]> git.sesse.net Git - ffmpeg/blobdiff - avconv.c
Merge remote-tracking branch 'qatar/master'
[ffmpeg] / avconv.c
index 6425c0f4562457fd3ce29d92bb27ab35af0c6c05..ec2c573d7bec852f742982ab4495f38e40033630 100644 (file)
--- a/avconv.c
+++ b/avconv.c
@@ -132,7 +132,6 @@ static int copy_tb= 0;
 static int opt_shortest = 0;
 static char *vstats_filename;
 static FILE *vstats_file;
-static int copy_initial_nonkeyframes = 0;
 
 static int audio_volume = 256;
 
@@ -240,9 +239,12 @@ typedef struct OutputStream {
     AVFilterGraph *graph;
 #endif
 
-   int64_t sws_flags;
-   AVDictionary *opts;
-   int is_past_recording_time;
+    int64_t sws_flags;
+    AVDictionary *opts;
+    int is_past_recording_time;
+    int stream_copy;
+    const char *attachment_filename;
+    int copy_initial_nonkeyframes;
 } OutputStream;
 
 #if HAVE_TERMIOS_H
@@ -294,6 +296,8 @@ typedef struct OptionsContext {
 
     SpecifierOpt *ts_scale;
     int        nb_ts_scale;
+    SpecifierOpt *dump_attachment;
+    int        nb_dump_attachment;
 
     /* output options */
     StreamMap *stream_maps;
@@ -304,6 +308,8 @@ typedef struct OptionsContext {
     int metadata_global_manual;
     int metadata_streams_manual;
     int metadata_chapters_manual;
+    const char **attachments;
+    int       nb_attachments;
 
     int chapters_input_file;
 
@@ -347,6 +353,10 @@ typedef struct OptionsContext {
     int        nb_inter_matrices;
     SpecifierOpt *top_field_first;
     int        nb_top_field_first;
+    SpecifierOpt *presets;
+    int        nb_presets;
+    SpecifierOpt *copy_initial_nonkeyframes;
+    int        nb_copy_initial_nonkeyframes;
 #if CONFIG_AVFILTER
     SpecifierOpt *filters;
     int        nb_filters;
@@ -394,7 +404,6 @@ static void reset_options(OptionsContext *o)
 
     memset(o, 0, sizeof(*o));
 
-    o->mux_preload    = 0.5;
     o->mux_max_delay  = 0.7;
     o->recording_time = INT64_MAX;
     o->limit_filesize = UINT64_MAX;
@@ -579,12 +588,14 @@ static int read_key(void)
     return -1;
 }
 
-static int decode_interrupt_cb(void)
+static int decode_interrupt_cb(void *ctx)
 {
     q_pressed += read_key() == 'q';
     return q_pressed > 1;
 }
 
+static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
+
 void exit_program(int ret)
 {
     int i;
@@ -621,6 +632,7 @@ void exit_program(int ret)
 #if CONFIG_AVFILTER
     avfilter_uninit();
 #endif
+    avformat_network_deinit();
 
     if (received_sigterm) {
         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
@@ -710,11 +722,11 @@ static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE};
             }
         }
-        for(; *p!=-1; p++){
+        for (; *p != PIX_FMT_NONE; p++) {
             if(*p == st->codec->pix_fmt)
                 break;
         }
-        if (*p == -1) {
+        if (*p == PIX_FMT_NONE) {
             if(st->codec->pix_fmt != PIX_FMT_NONE)
                 av_log(NULL, AV_LOG_WARNING,
                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
@@ -815,7 +827,7 @@ need_realloc:
 
     if ((ost->audio_resample && !ost->resample) || resample_changed) {
         if (resample_changed) {
-            av_log(NULL, AV_LOG_INFO, "Input stream #%d.%d frame changed from rate:%d fmt:%s ch:%d to rate:%d fmt:%s ch:%d\n",
+            av_log(NULL, AV_LOG_INFO, "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d to rate:%d fmt:%s ch:%d\n",
                    ist->file_index, ist->st->index,
                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
@@ -1130,7 +1142,7 @@ static void do_video_resample(OutputStream *ost,
 #if !CONFIG_AVFILTER
     if (resample_changed) {
         av_log(NULL, AV_LOG_INFO,
-               "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
+               "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
                ist->file_index, ist->st->index,
                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
@@ -1405,7 +1417,7 @@ static void print_report(OutputFile *output_files,
         float q = -1;
         ost = &ost_table[i];
         enc = ost->st->codec;
-        if (!ost->st->stream_copy && enc->coded_frame)
+        if (!ost->stream_copy && enc->coded_frame)
             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
@@ -1584,26 +1596,338 @@ static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
     }
 }
 
+/*
+ * Check whether a packet from ist should be written into ost at this time
+ */
+static int check_output_constraints(InputStream *ist, OutputStream *ost)
+{
+    OutputFile *of = &output_files[ost->file_index];
+    int ist_index  = ist - input_streams;
+
+    if (ost->source_index != ist_index)
+        return 0;
+
+    if (of->start_time && ist->pts < of->start_time)
+        return 0;
+
+    if (of->recording_time != INT64_MAX &&
+        av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
+                      (AVRational){1, 1000000}) >= 0) {
+        ost->is_past_recording_time = 1;
+        return 0;
+    }
+
+    return 1;
+}
+
+static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
+{
+    OutputFile *of = &output_files[ost->file_index];
+    int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
+    AVPicture pict;
+    AVPacket opkt;
+
+    av_init_packet(&opkt);
+
+    if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
+        !ost->copy_initial_nonkeyframes)
+        return;
+
+    /* force the input stream PTS */
+    if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
+        audio_size += pkt->size;
+    else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
+        video_size += pkt->size;
+        ost->sync_opts++;
+    }
+
+    opkt.stream_index = ost->index;
+    if (pkt->pts != AV_NOPTS_VALUE)
+        opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
+    else
+        opkt.pts = AV_NOPTS_VALUE;
+
+    if (pkt->dts == AV_NOPTS_VALUE)
+        opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
+    else
+        opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
+    opkt.dts -= ost_tb_start_time;
+
+    opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
+    opkt.flags    = pkt->flags;
+
+    //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
+    if(   ost->st->codec->codec_id != CODEC_ID_H264
+       && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
+       && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
+       ) {
+        if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
+            opkt.destruct = av_destruct_packet;
+    } else {
+        opkt.data = pkt->data;
+        opkt.size = pkt->size;
+    }
+    if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
+        /* store AVPicture in AVPacket, as expected by the output format */
+        avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
+        opkt.data = (uint8_t *)&pict;
+        opkt.size = sizeof(AVPicture);
+        opkt.flags |= AV_PKT_FLAG_KEY;
+    }
+
+    write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
+    ost->st->codec->frame_number++;
+    ost->frame_number++;
+    av_free_packet(&opkt);
+}
+
+static void rate_emu_sleep(InputStream *ist)
+{
+    if (input_files[ist->file_index].rate_emu) {
+        int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
+        int64_t now = av_gettime() - ist->start;
+        if (pts > now)
+            usleep(pts - now);
+    }
+}
+
+static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
+{
+    static unsigned int samples_size = 0;
+    int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
+    uint8_t *decoded_data_buf  = NULL;
+    int      decoded_data_size = 0;
+    int i, ret;
+
+    if (pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
+        av_free(samples);
+        samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
+        samples      = av_malloc(samples_size);
+    }
+    decoded_data_size = samples_size;
+
+    ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
+                                pkt);
+    if (ret < 0)
+        return ret;
+    pkt->data   += ret;
+    pkt->size   -= ret;
+    *got_output  = decoded_data_size > 0;
+
+    /* Some bug in mpeg audio decoder gives */
+    /* decoded_data_size < 0, it seems they are overflows */
+    if (!*got_output) {
+        /* no audio frame */
+        return 0;
+    }
+
+    decoded_data_buf = (uint8_t *)samples;
+    ist->next_pts   += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
+                       (ist->st->codec->sample_rate * ist->st->codec->channels);
+
+    // preprocess audio (volume)
+    if (audio_volume != 256) {
+        switch (ist->st->codec->sample_fmt) {
+        case AV_SAMPLE_FMT_U8:
+        {
+            uint8_t *volp = samples;
+            for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
+                int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
+                *volp++ = av_clip_uint8(v);
+            }
+            break;
+        }
+        case AV_SAMPLE_FMT_S16:
+        {
+            int16_t *volp = samples;
+            for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
+                int v = ((*volp) * audio_volume + 128) >> 8;
+                *volp++ = av_clip_int16(v);
+            }
+            break;
+        }
+        case AV_SAMPLE_FMT_S32:
+        {
+            int32_t *volp = samples;
+            for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
+                int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
+                *volp++ = av_clipl_int32(v);
+            }
+            break;
+        }
+        case AV_SAMPLE_FMT_FLT:
+        {
+            float *volp = samples;
+            float scale = audio_volume / 256.f;
+            for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
+                *volp++ *= scale;
+            }
+            break;
+        }
+        case AV_SAMPLE_FMT_DBL:
+        {
+            double *volp = samples;
+            double scale = audio_volume / 256.;
+            for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
+                *volp++ *= scale;
+            }
+            break;
+        }
+        default:
+            av_log(NULL, AV_LOG_FATAL,
+                   "Audio volume adjustment on sample format %s is not supported.\n",
+                   av_get_sample_fmt_name(ist->st->codec->sample_fmt));
+            exit_program(1);
+        }
+    }
+
+    rate_emu_sleep(ist);
+
+    for (i = 0; i < nb_output_streams; i++) {
+        OutputStream *ost = &output_streams[i];
+
+        if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
+            continue;
+        do_audio_out(output_files[ost->file_index].ctx, ost, ist,
+                     decoded_data_buf, decoded_data_size);
+    }
+    return 0;
+}
+
+static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
+{
+    AVFrame *decoded_frame, *filtered_frame = NULL;
+    void *buffer_to_free = NULL;
+    int i, ret = 0;
+    float quality;
+#if CONFIG_AVFILTER
+    int frame_available = 1;
+#endif
+
+    if (!(decoded_frame = avcodec_alloc_frame()))
+        return AVERROR(ENOMEM);
+    pkt->pts  = *pkt_pts;
+    pkt->dts  = ist->pts;
+    *pkt_pts  = AV_NOPTS_VALUE;
+
+    ret = avcodec_decode_video2(ist->st->codec,
+                                decoded_frame, got_output, pkt);
+    if (ret < 0)
+        goto fail;
+
+    quality = same_quant ? decoded_frame->quality : 0;
+    if (!*got_output) {
+        /* no picture yet */
+        av_freep(&decoded_frame);
+        return 0;
+    }
+    ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
+    if (ist->st->codec->time_base.num != 0) {
+        int ticks      = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
+                                           ist->st->codec->ticks_per_frame;
+        ist->next_pts += ((int64_t)AV_TIME_BASE *
+                          ist->st->codec->time_base.num * ticks) /
+                          ist->st->codec->time_base.den;
+    }
+    pkt->size = 0;
+    pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
+
+    rate_emu_sleep(ist);
+
+    for (i = 0; i < nb_output_streams; i++) {
+        OutputStream *ost = &output_streams[i];
+        int frame_size;
+
+        if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
+            continue;
+
+#if CONFIG_AVFILTER
+        if (ost->input_video_filter) {
+            if (!decoded_frame->sample_aspect_ratio.num)
+                decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
+            decoded_frame->pts = ist->pts;
+
+            av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
+            if (!(filtered_frame = avcodec_alloc_frame())) {
+                ret = AVERROR(ENOMEM);
+                goto fail;
+            }
+            frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
+        }
+        while (frame_available) {
+            if (ost->output_video_filter) {
+                AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
+                if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
+                    goto cont;
+                if (ost->picref) {
+                    avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
+                    ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
+                }
+            }
+            if (ost->picref->video && !ost->frame_aspect_ratio)
+                ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
+#else
+            filtered_frame = decoded_frame;
+#endif
+
+            do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
+                         same_quant ? quality : ost->st->codec->global_quality);
+            if (vstats_filename && frame_size)
+                do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
+#if CONFIG_AVFILTER
+            cont:
+            frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
+            if (ost->picref)
+                avfilter_unref_buffer(ost->picref);
+        }
+        av_freep(&filtered_frame);
+#endif
+    }
+
+fail:
+    av_free(buffer_to_free);
+    av_freep(&decoded_frame);
+    return ret;
+}
+
+static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
+{
+    AVSubtitle subtitle;
+    int i, ret = avcodec_decode_subtitle2(ist->st->codec,
+                                          &subtitle, got_output, pkt);
+    if (ret < 0)
+        return ret;
+    if (!*got_output)
+        return 0;
+
+    pkt->size = 0;
+
+    rate_emu_sleep(ist);
+
+    for (i = 0; i < nb_output_streams; i++) {
+        OutputStream *ost = &output_streams[i];
+
+        if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
+            continue;
+
+        do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
+    }
+
+    avsubtitle_free(&subtitle);
+    return 0;
+}
+
 /* pkt = NULL means EOF (needed to flush decoder buffers) */
 static int output_packet(InputStream *ist, int ist_index,
                          OutputStream *ost_table, int nb_ostreams,
                          const AVPacket *pkt)
 {
-    AVFormatContext *os;
     OutputStream *ost;
     int ret = 0, i;
     int got_output;
-    void *buffer_to_free = NULL;
-    static unsigned int samples_size= 0;
-    AVSubtitle subtitle, *subtitle_to_free;
     int64_t pkt_pts = AV_NOPTS_VALUE;
-#if CONFIG_AVFILTER
-    int frame_available;
-#endif
-    float quality;
 
     AVPacket avpkt;
-    int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
 
     if(ist->next_pts == AV_NOPTS_VALUE)
         ist->next_pts= ist->pts;
@@ -1624,10 +1948,7 @@ static int output_packet(InputStream *ist, int ist_index,
         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
 
     //while we have more to decode or while the decoder did output something on EOF
-    while (avpkt.size > 0 || (!pkt && got_output)) {
-        uint8_t *data_buf, *decoded_data_buf;
-        int data_size, decoded_data_size;
-        AVFrame *decoded_frame, *filtered_frame;
+    while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
     handle_eof:
         ist->pts= ist->next_pts;
 
@@ -1636,328 +1957,56 @@ static int output_packet(InputStream *ist, int ist_index,
                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
             ist->showed_multi_packet_warning=1;
 
-        /* decode the packet if needed */
-        decoded_frame    = filtered_frame = NULL;
-        decoded_data_buf = NULL; /* fail safe */
-        decoded_data_size= 0;
-        data_buf  = avpkt.data;
-        data_size = avpkt.size;
-        subtitle_to_free = NULL;
-        if (ist->decoding_needed) {
-            switch(ist->st->codec->codec_type) {
-            case AVMEDIA_TYPE_AUDIO:{
-                if(pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
-                    samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
-                    av_free(samples);
-                    samples= av_malloc(samples_size);
-                }
-                decoded_data_size= samples_size;
-                    /* XXX: could avoid copy if PCM 16 bits with same
-                       endianness as CPU */
-                ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
-                                            &avpkt);
-                if (ret < 0)
-                    return ret;
-                avpkt.data += ret;
-                avpkt.size -= ret;
-                data_size   = ret;
-                got_output  = decoded_data_size > 0;
-                /* Some bug in mpeg audio decoder gives */
-                /* decoded_data_size < 0, it seems they are overflows */
-                if (!got_output) {
-                    /* no audio frame */
-                    continue;
-                }
-                decoded_data_buf = (uint8_t *)samples;
-                ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
-                    (ist->st->codec->sample_rate * ist->st->codec->channels);
-                break;}
-            case AVMEDIA_TYPE_VIDEO:
-                    if (!(decoded_frame = avcodec_alloc_frame()))
-                        return AVERROR(ENOMEM);
-                    avpkt.pts = pkt_pts;
-                    avpkt.dts = ist->pts;
-                    pkt_pts = AV_NOPTS_VALUE;
-
-                    ret = avcodec_decode_video2(ist->st->codec,
-                                                decoded_frame, &got_output, &avpkt);
-                    quality = same_quant ? decoded_frame->quality : 0;
-                    if (ret < 0)
-                        goto fail;
-                    if (!got_output) {
-                        /* no picture yet */
-                        av_freep(&decoded_frame);
-                        goto discard_packet;
-                    }
-                    ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
-                    if (ist->st->codec->time_base.num != 0) {
-                        int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
-                        ist->next_pts += ((int64_t)AV_TIME_BASE *
-                                          ist->st->codec->time_base.num * ticks) /
-                            ist->st->codec->time_base.den;
-                    }
-                    avpkt.size = 0;
-                    buffer_to_free = NULL;
-                    pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
-                    break;
-            case AVMEDIA_TYPE_SUBTITLE:
-                ret = avcodec_decode_subtitle2(ist->st->codec,
-                                               &subtitle, &got_output, &avpkt);
-                if (ret < 0)
-                    return ret;
-                if (!got_output) {
-                    goto discard_packet;
-                }
-                subtitle_to_free = &subtitle;
-                avpkt.size = 0;
-                break;
-            default:
-                return -1;
-            }
-        } else {
-            switch(ist->st->codec->codec_type) {
-            case AVMEDIA_TYPE_AUDIO:
-                ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
-                    ist->st->codec->sample_rate;
-                break;
-            case AVMEDIA_TYPE_VIDEO:
-                if (ist->st->codec->time_base.num != 0) {
-                    int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
-                    ist->next_pts += ((int64_t)AV_TIME_BASE *
-                                      ist->st->codec->time_base.num * ticks) /
-                        ist->st->codec->time_base.den;
-                }
-                break;
-            }
-            avpkt.size = 0;
-        }
-
-        // preprocess audio (volume)
-        if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
-            if (audio_volume != 256) {
-                switch (ist->st->codec->sample_fmt) {
-                case AV_SAMPLE_FMT_U8:
-                {
-                    uint8_t *volp = samples;
-                    for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
-                        int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
-                        *volp++ = av_clip_uint8(v);
-                    }
-                    break;
-                }
-                case AV_SAMPLE_FMT_S16:
-                {
-                    int16_t *volp = samples;
-                    for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
-                        int v = ((*volp) * audio_volume + 128) >> 8;
-                        *volp++ = av_clip_int16(v);
-                    }
-                    break;
-                }
-                case AV_SAMPLE_FMT_S32:
-                {
-                    int32_t *volp = samples;
-                    for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
-                        int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
-                        *volp++ = av_clipl_int32(v);
-                    }
-                    break;
-                }
-                case AV_SAMPLE_FMT_FLT:
-                {
-                    float *volp = samples;
-                    float scale = audio_volume / 256.f;
-                    for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
-                        *volp++ *= scale;
-                    }
-                    break;
-                }
-                case AV_SAMPLE_FMT_DBL:
-                {
-                    double *volp = samples;
-                    double scale = audio_volume / 256.;
-                    for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
-                        *volp++ *= scale;
-                    }
-                    break;
-                }
-                default:
-                    av_log(NULL, AV_LOG_FATAL,
-                           "Audio volume adjustment on sample format %s is not supported.\n",
-                           av_get_sample_fmt_name(ist->st->codec->sample_fmt));
-                    exit_program(1);
-                }
-            }
+        switch(ist->st->codec->codec_type) {
+        case AVMEDIA_TYPE_AUDIO:
+            ret = transcode_audio    (ist, &avpkt, &got_output);
+            break;
+        case AVMEDIA_TYPE_VIDEO:
+            ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts);
+            break;
+        case AVMEDIA_TYPE_SUBTITLE:
+            ret = transcode_subtitles(ist, &avpkt, &got_output);
+            break;
+        default:
+            return -1;
         }
 
-        /* frame rate emulation */
-        if (input_files[ist->file_index].rate_emu) {
-            int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
-            int64_t now = av_gettime() - ist->start;
-            if (pts > now)
-                usleep(pts - now);
-        }
-        /* if output time reached then transcode raw format,
-           encode packets and output them */
-        for (i = 0; i < nb_ostreams; i++) {
-            OutputFile *of = &output_files[ost_table[i].file_index];
-            int frame_size;
-
-            ost = &ost_table[i];
-            if (ost->source_index != ist_index)
-                continue;
-
-            if (of->start_time && ist->pts < of->start_time)
-                continue;
-
-            if (of->recording_time != INT64_MAX &&
-                av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
-                              (AVRational){1, 1000000}) >= 0) {
-                ost->is_past_recording_time = 1;
+        if (ret < 0)
+            return ret;
+        if (!got_output) {
+            if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
                 continue;
-            }
+            goto discard_packet;
+        }
+    }
+ discard_packet:
 
-#if CONFIG_AVFILTER
-            if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
-                ost->input_video_filter) {
-                if (!decoded_frame->sample_aspect_ratio.num)
-                    decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
-                decoded_frame->pts = ist->pts;
-
-                av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
-                if (!(filtered_frame = avcodec_alloc_frame())) {
-                    ret = AVERROR(ENOMEM);
-                    goto fail;
-                }
+    /* handle stream copy */
+    if (!ist->decoding_needed) {
+        rate_emu_sleep(ist);
+        switch (ist->st->codec->codec_type) {
+        case AVMEDIA_TYPE_AUDIO:
+            ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
+                             ist->st->codec->sample_rate;
+            break;
+        case AVMEDIA_TYPE_VIDEO:
+            if (ist->st->codec->time_base.num != 0) {
+                int ticks = ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
+                ist->next_pts += ((int64_t)AV_TIME_BASE *
+                                  ist->st->codec->time_base.num * ticks) /
+                                  ist->st->codec->time_base.den;
             }
-            frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
-                !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
-            while (frame_available) {
-                if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
-                    AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
-                    if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
-                        goto cont;
-                    if (ost->picref) {
-                        avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
-                        ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
-                    }
-                }
-#else
-                filtered_frame = decoded_frame;
-#endif
-                os = output_files[ost->file_index].ctx;
-
-                /* set the input output pts pairs */
-                //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
-
-                if (ost->encoding_needed) {
-                    av_assert0(ist->decoding_needed);
-                    switch(ost->st->codec->codec_type) {
-                    case AVMEDIA_TYPE_AUDIO:
-                        do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
-                        break;
-                    case AVMEDIA_TYPE_VIDEO:
-#if CONFIG_AVFILTER
-                        if (ost->picref->video && !ost->frame_aspect_ratio)
-                            ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
-#endif
-                        do_video_out(os, ost, ist, filtered_frame, &frame_size,
-                                     same_quant ? quality : ost->st->codec->global_quality);
-                        if (vstats_filename && frame_size)
-                            do_video_stats(os, ost, frame_size);
-                        break;
-                    case AVMEDIA_TYPE_SUBTITLE:
-                        do_subtitle_out(os, ost, ist, &subtitle,
-                                        pkt->pts);
-                        break;
-                    default:
-                        abort();
-                    }
-                } else {
-                    AVPicture pict;
-                    AVPacket opkt;
-                    int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
-                    av_init_packet(&opkt);
-
-                    if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
-#if !CONFIG_AVFILTER
-                        continue;
-#else
-                        goto cont;
-#endif
-
-                    /* no reencoding needed : output the packet directly */
-                    /* force the input stream PTS */
-
-                    if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
-                        audio_size += data_size;
-                    else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
-                        video_size += data_size;
-                        ost->sync_opts++;
-                    }
-
-                    opkt.stream_index= ost->index;
-                    if(pkt->pts != AV_NOPTS_VALUE)
-                        opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
-                    else
-                        opkt.pts= AV_NOPTS_VALUE;
-
-                    if (pkt->dts == AV_NOPTS_VALUE)
-                        opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
-                    else
-                        opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
-                    opkt.dts -= ost_tb_start_time;
-
-                    opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
-                    opkt.flags= pkt->flags;
-
-                    //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
-                    if(   ost->st->codec->codec_id != CODEC_ID_H264
-                       && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
-                       && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
-                       ) {
-                        if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
-                            opkt.destruct= av_destruct_packet;
-                    } else {
-                        opkt.data = data_buf;
-                        opkt.size = data_size;
-                    }
+            break;
+        }
+    }
+    for (i = 0; pkt && i < nb_ostreams; i++) {
+        ost = &ost_table[i];
 
-                    if (os->oformat->flags & AVFMT_RAWPICTURE) {
-                        /* store AVPicture in AVPacket, as expected by the output format */
-                        avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
-                        opkt.data = (uint8_t *)&pict;
-                        opkt.size = sizeof(AVPicture);
-                        opkt.flags |= AV_PKT_FLAG_KEY;
-                    }
-                    write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
-                    ost->st->codec->frame_number++;
-                    ost->frame_number++;
-                    av_free_packet(&opkt);
-                }
-#if CONFIG_AVFILTER
-                cont:
-                frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
-                                   ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
-                if (ost->picref)
-                    avfilter_unref_buffer(ost->picref);
-            }
-            av_freep(&filtered_frame);
-#endif
-            }
+        if (!check_output_constraints(ist, ost) || ost->encoding_needed)
+            continue;
 
-fail:
-        av_free(buffer_to_free);
-        /* XXX: allocate the subtitles in the codec ? */
-        if (subtitle_to_free) {
-            avsubtitle_free(subtitle_to_free);
-            subtitle_to_free = NULL;
-        }
-        av_freep(&decoded_frame);
-        if (ret < 0)
-            return ret;
+        do_streamcopy(ist, ost, pkt);
     }
- discard_packet:
 
     return 0;
 }
@@ -1987,13 +2036,13 @@ static int init_input_stream(int ist_index, OutputStream *output_streams, int nb
     if (ist->decoding_needed) {
         AVCodec *codec = ist->dec;
         if (!codec) {
-            snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d.%d",
+            snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
             return AVERROR(EINVAL);
         }
 
         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
-            snprintf(error, error_len, "Error while opening decoder for input stream #%d.%d",
+            snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
                     ist->file_index, ist->st->index);
             return AVERROR(EINVAL);
         }
@@ -2014,7 +2063,7 @@ static int transcode_init(OutputFile *output_files,
                           int nb_input_files)
 {
     int ret = 0, i, j, k;
-    AVFormatContext *os;
+    AVFormatContext *oc;
     AVCodecContext *codec, *icodec;
     OutputStream *ost;
     InputStream *ist;
@@ -2030,10 +2079,10 @@ static int transcode_init(OutputFile *output_files,
     }
 
     /* output stream init */
-    for(i=0;i<nb_output_files;i++) {
-        os = output_files[i].ctx;
-        if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
-            av_dump_format(os, i, os->filename, 1);
+    for (i = 0; i < nb_output_files; i++) {
+        oc = output_files[i].ctx;
+        if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
+            av_dump_format(oc, i, oc->filename, 1);
             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
             return AVERROR(EINVAL);
         }
@@ -2042,17 +2091,20 @@ static int transcode_init(OutputFile *output_files,
     /* for each output stream, we compute the right encoding parameters */
     for (i = 0; i < nb_output_streams; i++) {
         ost = &output_streams[i];
-        os = output_files[ost->file_index].ctx;
+        o = output_files[ost->file_index].ctx;
         ist = &input_streams[ost->source_index];
 
-        codec = ost->st->codec;
+        if (ost->attachment_filename)
+            continue;
+
+        codec  = ost->st->codec;
         icodec = ist->st->codec;
 
-        ost->st->disposition = ist->st->disposition;
-        codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
+        ost->st->disposition          = ist->st->disposition;
+        codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
         codec->chroma_sample_location = icodec->chroma_sample_location;
 
-        if (ost->st->stream_copy) {
+        if (ost->stream_copy) {
             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
 
             if (extra_size > INT_MAX) {
@@ -2060,20 +2112,20 @@ static int transcode_init(OutputFile *output_files,
             }
 
             /* if stream_copy is selected, no need to decode or encode */
-            codec->codec_id = icodec->codec_id;
+            codec->codec_id   = icodec->codec_id;
             codec->codec_type = icodec->codec_type;
 
-            if(!codec->codec_tag){
-                if(   !os->oformat->codec_tag
-                   || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
-                   || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
+            if (!codec->codec_tag) {
+                if (!oc->oformat->codec_tag ||
+                     av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
+                     av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
                     codec->codec_tag = icodec->codec_tag;
             }
 
-            codec->bit_rate = icodec->bit_rate;
+            codec->bit_rate       = icodec->bit_rate;
             codec->rc_max_rate    = icodec->rc_max_rate;
             codec->rc_buffer_size = icodec->rc_buffer_size;
-            codec->extradata= av_mallocz(extra_size);
+            codec->extradata      = av_mallocz(extra_size);
             if (!codec->extradata) {
                 return AVERROR(ENOMEM);
             }
@@ -2081,13 +2133,15 @@ static int transcode_init(OutputFile *output_files,
             codec->extradata_size= icodec->extradata_size;
 
             codec->time_base = ist->st->time_base;
-            if(!strcmp(os->oformat->name, "avi")) {
-                if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
+            if(!strcmp(oc->oformat->name, "avi")) {
+                if (!copy_tb &&
+                    av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) &&
+                    av_q2d(ist->st->time_base) < 1.0/500){
                     codec->time_base = icodec->time_base;
                     codec->time_base.num *= icodec->ticks_per_frame;
                     codec->time_base.den *= 2;
                 }
-            } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
+            } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)) {
                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
                     codec->time_base = icodec->time_base;
                     codec->time_base.num *= icodec->ticks_per_frame;
@@ -2102,24 +2156,20 @@ static int transcode_init(OutputFile *output_files,
                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
                     exit_program(1);
                 }
-                codec->channel_layout = icodec->channel_layout;
-                codec->sample_rate = icodec->sample_rate;
-                codec->channels = icodec->channels;
-                codec->frame_size = icodec->frame_size;
+                codec->channel_layout     = icodec->channel_layout;
+                codec->sample_rate        = icodec->sample_rate;
+                codec->channels           = icodec->channels;
+                codec->frame_size         = icodec->frame_size;
                 codec->audio_service_type = icodec->audio_service_type;
-                codec->block_align= icodec->block_align;
-                if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
-                    codec->block_align= 0;
-                if(codec->codec_id == CODEC_ID_AC3)
-                    codec->block_align= 0;
+                codec->block_align        = icodec->block_align;
                 break;
             case AVMEDIA_TYPE_VIDEO:
-                codec->pix_fmt = icodec->pix_fmt;
-                codec->width = icodec->width;
-                codec->height = icodec->height;
-                codec->has_b_frames = icodec->has_b_frames;
+                codec->pix_fmt            = icodec->pix_fmt;
+                codec->width              = icodec->width;
+                codec->height             = icodec->height;
+                codec->has_b_frames       = icodec->has_b_frames;
                 if (!codec->sample_aspect_ratio.num) {
-                    codec->sample_aspect_ratio =
+                    codec->sample_aspect_ratio   =
                     ost->st->sample_aspect_ratio =
                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
                         ist->st->codec->sample_aspect_ratio.num ?
@@ -2127,7 +2177,7 @@ static int transcode_init(OutputFile *output_files,
                 }
                 break;
             case AVMEDIA_TYPE_SUBTITLE:
-                codec->width = icodec->width;
+                codec->width  = icodec->width;
                 codec->height = icodec->height;
                 break;
             case AVMEDIA_TYPE_DATA:
@@ -2139,31 +2189,36 @@ static int transcode_init(OutputFile *output_files,
         } else {
             if (!ost->enc)
                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
+
             ist->decoding_needed = 1;
             ost->encoding_needed = 1;
+
             switch(codec->codec_type) {
             case AVMEDIA_TYPE_AUDIO:
-                ost->fifo= av_fifo_alloc(1024);
+                ost->fifo = av_fifo_alloc(1024);
                 if (!ost->fifo) {
                     return AVERROR(ENOMEM);
                 }
                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
-                if (!codec->sample_rate) {
+
+                if (!codec->sample_rate)
                     codec->sample_rate = icodec->sample_rate;
-                }
                 choose_sample_rate(ost->st, ost->enc);
                 codec->time_base = (AVRational){1, codec->sample_rate};
+
                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
                     codec->sample_fmt = icodec->sample_fmt;
                 choose_sample_fmt(ost->st, ost->enc);
+
                 if (!codec->channels) {
                     codec->channels = icodec->channels;
                     codec->channel_layout = icodec->channel_layout;
                 }
                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
                     codec->channel_layout = 0;
-                ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
-                icodec->request_channels = codec->channels;
+
+                ost->audio_resample       = codec-> sample_rate != icodec->sample_rate || audio_sync_method > 1;
+                icodec->request_channels  = codec-> channels;
                 ost->resample_sample_fmt  = icodec->sample_fmt;
                 ost->resample_sample_rate = icodec->sample_rate;
                 ost->resample_channels    = icodec->channels;
@@ -2190,9 +2245,9 @@ static int transcode_init(OutputFile *output_files,
                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
                 }
 
-                ost->resample_height = icodec->height;
-                ost->resample_width  = icodec->width;
-                ost->resample_pix_fmt= icodec->pix_fmt;
+                ost->resample_height  = icodec->height;
+                ost->resample_width   = icodec->width;
+                ost->resample_pix_fmt = icodec->pix_fmt;
 
                 if (!ost->frame_rate.num)
                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
@@ -2202,8 +2257,8 @@ static int transcode_init(OutputFile *output_files,
                 }
                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
-                   && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
-                    av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
+                   && (video_sync_method==1 || (video_sync_method<0 && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
+                    av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
                 }
 
@@ -2240,7 +2295,7 @@ static int transcode_init(OutputFile *output_files,
                 } else {
                     char  *logbuffer;
                     size_t logbuffer_size;
-                    if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
+                    if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
                                logfilename);
                         exit_program(1);
@@ -2251,8 +2306,8 @@ static int transcode_init(OutputFile *output_files,
         }
         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size */
-            int size= codec->width * codec->height;
-            bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 1664);
+            int        size = codec->width * codec->height;
+            bit_buffer_size = FFMAX(bit_buffer_size, 6*size + 1664);
         }
     }
 
@@ -2268,10 +2323,10 @@ static int transcode_init(OutputFile *output_files,
     for (i = 0; i < nb_output_streams; i++) {
         ost = &output_streams[i];
         if (ost->encoding_needed) {
-            AVCodec *codec = ost->enc;
+            AVCodec      *codec = ost->enc;
             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
             if (!codec) {
-                snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
+                snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
                          ost->st->codec->codec_id, ost->file_index, ost->index);
                 ret = AVERROR(EINVAL);
                 goto dump_format;
@@ -2286,7 +2341,7 @@ static int transcode_init(OutputFile *output_files,
                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
             }
             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
-                snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
+                snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
                         ost->file_index, ost->index);
                 ret = AVERROR(EINVAL);
                 goto dump_format;
@@ -2326,14 +2381,15 @@ static int transcode_init(OutputFile *output_files,
 
     /* open files and write file headers */
     for (i = 0; i < nb_output_files; i++) {
-        os = output_files[i].ctx;
-        if (avformat_write_header(os, &output_files[i].opts) < 0) {
+        oc = output_files[i].ctx;
+        oc->interrupt_callback = int_cb;
+        if (avformat_write_header(oc, &output_files[i].opts) < 0) {
             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
             ret = AVERROR(EINVAL);
             goto dump_format;
         }
 //        assert_avoptions(output_files[i].opts);
-        if (strcmp(os->oformat->name, "rtp")) {
+        if (strcmp(oc->oformat->name, "rtp")) {
             want_sdp = 0;
         }
     }
@@ -2341,7 +2397,7 @@ static int transcode_init(OutputFile *output_files,
  dump_format:
     /* dump the file output parameters - cannot be done before in case
        of stream copy */
-    for(i=0;i<nb_output_files;i++) {
+    for (i = 0; i < nb_output_files; i++) {
         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
     }
 
@@ -2349,16 +2405,23 @@ static int transcode_init(OutputFile *output_files,
     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
     for (i = 0; i < nb_output_streams; i++) {
         ost = &output_streams[i];
-        av_log(NULL, AV_LOG_INFO, "  Stream #%d.%d -> #%d.%d",
+
+        if (ost->attachment_filename) {
+            /* an attached file */
+            av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
+                   ost->attachment_filename, ost->file_index, ost->index);
+            continue;
+        }
+        av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
                input_streams[ost->source_index].file_index,
                input_streams[ost->source_index].st->index,
                ost->file_index,
                ost->index);
         if (ost->sync_ist != &input_streams[ost->source_index])
-            av_log(NULL, AV_LOG_INFO, " [sync #%d.%d]",
+            av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
                    ost->sync_ist->file_index,
                    ost->sync_ist->st->index);
-        if (ost->st->stream_copy)
+        if (ost->stream_copy)
             av_log(NULL, AV_LOG_INFO, " (copy)");
         else
             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
@@ -2575,7 +2638,7 @@ static int transcode(OutputFile *output_files,
         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
 
-            av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d.%d\n",
+            av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
                    ist->file_index, ist->st->index);
             if (exit_on_error)
                 exit_program(1);
@@ -2641,7 +2704,7 @@ static int transcode(OutputFile *output_files,
         for (i = 0; i < nb_output_streams; i++) {
             ost = &output_streams[i];
             if (ost) {
-                if (ost->st->stream_copy)
+                if (ost->stream_copy)
                     av_freep(&ost->st->codec->extradata);
                 if (ost->logfile) {
                     fclose(ost->logfile);
@@ -2756,7 +2819,8 @@ static int opt_map(OptionsContext *o, const char *opt, const char *arg)
         /* disable some already defined maps */
         for (i = 0; i < o->nb_stream_maps; i++) {
             m = &o->stream_maps[i];
-            if (check_stream_specifier(input_files[m->file_index].ctx,
+            if (file_idx == m->file_index &&
+                check_stream_specifier(input_files[m->file_index].ctx,
                                        input_files[m->file_index].ctx->streams[m->stream_index],
                                        *p == ':' ? p + 1 : p) > 0)
                 m->disabled = 1;
@@ -2791,6 +2855,14 @@ static int opt_map(OptionsContext *o, const char *opt, const char *arg)
     return 0;
 }
 
+static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
+{
+    o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
+                                &o->nb_attachments, o->nb_attachments + 1);
+    o->attachments[o->nb_attachments - 1] = arg;
+    return 0;
+}
+
 static void parse_meta_type(char *arg, char *type, int *index)
 {
     if (*arg) {
@@ -2840,13 +2912,11 @@ static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
     return 0;
 }
 
-static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
+static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
 {
     const char *codec_string = encoder ? "encoder" : "decoder";
     AVCodec *codec;
 
-    if(!name)
-        return CODEC_ID_NONE;
     codec = encoder ?
         avcodec_find_encoder_by_name(name) :
         avcodec_find_decoder_by_name(name);
@@ -2858,29 +2928,20 @@ static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, i
         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
         exit_program(1);
     }
-    return codec->id;
+    return codec;
 }
 
-static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
+static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
 {
     char *codec_name = NULL;
 
     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
-
-    if (!codec_name) {
-        if (s->oformat) {
-            st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
-            return avcodec_find_encoder(st->codec->codec_id);
-        }
-    } else if (!strcmp(codec_name, "copy"))
-        st->stream_copy = 1;
-    else {
-        st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
-        return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
-                            avcodec_find_decoder_by_name(codec_name);
-    }
-
-    return NULL;
+    if (codec_name) {
+        AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
+        st->codec->codec_id = codec->id;
+        return codec;
+    } else
+        return avcodec_find_decoder(st->codec->codec_id);
 }
 
 /**
@@ -2895,7 +2956,6 @@ static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
         AVStream *st = ic->streams[i];
         AVCodecContext *dec = st->codec;
         InputStream *ist;
-        double scale = 1.0;
 
         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
         ist = &input_streams[nb_input_streams - 1];
@@ -2904,12 +2964,10 @@ static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
         ist->discard = 1;
         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
 
-        MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
-        ist->ts_scale = scale;
+        ist->ts_scale = 1.0;
+        MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
 
-        ist->dec = choose_codec(o, ic, st, dec->codec_type);
-        if (!ist->dec)
-            ist->dec = avcodec_find_decoder(dec->codec_id);
+        ist->dec = choose_decoder(o, ic, st);
 
         switch (dec->codec_type) {
         case AVMEDIA_TYPE_AUDIO:
@@ -2956,6 +3014,60 @@ static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
     }
 }
 
+static void assert_file_overwrite(const char *filename)
+{
+    if (!file_overwrite &&
+        (strchr(filename, ':') == NULL || filename[1] == ':' ||
+         av_strstart(filename, "file:", NULL))) {
+        if (avio_check(filename, 0) == 0) {
+            if (!using_stdin) {
+                fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
+                fflush(stderr);
+                if (!read_yesno()) {
+                    fprintf(stderr, "Not overwriting - exiting\n");
+                    exit_program(1);
+                }
+            }
+            else {
+                fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
+                exit_program(1);
+            }
+        }
+    }
+}
+
+static void dump_attachment(AVStream *st, const char *filename)
+{
+    int ret;
+    AVIOContext *out = NULL;
+    AVDictionaryEntry *e;
+
+    if (!st->codec->extradata_size) {
+        av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
+               nb_input_files - 1, st->index);
+        return;
+    }
+    if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
+        filename = e->value;
+    if (!*filename) {
+        av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
+               "in stream #%d:%d.\n", nb_input_files - 1, st->index);
+        exit_program(1);
+    }
+
+    assert_file_overwrite(filename);
+
+    if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
+        av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
+               filename);
+        exit_program(1);
+    }
+
+    avio_write(out, st->codec->extradata, st->codec->extradata_size);
+    avio_flush(out);
+    avio_close(out);
+}
+
 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
 {
     AVFormatContext *ic;
@@ -3003,6 +3115,7 @@ static int opt_input_file(OptionsContext *o, const char *opt, const char *filena
         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
 
     ic->flags |= AVFMT_FLAG_NONBLOCK;
+    ic->interrupt_callback = int_cb;
 
     /* open the input file with generic libav function */
     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
@@ -3014,7 +3127,7 @@ static int opt_input_file(OptionsContext *o, const char *opt, const char *filena
 
     /* apply forced codec ids */
     for (i = 0; i < ic->nb_streams; i++)
-        choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
+        choose_decoder(o, ic, ic->streams[i]);
 
     /* Set AVCodecContext options for avformat_find_stream_info */
     opts = setup_find_stream_info_opts(ic, codec_opts);
@@ -3056,6 +3169,17 @@ static int opt_input_file(OptionsContext *o, const char *opt, const char *filena
     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
 
+    for (i = 0; i < o->nb_dump_attachment; i++) {
+        int j;
+
+        for (j = 0; j < ic->nb_streams; j++) {
+            AVStream *st = ic->streams[j];
+
+            if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
+                dump_attachment(st, o->dump_attachment[i].u.str);
+        }
+    }
+
     for (i = 0; i < orig_nb_streams; i++)
         av_dict_free(&opts[i]);
     av_freep(&opts);
@@ -3087,21 +3211,87 @@ static void parse_forced_key_frames(char *kf, OutputStream *ost,
     }
 }
 
+static uint8_t *get_line(AVIOContext *s)
+{
+    AVIOContext *line;
+    uint8_t *buf;
+    char c;
+
+    if (avio_open_dyn_buf(&line) < 0) {
+        av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
+        exit_program(1);
+    }
+
+    while ((c = avio_r8(s)) && c != '\n')
+        avio_w8(line, c);
+    avio_w8(line, 0);
+    avio_close_dyn_buf(line, &buf);
+
+    return buf;
+}
+
+static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
+{
+    int i, ret = 1;
+    char filename[1000];
+    const char *base[3] = { getenv("AVCONV_DATADIR"),
+                            getenv("HOME"),
+                            AVCONV_DATADIR,
+                            };
+
+    for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
+        if (!base[i])
+            continue;
+        if (codec_name) {
+            snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
+                     i != 1 ? "" : "/.avconv", codec_name, preset_name);
+            ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
+        }
+        if (ret) {
+            snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
+                     i != 1 ? "" : "/.avconv", preset_name);
+            ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
+        }
+    }
+    return ret;
+}
+
+static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
+{
+    char *codec_name = NULL;
+
+    MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
+    if (!codec_name) {
+        ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
+                                                  NULL, ost->st->codec->codec_type);
+        ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
+    } else if (!strcmp(codec_name, "copy"))
+        ost->stream_copy = 1;
+    else {
+        ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
+        ost->st->codec->codec_id = ost->enc->id;
+    }
+}
+
 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
 {
     OutputStream *ost;
-    AVStream *st = av_new_stream(oc, oc->nb_streams < o->nb_streamid_map ? o->streamid_map[oc->nb_streams] : 0);
-    int idx      = oc->nb_streams - 1;
-    int64_t max_frames = INT64_MAX;
+    AVStream *st = avformat_new_stream(oc, NULL);
+    int idx      = oc->nb_streams - 1, ret = 0;
     char *bsf = NULL, *next, *codec_tag = NULL;
     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
     double qscale = -1;
+    char *buf = NULL, *arg = NULL, *preset = NULL;
+    AVIOContext *s = NULL;
 
     if (!st) {
         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
         exit_program(1);
     }
 
+    if (oc->nb_streams - 1 < o->nb_streamid_map)
+        st->id = o->streamid_map[oc->nb_streams - 1];
+
     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
                                 nb_output_streams + 1);
     ost = &output_streams[nb_output_streams - 1];
@@ -3109,7 +3299,7 @@ static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, e
     ost->index = idx;
     ost->st    = st;
     st->codec->codec_type = type;
-    ost->enc = choose_codec(o, oc, st, type);
+    choose_encoder(o, oc, ost);
     if (ost->enc) {
         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
     }
@@ -3117,8 +3307,33 @@ static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, e
     avcodec_get_context_defaults3(st->codec, ost->enc);
     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
 
-    MATCH_PER_STREAM_OPT(max_frames, i64, max_frames, oc, st);
-    ost->max_frames = max_frames;
+    MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
+    if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
+        do  {
+            buf = get_line(s);
+            if (!buf[0] || buf[0] == '#') {
+                av_free(buf);
+                continue;
+            }
+            if (!(arg = strchr(buf, '='))) {
+                av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
+                exit_program(1);
+            }
+            *arg++ = 0;
+            av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
+            av_free(buf);
+        } while (!s->eof_reached);
+        avio_close(s);
+    }
+    if (ret) {
+        av_log(NULL, AV_LOG_FATAL,
+               "Preset %s specified for stream %d:%d, but could not be opened.\n",
+               preset, ost->file_index, ost->index);
+        exit_program(1);
+    }
+
+    ost->max_frames = INT64_MAX;
+    MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
 
     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
     while (bsf) {
@@ -3185,12 +3400,12 @@ static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
     st  = ost->st;
     video_enc = st->codec;
 
-    if (!st->stream_copy) {
+    if (!ost->stream_copy) {
         const char *p = NULL;
         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
-        int i, force_fps = 0, top_field_first = -1;
+        int i;
 
         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
@@ -3274,11 +3489,12 @@ static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
         if (forced_key_frames)
             parse_forced_key_frames(forced_key_frames, ost, video_enc);
 
-        MATCH_PER_STREAM_OPT(force_fps, i, force_fps, oc, st);
-        ost->force_fps = force_fps;
+        MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
 
-        MATCH_PER_STREAM_OPT(top_field_first, i, top_field_first, oc, st);
-        ost->top_field_first = top_field_first;
+        ost->top_field_first = -1;
+        MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
+
+        MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
 
 #if CONFIG_AVFILTER
         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
@@ -3302,7 +3518,7 @@ static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
     audio_enc = st->codec;
     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
 
-    if (!st->stream_copy) {
+    if (!ost->stream_copy) {
         char *sample_fmt = NULL;
 
         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
@@ -3322,12 +3538,10 @@ static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
 
 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
 {
-    AVStream *st;
     OutputStream *ost;
 
     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
-    st  = ost->st;
-    if (!st->stream_copy) {
+    if (!ost->stream_copy) {
         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
         exit_program(1);
     }
@@ -3338,7 +3552,7 @@ static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
 {
     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
-    ost->st->stream_copy = 1;
+    ost->stream_copy = 1;
     return ost;
 }
 
@@ -3422,8 +3636,9 @@ static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
 static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
 {
     int i, err;
-    AVFormatContext *ic = NULL;
+    AVFormatContext *ic = avformat_alloc_context();
 
+    ic->interrupt_callback = int_cb;
     err = avformat_open_input(&ic, filename, NULL, NULL);
     if (err < 0)
         return err;
@@ -3443,9 +3658,9 @@ static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const ch
         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
         avcodec_copy_context(st->codec, ic->streams[i]->codec);
 
-        if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
+        if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !ost->stream_copy)
             choose_sample_fmt(st, codec);
-        else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
+        else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !ost->stream_copy)
             choose_pixel_fmt(st, codec);
     }
 
@@ -3472,6 +3687,7 @@ static void opt_output_file(void *optctx, const char *filename)
     }
 
     file_oformat= oc->oformat;
+    oc->interrupt_callback = int_cb;
 
     if (!strcmp(file_oformat->name, "ffm") &&
         av_strstart(filename, "http:", NULL)) {
@@ -3544,7 +3760,7 @@ static void opt_output_file(void *optctx, const char *filename)
             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
             case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break;
             default:
-                av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d.%d - unsupported type.\n",
+                av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d:%d - unsupported type.\n",
                        map->file_index, map->stream_index);
                 exit_program(1);
             }
@@ -3556,6 +3772,42 @@ static void opt_output_file(void *optctx, const char *filename)
         }
     }
 
+    /* handle attached files */
+    for (i = 0; i < o->nb_attachments; i++) {
+        AVIOContext *pb;
+        uint8_t *attachment;
+        const char *p;
+        int64_t len;
+
+        if ((err = avio_open2(&pb, o->attachments[i], AVIO_FLAG_READ, &int_cb, NULL)) < 0) {
+            av_log(NULL, AV_LOG_FATAL, "Could not open attachment file %s.\n",
+                   o->attachments[i]);
+            exit_program(1);
+        }
+        if ((len = avio_size(pb)) <= 0) {
+            av_log(NULL, AV_LOG_FATAL, "Could not get size of the attachment %s.\n",
+                   o->attachments[i]);
+            exit_program(1);
+        }
+        if (!(attachment = av_malloc(len))) {
+            av_log(NULL, AV_LOG_FATAL, "Attachment %s too large to fit into memory.\n",
+                   o->attachments[i]);
+            exit_program(1);
+        }
+        avio_read(pb, attachment, len);
+
+        ost = new_attachment_stream(o, oc);
+        ost->stream_copy               = 0;
+        ost->source_index              = -1;
+        ost->attachment_filename       = o->attachments[i];
+        ost->st->codec->extradata      = attachment;
+        ost->st->codec->extradata_size = len;
+
+        p = strrchr(o->attachments[i], '/');
+        av_dict_set(&ost->st->metadata, "filename", (p && *p) ? p + 1 : o->attachments[i], AV_DICT_DONT_OVERWRITE);
+        avio_close(pb);
+    }
+
     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
     output_files[nb_output_files - 1].ctx       = oc;
     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
@@ -3574,34 +3826,22 @@ static void opt_output_file(void *optctx, const char *filename)
 
     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
         /* test if it already exists to avoid loosing precious files */
-        if (!file_overwrite &&
-            (strchr(filename, ':') == NULL ||
-             filename[1] == ':' ||
-             av_strstart(filename, "file:", NULL))) {
-            if (avio_check(filename, 0) == 0) {
-                if (!using_stdin) {
-                    fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
-                    fflush(stderr);
-                    if (!read_yesno()) {
-                        fprintf(stderr, "Not overwriting - exiting\n");
-                        exit_program(1);
-                    }
-                }
-                else {
-                    fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
-                    exit_program(1);
-                }
-            }
-        }
+        assert_file_overwrite(filename);
 
         /* open the file */
-        if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
+        if ((err = avio_open2(&oc->pb, filename, AVIO_FLAG_WRITE,
+                              &oc->interrupt_callback,
+                              &output_files[nb_output_files - 1].opts)) < 0) {
             print_error(filename, err);
             exit_program(1);
         }
     }
 
-    oc->preload   = (int)(o->mux_preload   * AV_TIME_BASE);
+    if (o->mux_preload) {
+        uint8_t buf[64];
+        snprintf(buf, sizeof(buf), "%d", (int)(o->mux_preload*AV_TIME_BASE));
+        av_dict_set(&output_files[nb_output_files - 1].opts, "preload", buf, 0);
+    }
     oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
 
     /* copy chapters */
@@ -3676,7 +3916,10 @@ static void opt_output_file(void *optctx, const char *filename)
                      AV_DICT_DONT_OVERWRITE);
     if (!o->metadata_streams_manual)
         for (i = output_files[nb_output_files - 1].ost_index; i < nb_output_streams; i++) {
-            InputStream *ist = &input_streams[output_streams[i].source_index];
+            InputStream *ist;
+            if (output_streams[i].source_index < 0)         /* this is true e.g. for attached files */
+                continue;
+            ist = &input_streams[output_streams[i].source_index];
             av_dict_copy(&output_streams[i].st->metadata, ist->st->metadata, AV_DICT_DONT_OVERWRITE);
         }
 
@@ -4027,6 +4270,7 @@ static const OptionDef options[] = {
     { "y", OPT_BOOL, {(void*)&file_overwrite}, "overwrite output files" },
     { "c", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(codec_names)}, "codec name", "codec" },
     { "codec", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(codec_names)}, "codec name", "codec" },
+    { "pre", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(presets)}, "preset name", "preset" },
     { "map", HAS_ARG | OPT_EXPERT | OPT_FUNC2, {(void*)opt_map}, "set input stream mapping", "file.stream[:syncfile.syncstream]" },
     { "map_metadata", HAS_ARG | OPT_EXPERT | OPT_FUNC2, {(void*)opt_map_metadata}, "set metadata information of outfile from infile",
       "outfile[,metadata]:infile[,metadata]" },
@@ -4055,7 +4299,7 @@ static const OptionDef options[] = {
     { "shortest", OPT_BOOL | OPT_EXPERT, {(void*)&opt_shortest}, "finish encoding within shortest input" }, //
     { "dts_delta_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT, {(void*)&dts_delta_threshold}, "timestamp discontinuity delta threshold", "threshold" },
     { "xerror", OPT_BOOL, {(void*)&exit_on_error}, "exit on error", "error" },
-    { "copyinkf", OPT_BOOL | OPT_EXPERT, {(void*)&copy_initial_nonkeyframes}, "copy initial non-keyframes" },
+    { "copyinkf", OPT_BOOL | OPT_EXPERT | OPT_SPEC, {.off = OFFSET(copy_initial_nonkeyframes)}, "copy initial non-keyframes" },
     { "frames", OPT_INT64 | HAS_ARG | OPT_SPEC, {.off = OFFSET(max_frames)}, "set the number of frames to record", "number" },
     { "tag",   OPT_STRING | HAS_ARG | OPT_SPEC, {.off = OFFSET(codec_tags)}, "force codec tag/fourcc", "fourcc/tag" },
     { "q", HAS_ARG | OPT_EXPERT | OPT_DOUBLE | OPT_SPEC, {.off = OFFSET(qscale)}, "use fixed quality scale (VBR)", "q" },
@@ -4064,6 +4308,8 @@ static const OptionDef options[] = {
     { "filter", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(filters)}, "set stream filterchain", "filter_list" },
 #endif
     { "stats", OPT_BOOL, {&print_stats}, "print progress report during encoding", },
+    { "attach", HAS_ARG | OPT_FUNC2, {(void*)opt_attach}, "add an attachment to the output file", "filename" },
+    { "dump_attachment", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(dump_attachment)}, "extract an attachment into a file", "filename" },
 
     /* video options */
     { "vframes", HAS_ARG | OPT_VIDEO | OPT_FUNC2, {(void*)opt_video_frames}, "set the number of video frames to record", "number" },
@@ -4154,11 +4400,7 @@ int main(int argc, char **argv)
     avfilter_register_all();
 #endif
     av_register_all();
-
-#if HAVE_ISATTY
-    if(isatty(STDIN_FILENO))
-        avio_set_interrupt_cb(decode_interrupt_cb);
-#endif
+    avformat_network_init();
 
     show_banner();