]> git.sesse.net Git - ffmpeg/blobdiff - libavformat/utils.c
set stream aspect from mov tkhd width/height, patch by Andrew Wason, rectalogic at...
[ffmpeg] / libavformat / utils.c
index d209fe712f6920eb83e97b7421febde759b1181f..000ab9050e08da0b94d232cfeef30f192456efdf 100644 (file)
@@ -41,6 +41,17 @@ unsigned avformat_version(void)
     return LIBAVFORMAT_VERSION_INT;
 }
 
+const char *avformat_configuration(void)
+{
+    return FFMPEG_CONFIGURATION;
+}
+
+const char *avformat_license(void)
+{
+#define LICENSE_PREFIX "libavformat license: "
+    return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
+}
+
 /* fraction handling */
 
 /**
@@ -126,7 +137,14 @@ void av_register_output_format(AVOutputFormat *format)
     format->next = NULL;
 }
 
+#if LIBAVFORMAT_VERSION_MAJOR < 53
 int match_ext(const char *filename, const char *extensions)
+{
+    return av_match_ext(filename, extensions);
+}
+#endif
+
+int av_match_ext(const char *filename, const char *extensions)
 {
     const char *ext, *p;
     char ext1[32], *q;
@@ -171,8 +189,16 @@ static int match_format(const char *name, const char *names)
     return !strcasecmp(name, names);
 }
 
+#if LIBAVFORMAT_VERSION_MAJOR < 53
 AVOutputFormat *guess_format(const char *short_name, const char *filename,
                              const char *mime_type)
+{
+    return av_guess_format(short_name, filename, mime_type);
+}
+#endif
+
+AVOutputFormat *av_guess_format(const char *short_name, const char *filename,
+                                const char *mime_type)
 {
     AVOutputFormat *fmt, *fmt_found;
     int score_max, score;
@@ -182,7 +208,7 @@ AVOutputFormat *guess_format(const char *short_name, const char *filename,
     if (!short_name && filename &&
         av_filename_number_test(filename) &&
         av_guess_image2_codec(filename) != CODEC_ID_NONE) {
-        return guess_format("image2", NULL, NULL);
+        return av_guess_format("image2", NULL, NULL);
     }
 #endif
     /* Find the proper file type. */
@@ -196,7 +222,7 @@ AVOutputFormat *guess_format(const char *short_name, const char *filename,
         if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type))
             score += 10;
         if (filename && fmt->extensions &&
-            match_ext(filename, fmt->extensions)) {
+            av_match_ext(filename, fmt->extensions)) {
             score += 5;
         }
         if (score > score_max) {
@@ -208,17 +234,18 @@ AVOutputFormat *guess_format(const char *short_name, const char *filename,
     return fmt_found;
 }
 
+#if LIBAVFORMAT_VERSION_MAJOR < 53
 AVOutputFormat *guess_stream_format(const char *short_name, const char *filename,
                              const char *mime_type)
 {
-    AVOutputFormat *fmt = guess_format(short_name, filename, mime_type);
+    AVOutputFormat *fmt = av_guess_format(short_name, filename, mime_type);
 
     if (fmt) {
         AVOutputFormat *stream_fmt;
         char stream_format_name[64];
 
         snprintf(stream_format_name, sizeof(stream_format_name), "%s_stream", fmt->name);
-        stream_fmt = guess_format(stream_format_name, NULL, NULL);
+        stream_fmt = av_guess_format(stream_format_name, NULL, NULL);
 
         if (stream_fmt)
             fmt = stream_fmt;
@@ -226,6 +253,7 @@ AVOutputFormat *guess_stream_format(const char *short_name, const char *filename
 
     return fmt;
 }
+#endif
 
 enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
                             const char *filename, const char *mime_type, enum CodecType type){
@@ -297,7 +325,7 @@ static AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int
         if (fmt1->read_probe) {
             score = fmt1->read_probe(pd);
         } else if (fmt1->extensions) {
-            if (match_ext(pd->filename, fmt1->extensions)) {
+            if (av_match_ext(pd->filename, fmt1->extensions)) {
                 score = 50;
             }
         }
@@ -315,18 +343,23 @@ AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
     return av_probe_input_format2(pd, is_opened, &score);
 }
 
-static int set_codec_from_probe_data(AVStream *st, AVProbeData *pd, int score)
+static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd, int score)
 {
     AVInputFormat *fmt;
     fmt = av_probe_input_format2(pd, 1, &score);
 
     if (fmt) {
+        av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
+               pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
         if (!strcmp(fmt->name, "mp3")) {
             st->codec->codec_id = CODEC_ID_MP3;
             st->codec->codec_type = CODEC_TYPE_AUDIO;
         } else if (!strcmp(fmt->name, "ac3")) {
             st->codec->codec_id = CODEC_ID_AC3;
             st->codec->codec_type = CODEC_TYPE_AUDIO;
+        } else if (!strcmp(fmt->name, "eac3")) {
+            st->codec->codec_id = CODEC_ID_EAC3;
+            st->codec->codec_type = CODEC_TYPE_AUDIO;
         } else if (!strcmp(fmt->name, "mpegvideo")) {
             st->codec->codec_id = CODEC_ID_MPEG2VIDEO;
             st->codec->codec_type = CODEC_TYPE_VIDEO;
@@ -336,6 +369,9 @@ static int set_codec_from_probe_data(AVStream *st, AVProbeData *pd, int score)
         } else if (!strcmp(fmt->name, "h264")) {
             st->codec->codec_id = CODEC_ID_H264;
             st->codec->codec_type = CODEC_TYPE_VIDEO;
+        } else if (!strcmp(fmt->name, "dts")) {
+            st->codec->codec_id = CODEC_ID_DTS;
+            st->codec->codec_type = CODEC_TYPE_AUDIO;
         }
     }
     return !!fmt;
@@ -398,6 +434,8 @@ int av_open_input_stream(AVFormatContext **ic_ptr,
     ff_metadata_demux_compat(ic);
 #endif
 
+    ic->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
+
     *ic_ptr = ic;
     return 0;
  fail:
@@ -430,6 +468,7 @@ int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
     int err, probe_size;
     AVProbeData probe_data, *pd = &probe_data;
     ByteIOContext *pb = NULL;
+    void *logctx= ap && ap->prealloced_context ? *ic_ptr : NULL;
 
     pd->filename = "";
     if (filename)
@@ -458,6 +497,12 @@ int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
             /* read probe data */
             pd->buf= av_realloc(pd->buf, probe_size + AVPROBE_PADDING_SIZE);
             pd->buf_size = get_buffer(pb, pd->buf, probe_size);
+
+            if ((int)pd->buf_size < 0) {
+                err = pd->buf_size;
+                goto fail;
+            }
+
             memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
             if (url_fseek(pb, 0, SEEK_SET) < 0) {
                 url_fclose(pb);
@@ -469,6 +514,12 @@ int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
             }
             /* guess file format */
             fmt = av_probe_input_format2(pd, 1, &score);
+            if(fmt){
+                if(score <= AVPROBE_SCORE_MAX/4){ //this can only be true in the last iteration
+                    av_log(logctx, AV_LOG_WARNING, "Format detected only with low score of %d, misdetection possible!\n", score);
+                }else
+                    av_log(logctx, AV_LOG_DEBUG, "Probed with size=%d and score=%d\n", probe_size, score);
+            }
         }
         av_freep(&pd->buf);
     }
@@ -494,6 +545,8 @@ int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
     av_freep(&pd->buf);
     if (pb)
         url_fclose(pb);
+    if (ap && ap->prealloced_context)
+        av_free(*ic_ptr);
     *ic_ptr = NULL;
     return err;
 
@@ -520,7 +573,7 @@ static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
 
 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
 {
-    int ret;
+    int ret, i;
     AVStream *st;
 
     for(;;){
@@ -528,8 +581,14 @@ int av_read_packet(AVFormatContext *s, AVPacket *pkt)
 
         if (pktl) {
             *pkt = pktl->pkt;
-            if(s->streams[pkt->stream_index]->codec->codec_id != CODEC_ID_PROBE){
+            if(s->streams[pkt->stream_index]->codec->codec_id != CODEC_ID_PROBE ||
+               !s->streams[pkt->stream_index]->probe_packets ||
+               s->raw_packet_buffer_remaining_size < pkt->size){
+                AVProbeData *pd = &s->streams[pkt->stream_index]->probe_data;
+                av_freep(&pd->buf);
+                pd->buf_size = 0;
                 s->raw_packet_buffer = pktl->next;
+                s->raw_packet_buffer_remaining_size += pkt->size;
                 av_free(pktl);
                 return 0;
             }
@@ -537,8 +596,13 @@ int av_read_packet(AVFormatContext *s, AVPacket *pkt)
 
         av_init_packet(pkt);
         ret= s->iformat->read_packet(s, pkt);
-        if (ret < 0)
-            return ret;
+        if (ret < 0) {
+            if (!pktl || ret == AVERROR(EAGAIN))
+                return ret;
+            for (i = 0; i < s->nb_streams; i++)
+                s->streams[i]->probe_packets = 0;
+            continue;
+        }
         st= s->streams[pkt->stream_index];
 
         switch(st->codec->codec_type){
@@ -553,13 +617,17 @@ int av_read_packet(AVFormatContext *s, AVPacket *pkt)
             break;
         }
 
-        if(!pktl && st->codec->codec_id!=CODEC_ID_PROBE)
+        if(!pktl && (st->codec->codec_id != CODEC_ID_PROBE ||
+                     !st->probe_packets))
             return ret;
 
         add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
+        s->raw_packet_buffer_remaining_size -= pkt->size;
 
         if(st->codec->codec_id == CODEC_ID_PROBE){
             AVProbeData *pd = &st->probe_data;
+            av_log(s, AV_LOG_DEBUG, "probing stream %d\n", st->index);
+            --st->probe_packets;
 
             pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
             memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
@@ -567,10 +635,11 @@ int av_read_packet(AVFormatContext *s, AVPacket *pkt)
             memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
 
             if(av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
-                set_codec_from_probe_data(st, pd, 1);
+                set_codec_from_probe_data(s, st, pd, 1);
                 if(st->codec->codec_id != CODEC_ID_PROBE){
                     pd->buf_size=0;
                     av_freep(&pd->buf);
+                    av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
                 }
             }
         }
@@ -600,7 +669,7 @@ static int get_audio_frame_size(AVCodecContext *enc, int size)
             /* used for example by ADPCM codecs */
             if (enc->bit_rate == 0)
                 return -1;
-            frame_size = (size * 8 * enc->sample_rate) / enc->bit_rate;
+            frame_size = ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
         }
     } else {
         frame_size = enc->frame_size;
@@ -739,6 +808,10 @@ static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
     int num, den, presentation_delayed, delay, i;
     int64_t offset;
 
+    if (st->codec->codec_id != CODEC_ID_H264 && pc && pc->pict_type == FF_B_TYPE)
+        //FIXME Set low_delay = 0 when has_b_frames = 1
+        st->codec->has_b_frames = 1;
+
     /* do we have a video B-frame ? */
     delay= st->codec->has_b_frames;
     presentation_delayed = 0;
@@ -923,7 +996,7 @@ static int av_read_frame_internal(AVFormatContext *s, AVPacket *pkt)
                     pkt->pts = st->parser->pts;
                     pkt->dts = st->parser->dts;
                     pkt->pos = st->parser->pos;
-                    pkt->destruct = av_destruct_packet_nofree;
+                    pkt->destruct = NULL;
                     compute_pkt_fields(s, st, st->parser, pkt);
 
                     if((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & PKT_FLAG_KEY){
@@ -978,11 +1051,12 @@ static int av_read_frame_internal(AVFormatContext *s, AVPacket *pkt)
             }
 
             if(s->debug & FF_FDEBUG_TS)
-                av_log(s, AV_LOG_DEBUG, "av_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d,  flags=%d\n",
+                av_log(s, AV_LOG_DEBUG, "av_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
                     st->cur_pkt.stream_index,
                     st->cur_pkt.pts,
                     st->cur_pkt.dts,
                     st->cur_pkt.size,
+                    st->cur_pkt.duration,
                     st->cur_pkt.flags);
 
             s->cur_st = st;
@@ -1004,11 +1078,12 @@ static int av_read_frame_internal(AVFormatContext *s, AVPacket *pkt)
         }
     }
     if(s->debug & FF_FDEBUG_TS)
-        av_log(s, AV_LOG_DEBUG, "av_read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, flags=%d\n",
+        av_log(s, AV_LOG_DEBUG, "av_read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
             pkt->stream_index,
             pkt->pts,
             pkt->dts,
             pkt->size,
+            pkt->duration,
             pkt->flags);
 
     return 0;
@@ -1081,6 +1156,15 @@ static void flush_packet_queue(AVFormatContext *s)
         av_free_packet(&pktl->pkt);
         av_free(pktl);
     }
+    while(s->raw_packet_buffer){
+        pktl = s->raw_packet_buffer;
+        s->raw_packet_buffer = pktl->next;
+        av_free_packet(&pktl->pkt);
+        av_free(pktl);
+    }
+    s->packet_buffer_end=
+    s->raw_packet_buffer_end= NULL;
+    s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
 }
 
 /*******************************************************/
@@ -1108,10 +1192,10 @@ int av_find_default_stream_index(AVFormatContext *s)
 /**
  * Flush the frame reader.
  */
-static void av_read_frame_flush(AVFormatContext *s)
+void av_read_frame_flush(AVFormatContext *s)
 {
     AVStream *st;
-    int i;
+    int i, j;
 
     flush_packet_queue(s);
 
@@ -1132,6 +1216,11 @@ static void av_read_frame_flush(AVFormatContext *s)
         /* fail safe */
         st->cur_ptr = NULL;
         st->cur_len = 0;
+
+        st->probe_packets = MAX_PROBE_PACKETS;
+
+        for(j=0; j<MAX_REORDER_DELAY+1; j++)
+            st->pts_buffer[j]= AV_NOPTS_VALUE;
     }
 }
 
@@ -1243,6 +1332,7 @@ int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts
     int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
     int64_t ts_min, ts_max, ts;
     int index;
+    int64_t ret;
     AVStream *st;
 
     if (stream_index < 0)
@@ -1295,7 +1385,8 @@ int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts
         return -1;
 
     /* do the seek */
-    url_fseek(s->pb, pos, SEEK_SET);
+    if ((ret = url_fseek(s->pb, pos, SEEK_SET)) < 0)
+        return ret;
 
     av_update_cur_dts(s, st, ts);
 
@@ -1445,7 +1536,8 @@ static int av_seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos,
 static int av_seek_frame_generic(AVFormatContext *s,
                                  int stream_index, int64_t timestamp, int flags)
 {
-    int index, ret;
+    int index;
+    int64_t ret;
     AVStream *st;
     AVIndexEntry *ie;
 
@@ -1683,7 +1775,7 @@ static void av_estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset
     AVPacket pkt1, *pkt = &pkt1;
     AVStream *st;
     int read_size, i, ret;
-    int64_t end_time;
+    int64_t end_time, start_time[MAX_STREAMS];
     int64_t filesize, offset, duration;
 
     ic->cur_st = NULL;
@@ -1693,6 +1785,13 @@ static void av_estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset
 
     for(i=0;i<ic->nb_streams;i++) {
         st = ic->streams[i];
+        if(st->start_time != AV_NOPTS_VALUE){
+            start_time[i]= st->start_time;
+        }else if(st->first_dts != AV_NOPTS_VALUE){
+            start_time[i]= st->first_dts;
+        }else
+            av_log(st->codec, AV_LOG_WARNING, "start time is not set in av_estimate_timings_from_pts\n");
+
         if (st->parser) {
             av_parser_close(st->parser);
             st->parser= NULL;
@@ -1700,36 +1799,6 @@ static void av_estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset
         }
     }
 
-    /* we read the first packets to get the first PTS (not fully
-       accurate, but it is enough now) */
-    url_fseek(ic->pb, 0, SEEK_SET);
-    read_size = 0;
-    for(;;) {
-        if (read_size >= DURATION_MAX_READ_SIZE)
-            break;
-        /* if all info is available, we can stop */
-        for(i = 0;i < ic->nb_streams; i++) {
-            st = ic->streams[i];
-            if (st->start_time == AV_NOPTS_VALUE)
-                break;
-        }
-        if (i == ic->nb_streams)
-            break;
-
-        do{
-            ret = av_read_packet(ic, pkt);
-        }while(ret == AVERROR(EAGAIN));
-        if (ret != 0)
-            break;
-        read_size += pkt->size;
-        st = ic->streams[pkt->stream_index];
-        if (pkt->pts != AV_NOPTS_VALUE) {
-            if (st->start_time == AV_NOPTS_VALUE)
-                st->start_time = pkt->pts;
-        }
-        av_free_packet(pkt);
-    }
-
     /* estimate the end time (duration) */
     /* XXX: may need to support wrapping */
     filesize = ic->file_size;
@@ -1751,9 +1820,9 @@ static void av_estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset
         read_size += pkt->size;
         st = ic->streams[pkt->stream_index];
         if (pkt->pts != AV_NOPTS_VALUE &&
-            st->start_time != AV_NOPTS_VALUE) {
+            start_time[pkt->stream_index] != AV_NOPTS_VALUE) {
             end_time = pkt->pts;
-            duration = end_time - st->start_time;
+            duration = end_time - start_time[pkt->stream_index];
             if (duration > 0) {
                 if (st->duration == AV_NOPTS_VALUE ||
                     st->duration < duration)
@@ -1797,6 +1866,7 @@ static void av_estimate_timings(AVFormatContext *ic, int64_t old_offset)
            the components */
         fill_all_stream_timings(ic);
     } else {
+        av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
         /* less precise: use bitrate info */
         av_estimate_timings_from_bit_rate(ic);
     }
@@ -1828,7 +1898,9 @@ static int has_codec_parameters(AVCodecContext *enc)
         val = enc->sample_rate && enc->channels && enc->sample_fmt != SAMPLE_FMT_NONE;
         if(!enc->frame_size &&
            (enc->codec_id == CODEC_ID_VORBIS ||
-            enc->codec_id == CODEC_ID_AAC))
+            enc->codec_id == CODEC_ID_AAC ||
+            enc->codec_id == CODEC_ID_MP3 ||
+            enc->codec_id == CODEC_ID_SPEEX))
             return 0;
         break;
     case CODEC_TYPE_VIDEO:
@@ -1848,39 +1920,40 @@ static int try_decode_frame(AVStream *st, AVPacket *avpkt)
     int got_picture, data_size, ret=0;
     AVFrame picture;
 
-  if(!st->codec->codec){
-    codec = avcodec_find_decoder(st->codec->codec_id);
-    if (!codec)
-        return -1;
-    ret = avcodec_open(st->codec, codec);
-    if (ret < 0)
-        return ret;
-  }
+    if(!st->codec->codec){
+        codec = avcodec_find_decoder(st->codec->codec_id);
+        if (!codec)
+            return -1;
+        ret = avcodec_open(st->codec, codec);
+        if (ret < 0)
+            return ret;
+    }
 
-  if(!has_codec_parameters(st->codec)){
-    switch(st->codec->codec_type) {
-    case CODEC_TYPE_VIDEO:
-        ret = avcodec_decode_video2(st->codec, &picture,
-                                    &got_picture, avpkt);
-        break;
-    case CODEC_TYPE_AUDIO:
-        data_size = FFMAX(avpkt->size, AVCODEC_MAX_AUDIO_FRAME_SIZE);
-        samples = av_malloc(data_size);
-        if (!samples)
-            goto fail;
-        ret = avcodec_decode_audio3(st->codec, samples,
-                                    &data_size, avpkt);
-        av_free(samples);
-        break;
-    default:
-        break;
+    if(!has_codec_parameters(st->codec)){
+        switch(st->codec->codec_type) {
+        case CODEC_TYPE_VIDEO:
+            avcodec_get_frame_defaults(&picture);
+            ret = avcodec_decode_video2(st->codec, &picture,
+                                        &got_picture, avpkt);
+            break;
+        case CODEC_TYPE_AUDIO:
+            data_size = FFMAX(avpkt->size, AVCODEC_MAX_AUDIO_FRAME_SIZE);
+            samples = av_malloc(data_size);
+            if (!samples)
+                goto fail;
+            ret = avcodec_decode_audio3(st->codec, samples,
+                                        &data_size, avpkt);
+            av_free(samples);
+            break;
+        default:
+            break;
+        }
     }
-  }
  fail:
     return ret;
 }
 
-unsigned int codec_get_tag(const AVCodecTag *tags, int id)
+unsigned int ff_codec_get_tag(const AVCodecTag *tags, int id)
 {
     while (tags->id != CODEC_ID_NONE) {
         if (tags->id == id)
@@ -1890,7 +1963,7 @@ unsigned int codec_get_tag(const AVCodecTag *tags, int id)
     return 0;
 }
 
-enum CodecID codec_get_id(const AVCodecTag *tags, unsigned int tag)
+enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
 {
     int i;
     for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
@@ -1911,7 +1984,7 @@ unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
 {
     int i;
     for(i=0; tags && tags[i]; i++){
-        int tag= codec_get_tag(tags[i], id);
+        int tag= ff_codec_get_tag(tags[i], id);
         if(tag) return tag;
     }
     return 0;
@@ -1921,7 +1994,7 @@ enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
 {
     int i;
     for(i=0; tags && tags[i]; i++){
-        enum CodecID id= codec_get_id(tags[i], tag);
+        enum CodecID id= ff_codec_get_id(tags[i], tag);
         if(id!=CODEC_ID_NONE) return id;
     }
     return CODEC_ID_NONE;
@@ -1947,9 +2020,6 @@ static void compute_chapters_end(AVFormatContext *s)
     }
 }
 
-/* absolute maximum size we read until we abort */
-#define MAX_READ_SIZE        5000000
-
 #define MAX_STD_TIMEBASES (60*12+5)
 static int get_std_framerate(int i){
     if(i<60*12) return i*1001;
@@ -2018,6 +2088,7 @@ int av_find_stream_info(AVFormatContext *ic)
     for(;;) {
         if(url_interrupt_cb()){
             ret= AVERROR(EINTR);
+            av_log(ic, AV_LOG_DEBUG, "interrupted\n");
             break;
         }
 
@@ -2042,12 +2113,14 @@ int av_find_stream_info(AVFormatContext *ic)
             if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
                 /* if we found the info for all the codecs, we can stop */
                 ret = count;
+                av_log(ic, AV_LOG_DEBUG, "All info found\n");
                 break;
             }
         }
         /* we did not get all the codec info, but we read too much data */
-        if (read_size >= MAX_READ_SIZE) {
+        if (read_size >= ic->probesize) {
             ret = count;
+            av_log(ic, AV_LOG_WARNING, "MAX_READ_SIZE:%d reached\n", ic->probesize);
             break;
         }
 
@@ -2064,7 +2137,7 @@ int av_find_stream_info(AVFormatContext *ic)
                 if (!has_codec_parameters(st->codec)){
                     char buf[256];
                     avcodec_string(buf, sizeof(buf), st->codec, 0);
-                    av_log(ic, AV_LOG_INFO, "Could not find codec parameters (%s)\n", buf);
+                    av_log(ic, AV_LOG_WARNING, "Could not find codec parameters (%s)\n", buf);
                 } else {
                     ret = 0;
                 }
@@ -2082,8 +2155,10 @@ int av_find_stream_info(AVFormatContext *ic)
 
         st = ic->streams[pkt->stream_index];
         if(codec_info_nb_frames[st->index]>1) {
-            if (st->time_base.den > 0 && av_rescale_q(codec_info_duration[st->index], st->time_base, AV_TIME_BASE_Q) >= ic->max_analyze_duration)
+            if (st->time_base.den > 0 && av_rescale_q(codec_info_duration[st->index], st->time_base, AV_TIME_BASE_Q) >= ic->max_analyze_duration){
+                av_log(ic, AV_LOG_WARNING, "max_analyze_duration reached\n");
                 break;
+            }
             codec_info_duration[st->index] += pkt->duration;
         }
         if (pkt->duration != 0)
@@ -2129,21 +2204,7 @@ int av_find_stream_info(AVFormatContext *ic)
            decompress the frame. We try to avoid that in most cases as
            it takes longer and uses more memory. For MPEG-4, we need to
            decompress for QuickTime. */
-        if (!has_codec_parameters(st->codec) /*&&
-            (st->codec->codec_id == CODEC_ID_FLV1 ||
-             st->codec->codec_id == CODEC_ID_H264 ||
-             st->codec->codec_id == CODEC_ID_H263 ||
-             st->codec->codec_id == CODEC_ID_H261 ||
-             st->codec->codec_id == CODEC_ID_VORBIS ||
-             st->codec->codec_id == CODEC_ID_MJPEG ||
-             st->codec->codec_id == CODEC_ID_PNG ||
-             st->codec->codec_id == CODEC_ID_PAM ||
-             st->codec->codec_id == CODEC_ID_PGM ||
-             st->codec->codec_id == CODEC_ID_PGMYUV ||
-             st->codec->codec_id == CODEC_ID_PBM ||
-             st->codec->codec_id == CODEC_ID_PPM ||
-             st->codec->codec_id == CODEC_ID_SHORTEN ||
-             (st->codec->codec_id == CODEC_ID_MPEG4 && !st->need_parsing))*/)
+        if (!has_codec_parameters(st->codec))
             try_decode_frame(st, pkt);
 
         count++;
@@ -2157,6 +2218,10 @@ int av_find_stream_info(AVFormatContext *ic)
     }
     for(i=0;i<ic->nb_streams;i++) {
         st = ic->streams[i];
+        if(codec_info_nb_frames[i]>2)
+            av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
+                     (codec_info_nb_frames[i]-2)*(int64_t)st->time_base.den,
+                      codec_info_duration[i]    *(int64_t)st->time_base.num, 60000);
         if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
             if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample)
                 st->codec->codec_tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
@@ -2341,6 +2406,7 @@ AVStream *av_new_stream(AVFormatContext *s, int id)
            timestamps corrected before they are returned to the user */
     st->cur_dts = 0;
     st->first_dts = AV_NOPTS_VALUE;
+    st->probe_packets = MAX_PROBE_PACKETS;
 
     /* default pts setting is MPEG-like */
     av_set_pts_info(st, 33, 1, 90000);
@@ -2435,6 +2501,11 @@ int av_write_header(AVFormatContext *s)
     AVStream *st;
 
     // some sanity checks
+    if (s->nb_streams == 0) {
+        av_log(s, AV_LOG_ERROR, "no streams\n");
+        return -1;
+    }
+
     for(i=0;i<s->nb_streams;i++) {
         st = s->streams[i];
 
@@ -2521,11 +2592,11 @@ int av_write_header(AVFormatContext *s)
 }
 
 //FIXME merge with compute_pkt_fields
-static int compute_pkt_fields2(AVStream *st, AVPacket *pkt){
+static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
     int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
     int num, den, frame_size, i;
 
-//    av_log(st->codec, AV_LOG_DEBUG, "av_write_frame: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n", pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
+//    av_log(s, AV_LOG_DEBUG, "av_write_frame: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n", pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
 
 /*    if(pkt->pts == AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE)
         return -1;*/
@@ -2560,15 +2631,17 @@ static int compute_pkt_fields2(AVStream *st, AVPacket *pkt){
     }
 
     if(st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && st->cur_dts >= pkt->dts){
-        av_log(st->codec, AV_LOG_ERROR, "error, non monotone timestamps %"PRId64" >= %"PRId64"\n", st->cur_dts, pkt->dts);
+        av_log(s, AV_LOG_ERROR,
+               "st:%d error, non monotone timestamps %"PRId64" >= %"PRId64"\n",
+               st->index, st->cur_dts, pkt->dts);
         return -1;
     }
     if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
-        av_log(st->codec, AV_LOG_ERROR, "error, pts < dts\n");
+        av_log(s, AV_LOG_ERROR, "st:%d error, pts < dts\n", st->index);
         return -1;
     }
 
-//    av_log(NULL, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
+//    av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
     st->cur_dts= pkt->dts;
     st->pts.val= pkt->dts;
 
@@ -2595,7 +2668,7 @@ static int compute_pkt_fields2(AVStream *st, AVPacket *pkt){
 
 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
 {
-    int ret = compute_pkt_fields2(s->streams[pkt->stream_index], pkt);
+    int ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
 
     if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
         return ret;
@@ -2613,18 +2686,32 @@ void ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
 
     this_pktl = av_mallocz(sizeof(AVPacketList));
     this_pktl->pkt= *pkt;
-    if(pkt->destruct == av_destruct_packet)
-        pkt->destruct= NULL; // not shared -> must keep original from being freed
-    else
-        av_dup_packet(&this_pktl->pkt);  //shared -> must dup
-
-    next_point = &s->packet_buffer;
-    while(*next_point){
-        if(compare(s, &(*next_point)->pkt, pkt))
-            break;
-        next_point= &(*next_point)->next;
+    pkt->destruct= NULL;             // do not free original but only the copy
+    av_dup_packet(&this_pktl->pkt);  // duplicate the packet if it uses non-alloced memory
+
+    if(s->streams[pkt->stream_index]->last_in_packet_buffer){
+        next_point = &(s->streams[pkt->stream_index]->last_in_packet_buffer->next);
+    }else
+        next_point = &s->packet_buffer;
+
+    if(*next_point){
+        if(compare(s, &s->packet_buffer_end->pkt, pkt)){
+            while(!compare(s, &(*next_point)->pkt, pkt)){
+                next_point= &(*next_point)->next;
+            }
+            goto next_non_null;
+        }else{
+            next_point = &(s->packet_buffer_end->next);
+        }
     }
+    assert(!*next_point);
+
+    s->packet_buffer_end= this_pktl;
+next_non_null:
+
     this_pktl->next= *next_point;
+
+    s->streams[pkt->stream_index]->last_in_packet_buffer=
     *next_point= this_pktl;
 }
 
@@ -2644,27 +2731,25 @@ int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush){
     AVPacketList *pktl;
     int stream_count=0;
-    int streams[MAX_STREAMS];
+    int i;
 
     if(pkt){
         ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
     }
 
-    memset(streams, 0, sizeof(streams));
-    pktl= s->packet_buffer;
-    while(pktl){
-//av_log(s, AV_LOG_DEBUG, "show st:%d dts:%"PRId64"\n", pktl->pkt.stream_index, pktl->pkt.dts);
-        if(streams[ pktl->pkt.stream_index ] == 0)
-            stream_count++;
-        streams[ pktl->pkt.stream_index ]++;
-        pktl= pktl->next;
-    }
+    for(i=0; i < s->nb_streams; i++)
+        stream_count+= !!s->streams[i]->last_in_packet_buffer;
 
     if(stream_count && (s->nb_streams == stream_count || flush)){
         pktl= s->packet_buffer;
         *out= pktl->pkt;
 
         s->packet_buffer= pktl->next;
+        if(!s->packet_buffer)
+            s->packet_buffer_end= NULL;
+
+        if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
+            s->streams[out->stream_index]->last_in_packet_buffer= NULL;
         av_freep(&pktl);
         return 1;
     }else{
@@ -2697,7 +2782,7 @@ int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
         return 0;
 
 //av_log(NULL, AV_LOG_DEBUG, "av_interleaved_write_frame %d %"PRId64" %"PRId64"\n", pkt->size, pkt->dts, pkt->pts);
-    if(compute_pkt_fields2(st, pkt) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
+    if(compute_pkt_fields2(s, st, pkt) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
         return -1;
 
     if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
@@ -2760,6 +2845,11 @@ void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int i
     AVProgram *program=NULL;
     void *tmp;
 
+    if (idx >= ac->nb_streams) {
+        av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
+        return;
+    }
+
     for(i=0; i<ac->nb_programs; i++){
         if(ac->programs[i]->id != progid)
             continue;
@@ -2784,6 +2874,19 @@ static void print_fps(double d, const char *postfix){
     else                  av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
 }
 
+static void dump_metadata(void *ctx, AVMetadata *m, const char *indent)
+{
+    if(m && !(m->count == 1 && av_metadata_get(m, "language", NULL, 0))){
+        AVMetadataTag *tag=NULL;
+
+        av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
+        while((tag=av_metadata_get(m, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
+            if(strcmp("language", tag->key))
+                av_log(ctx, AV_LOG_INFO, "%s  %-16s: %s\n", indent, tag->key, tag->value);
+        }
+    }
+}
+
 /* "user interface" functions */
 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
 {
@@ -2814,6 +2917,8 @@ static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_out
                  display_aspect_ratio.num, display_aspect_ratio.den);
     }
     if(st->codec->codec_type == CODEC_TYPE_VIDEO){
+        if(st->avg_frame_rate.den && st->avg_frame_rate.num)
+            print_fps(av_q2d(st->avg_frame_rate), "fps");
         if(st->r_frame_rate.den && st->r_frame_rate.num)
             print_fps(av_q2d(st->r_frame_rate), "tbr");
         if(st->time_base.den && st->time_base.num)
@@ -2822,6 +2927,7 @@ static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_out
             print_fps(1/av_q2d(st->codec->time_base), "tbc");
     }
     av_log(NULL, AV_LOG_INFO, "\n");
+    dump_metadata(NULL, st->metadata, "    ");
 }
 
 void dump_format(AVFormatContext *ic,
@@ -2830,12 +2936,16 @@ void dump_format(AVFormatContext *ic,
                  int is_output)
 {
     int i;
+    uint8_t *printed = av_mallocz(ic->nb_streams);
+    if (ic->nb_streams && !printed)
+        return;
 
     av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
             is_output ? "Output" : "Input",
             index,
             is_output ? ic->oformat->name : ic->iformat->name,
             is_output ? "to" : "from", url);
+    dump_metadata(NULL, ic->metadata, "  ");
     if (!is_output) {
         av_log(NULL, AV_LOG_INFO, "  Duration: ");
         if (ic->duration != AV_NOPTS_VALUE) {
@@ -2868,18 +2978,27 @@ void dump_format(AVFormatContext *ic,
         av_log(NULL, AV_LOG_INFO, "\n");
     }
     if(ic->nb_programs) {
-        int j, k;
+        int j, k, total = 0;
         for(j=0; j<ic->nb_programs; j++) {
             AVMetadataTag *name = av_metadata_get(ic->programs[j]->metadata,
                                                   "name", NULL, 0);
             av_log(NULL, AV_LOG_INFO, "  Program %d %s\n", ic->programs[j]->id,
                    name ? name->value : "");
-            for(k=0; k<ic->programs[j]->nb_stream_indexes; k++)
+            dump_metadata(NULL, ic->programs[j]->metadata, "    ");
+            for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
                 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
-         }
-    } else
+                printed[ic->programs[j]->stream_index[k]] = 1;
+            }
+            total += ic->programs[j]->nb_stream_indexes;
+        }
+        if (total < ic->nb_streams)
+            av_log(NULL, AV_LOG_INFO, "  No Program\n");
+    }
     for(i=0;i<ic->nb_streams;i++)
-        dump_stream_format(ic, i, index, is_output);
+        if (!printed[i])
+            dump_stream_format(ic, i, index, is_output);
+
+    av_free(printed);
 }
 
 #if LIBAVFORMAT_VERSION_MAJOR < 53
@@ -3121,6 +3240,7 @@ int av_get_frame_filename(char *buf, int buf_size,
 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
 {
     int len, i, j, c;
+#undef fprintf
 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
 
     for(i=0;i<size;i+=16) {
@@ -3159,6 +3279,7 @@ void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
  //FIXME needs to know the time_base
 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload)
 {
+#undef fprintf
 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
     PRINT("stream #%d:\n", pkt->stream_index);
     PRINT("  keyframe=%d\n", ((pkt->flags & PKT_FLAG_KEY) != 0));
@@ -3270,13 +3391,16 @@ char *ff_data_to_hex(char *buff, const uint8_t *src, int s)
 }
 
 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
-                     int pts_num, int pts_den)
+                     unsigned int pts_num, unsigned int pts_den)
 {
-    unsigned int gcd= av_gcd(pts_num, pts_den);
     s->pts_wrap_bits = pts_wrap_bits;
-    s->time_base.num = pts_num/gcd;
-    s->time_base.den = pts_den/gcd;
 
-    if(gcd>1)
-        av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, gcd);
+    if(av_reduce(&s->time_base.num, &s->time_base.den, pts_num, pts_den, INT_MAX)){
+        if(s->time_base.num != pts_num)
+            av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/s->time_base.num);
+    }else
+        av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
+
+    if(!s->time_base.num || !s->time_base.den)
+        s->time_base.num= s->time_base.den= 0;
 }