static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
static AVRational frame_rate = (AVRational) {0,0};
static float video_qscale = 0;
-static int video_qdiff = 3;
static uint16_t *intra_matrix = NULL;
static uint16_t *inter_matrix = NULL;
#if 0 //experimental, (can be removed)
for(i=0;i<nb_input_files;i++)
av_close_input_file(input_files[i]);
- av_free_static();
-
av_free(intra_matrix);
av_free(inter_matrix);
{
int i, err;
AVFormatContext *ic;
+ int nopts = 0;
err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
if (err < 0)
st->codec = avcodec_alloc_context();
memcpy(st->codec, ic->streams[i]->codec, sizeof(AVCodecContext));
s->streams[i] = st;
+
+ if (st->codec->codec_type == CODEC_TYPE_AUDIO && audio_stream_copy)
+ st->stream_copy = 1;
+ else if (st->codec->codec_type == CODEC_TYPE_VIDEO && video_stream_copy)
+ st->stream_copy = 1;
+
+ if(!st->codec->thread_count)
+ st->codec->thread_count = 1;
+ if(st->codec->thread_count>1)
+ avcodec_thread_init(st->codec, st->codec->thread_count);
+
+ if(st->codec->flags & CODEC_FLAG_BITEXACT)
+ nopts = 1;
}
+ if (!nopts)
+ s->timestamp = av_gettime();
+
av_close_input_file(ic);
return 0;
}
else
opkt.pts= AV_NOPTS_VALUE;
- if (pkt->dts == AV_NOPTS_VALUE)
- opkt.dts = av_rescale_q(ist->next_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);
+ 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.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
opkt.flags= pkt->flags;
}
}
if (!found) {
+ int i= ost->file_index;
+ dump_format(output_files[i], i, output_files[i]->filename, 1);
fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
ost->file_index, ost->index);
av_exit(1);
ost->padright = frame_padright;
if (!ost->video_resample) {
avcodec_get_frame_defaults(&ost->pict_tmp);
- if( avpicture_alloc( (AVPicture*)&ost->pict_tmp, codec->pix_fmt,
- codec->width, codec->height ) )
+ if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
+ codec->width, codec->height))
goto fail;
}
}
if (ost->video_resample) {
avcodec_get_frame_defaults(&ost->pict_tmp);
- if( avpicture_alloc( (AVPicture*)&ost->pict_tmp, codec->pix_fmt,
- codec->width, codec->height ) ) {
+ if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
+ codec->width, codec->height)) {
fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
av_exit(1);
}
int out_file_index = meta_data_maps[i].out_file;
int in_file_index = meta_data_maps[i].in_file;
- if ( out_file_index < 0 || out_file_index >= nb_output_files ) {
+ if (out_file_index < 0 || out_file_index >= nb_output_files) {
fprintf(stderr, "Invalid output file index %d map_meta_data(%d,%d)\n", out_file_index, out_file_index, in_file_index);
ret = AVERROR(EINVAL);
goto fail;
}
- if ( in_file_index < 0 || in_file_index >= nb_input_files ) {
+ if (in_file_index < 0 || in_file_index >= nb_input_files) {
fprintf(stderr, "Invalid input file index %d map_meta_data(%d,%d)\n", in_file_index, out_file_index, in_file_index);
ret = AVERROR(EINVAL);
goto fail;
print_sdp(output_files, nb_output_files);
}
- if ( !using_stdin && verbose >= 0) {
+ if (!using_stdin && verbose >= 0) {
fprintf(stderr, "Press [q] to stop encoding\n");
url_set_interrupt_cb(decode_interrupt_cb);
}
}
}
-extern int ffm_nopts;
-
static int opt_default(const char *opt, const char *arg){
int type;
const AVOption *o= NULL;
for(type=0; type<CODEC_TYPE_NB; type++){
const AVOption *o2 = av_find_opt(avctx_opts[0], opt, NULL, opt_types[type], opt_types[type]);
if(o2)
- o = av_set_string(avctx_opts[type], opt, arg);
+ o = av_set_string2(avctx_opts[type], opt, arg, 1);
}
if(!o)
- o = av_set_string(avformat_opts, opt, arg);
+ o = av_set_string2(avformat_opts, opt, arg, 1);
if(!o)
- o = av_set_string(sws_opts, opt, arg);
+ o = av_set_string2(sws_opts, opt, arg, 1);
if(!o){
if(opt[0] == 'a')
- o = av_set_string(avctx_opts[CODEC_TYPE_AUDIO], opt+1, arg);
+ o = av_set_string2(avctx_opts[CODEC_TYPE_AUDIO], opt+1, arg, 1);
else if(opt[0] == 'v')
- o = av_set_string(avctx_opts[CODEC_TYPE_VIDEO], opt+1, arg);
+ o = av_set_string2(avctx_opts[CODEC_TYPE_VIDEO], opt+1, arg, 1);
else if(opt[0] == 's')
- o = av_set_string(avctx_opts[CODEC_TYPE_SUBTITLE], opt+1, arg);
+ o = av_set_string2(avctx_opts[CODEC_TYPE_SUBTITLE], opt+1, arg, 1);
}
if(!o)
return -1;
opt_names= av_realloc(opt_names, sizeof(void*)*(opt_name_count+1));
opt_names[opt_name_count++]= o->name;
-#if defined(CONFIG_FFM_DEMUXER) || defined(CONFIG_FFM_MUXER)
- /* disable generate of real time pts in ffm (need to be supressed anyway) */
- if(avctx_opts[0]->flags & CODEC_FLAG_BITEXACT)
- ffm_nopts = 1;
-#endif
-
- if(avctx_opts[0]->debug)
+ if(avctx_opts[0]->debug || avformat_opts->debug)
av_log_set_level(AV_LOG_DEBUG);
return 0;
}
}
}
-static void opt_qdiff(const char *arg)
-{
- video_qdiff = atoi(arg);
- if (video_qdiff < 0 ||
- video_qdiff > 31) {
- fprintf(stderr, "qdiff must be >= 1 and <= 31\n");
- av_exit(1);
- }
-}
-
static void opt_strict(const char *arg)
{
strict= atoi(arg);
top_field_first= atoi(arg);
}
-static void opt_thread_count(const char *arg)
+static int opt_thread_count(const char *opt, const char *arg)
{
- thread_count= atoi(arg);
+ thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
#if !defined(HAVE_THREADS)
if (verbose >= 0)
fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
#endif
+ return 0;
}
static int opt_audio_rate(const char *opt, const char *arg)
return codec->id;
}
+static void set_context_opts(void *ctx, void *opts_ctx, int flags)
+{
+ int i;
+ for(i=0; i<opt_name_count; i++){
+ char buf[256];
+ const AVOption *opt;
+ const char *str= av_get_string(opts_ctx, opt_names[i], &opt, buf, sizeof(buf));
+ /* if an option with name opt_names[i] is present in opts_ctx then str is non-NULL */
+ if(str && ((opt->flags & flags) == flags))
+ av_set_string2(ctx, opt_names[i], str, 1);
+ }
+}
+
static void opt_input_file(const char *filename)
{
AVFormatContext *ic;
filename = "pipe:";
using_stdin |= !strncmp(filename, "pipe:", 5) ||
- !strcmp( filename, "/dev/stdin" );
+ !strcmp(filename, "/dev/stdin");
/* get default parameters from command line */
ic = av_alloc_format_context();
if(pgmyuv_compatibility_hack)
ap->video_codec_id= CODEC_ID_PGMYUV;
- for(i=0; i<opt_name_count; i++){
- char buf[256];
- const AVOption *opt;
- const char *str= av_get_string(avformat_opts, opt_names[i], &opt, buf, sizeof(buf));
- if(str && (opt->flags & AV_OPT_FLAG_DECODING_PARAM))
- av_set_string(ic, opt_names[i], str);
- }
+ set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM);
ic->video_codec_id = find_codec_or_die(video_codec_name , CODEC_TYPE_VIDEO , 0);
ic->audio_codec_id = find_codec_or_die(audio_codec_name , CODEC_TYPE_AUDIO , 0);
/* update the current parameters so that they match the one of the input stream */
for(i=0;i<ic->nb_streams;i++) {
- int j;
AVCodecContext *enc = ic->streams[i]->codec;
if(thread_count>1)
avcodec_thread_init(enc, thread_count);
enc->thread_count= thread_count;
switch(enc->codec_type) {
case CODEC_TYPE_AUDIO:
- for(j=0; j<opt_name_count; j++){
- char buf[256];
- const AVOption *opt;
- const char *str= av_get_string(avctx_opts[CODEC_TYPE_AUDIO], opt_names[j], &opt, buf, sizeof(buf));
- if(str && (opt->flags & AV_OPT_FLAG_AUDIO_PARAM) && (opt->flags & AV_OPT_FLAG_DECODING_PARAM))
- av_set_string(enc, opt_names[j], str);
- }
+ set_context_opts(enc, avctx_opts[CODEC_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM);
//fprintf(stderr, "\nInput Audio channels: %d", enc->channels);
audio_channels = enc->channels;
audio_sample_rate = enc->sample_rate;
ic->streams[i]->discard= AVDISCARD_ALL;
break;
case CODEC_TYPE_VIDEO:
- for(j=0; j<opt_name_count; j++){
- char buf[256];
- const AVOption *opt;
- const char *str= av_get_string(avctx_opts[CODEC_TYPE_VIDEO], opt_names[j], &opt, buf, sizeof(buf));
- if(str && (opt->flags & AV_OPT_FLAG_VIDEO_PARAM) && (opt->flags & AV_OPT_FLAG_DECODING_PARAM))
- av_set_string(enc, opt_names[j], str);
- }
+ set_context_opts(enc, avctx_opts[CODEC_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM);
frame_height = enc->height;
frame_width = enc->width;
frame_aspect_ratio = av_q2d(enc->sample_aspect_ratio) * enc->width / enc->height;
video_enc->codec_id = codec_id;
codec = avcodec_find_encoder(codec_id);
- for(i=0; i<opt_name_count; i++){
- char buf[256];
- const AVOption *opt;
- const char *str= av_get_string(avctx_opts[CODEC_TYPE_VIDEO], opt_names[i], &opt, buf, sizeof(buf));
- if(str && (opt->flags & AV_OPT_FLAG_VIDEO_PARAM) && (opt->flags & AV_OPT_FLAG_ENCODING_PARAM))
- av_set_string(video_enc, opt_names[i], str);
- }
+ set_context_opts(video_enc, avctx_opts[CODEC_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM);
video_enc->time_base.den = fps.num;
video_enc->time_base.num = fps.den;
if(inter_matrix)
video_enc->inter_matrix = inter_matrix;
- video_enc->max_qdiff = video_qdiff;
video_enc->thread_count = thread_count;
p= video_rc_override_string;
for(i=0; p; i++){
{
AVStream *st;
AVCodecContext *audio_enc;
- int codec_id, i;
+ int codec_id;
st = av_new_stream(oc, oc->nb_streams);
if (!st) {
} else {
codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, CODEC_TYPE_AUDIO);
- for(i=0; i<opt_name_count; i++){
- char buf[256];
- const AVOption *opt;
- const char *str= av_get_string(avctx_opts[CODEC_TYPE_AUDIO], opt_names[i], &opt, buf, sizeof(buf));
- if(str && (opt->flags & AV_OPT_FLAG_AUDIO_PARAM) && (opt->flags & AV_OPT_FLAG_ENCODING_PARAM))
- av_set_string(audio_enc, opt_names[i], str);
- }
+ set_context_opts(audio_enc, avctx_opts[CODEC_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM);
if (audio_codec_name)
codec_id = find_codec_or_die(audio_codec_name, CODEC_TYPE_AUDIO, 1);
{
AVStream *st;
AVCodecContext *subtitle_enc;
- int i;
st = av_new_stream(oc, oc->nb_streams);
if (!st) {
if (subtitle_stream_copy) {
st->stream_copy = 1;
} else {
- for(i=0; i<opt_name_count; i++){
- char buf[256];
- const AVOption *opt;
- const char *str= av_get_string(avctx_opts[CODEC_TYPE_SUBTITLE], opt_names[i], &opt, buf, sizeof(buf));
- if(str && (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) && (opt->flags & AV_OPT_FLAG_ENCODING_PARAM))
- av_set_string(subtitle_enc, opt_names[i], str);
- }
+ set_context_opts(avctx_opts[CODEC_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM);
subtitle_enc->codec_id = find_codec_or_die(subtitle_codec_name, CODEC_TYPE_SUBTITLE, 1);
}
{
AVFormatContext *oc;
int use_video, use_audio, use_subtitle;
- int input_has_video, input_has_audio, input_has_subtitle, i;
+ int input_has_video, input_has_audio, input_has_subtitle;
AVFormatParameters params, *ap = ¶ms;
if (!strcmp(filename, "-"))
av_strstart(filename, "http:", NULL)) {
/* special case for files sent to ffserver: we get the stream
parameters from ffserver */
- if (read_ffserver_streams(oc, filename) < 0) {
- fprintf(stderr, "Could not read stream parameters from '%s'\n", filename);
+ int err = read_ffserver_streams(oc, filename);
+ if (err < 0) {
+ print_error(filename, err);
av_exit(1);
}
} else {
if (url_exist(filename)) {
int c;
- if ( !using_stdin ) {
+ if (!using_stdin) {
fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
fflush(stderr);
c = getchar();
fprintf(stderr, "Not overwriting - exiting\n");
av_exit(1);
}
- }
- else {
+ }
+ else {
fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
av_exit(1);
- }
+ }
}
}
oc->max_delay= (int)(mux_max_delay*AV_TIME_BASE);
oc->loop_output = loop_output;
- for(i=0; i<opt_name_count; i++){
- char buf[256];
- const AVOption *opt;
- const char *str= av_get_string(avformat_opts, opt_names[i], &opt, buf, sizeof(buf));
- if(str && (opt->flags & AV_OPT_FLAG_ENCODING_PARAM))
- av_set_string(oc, opt_names[i], str);
- }
+ set_context_opts(oc, avformat_opts, AV_OPT_FLAG_ENCODING_PARAM);
/* reset some options */
file_oformat = NULL;
"Hyper fast Audio and Video encoder\n");
printf("\n");
show_help_options(options, "Main options:\n",
- OPT_EXPERT | OPT_AUDIO | OPT_VIDEO, 0);
+ OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE | OPT_GRAB, 0);
+ show_help_options(options, "\nAdvanced options:\n",
+ OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE | OPT_GRAB,
+ OPT_EXPERT);
show_help_options(options, "\nVideo options:\n",
OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
OPT_VIDEO);
show_help_options(options, "\nAudio/Video grab options:\n",
OPT_GRAB,
OPT_GRAB);
- show_help_options(options, "\nAdvanced options:\n",
- OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
- OPT_EXPERT);
+ printf("\n");
av_opt_show(avctx_opts[0], NULL);
+ printf("\n");
av_opt_show(avformat_opts, NULL);
+ printf("\n");
av_opt_show(sws_opts, NULL);
}
return 0;
}
+static int opt_preset(const char *opt, const char *arg)
+{
+ FILE *f=NULL;
+ char tmp[1000], tmp2[1000];
+ int i;
+ const char *base[3]= { getenv("HOME"),
+ "/usr/local/share",
+ "/usr/share",
+ };
+
+ for(i=!base[0]; i<3 && !f; i++){
+ snprintf(tmp, sizeof(tmp), "%s/%sffmpeg/%s.ffpreset", base[i], i ? "" : ".", arg);
+ f= fopen(tmp, "r");
+ if(!f){
+ char *codec_name= *opt == 'v' ? video_codec_name :
+ *opt == 'a' ? audio_codec_name :
+ subtitle_codec_name;
+ snprintf(tmp, sizeof(tmp), "%s/%sffmpeg/%s-%s.ffpreset", base[i], i ? "" : ".", codec_name, arg);
+ f= fopen(tmp, "r");
+ }
+ }
+
+ if(!f){
+ fprintf(stderr, "Preset file not found\n");
+ av_exit(1);
+ }
+
+ while(!feof(f)){
+ int e= fscanf(f, "%999[^=]=%999[^\n]\n", tmp, tmp2);
+ if(e!=2){
+ fprintf(stderr, "Preset file invalid\n");
+ av_exit(1);
+ }
+ if(!strcmp(tmp, "acodec")){
+ opt_audio_codec(tmp2);
+ }else if(!strcmp(tmp, "vcodec")){
+ opt_video_codec(tmp2);
+ }else if(!strcmp(tmp, "scodec")){
+ opt_subtitle_codec(tmp2);
+ }else
+ opt_default(tmp, tmp2);
+ }
+
+ fclose(f);
+
+ return 0;
+}
+
static const OptionDef options[] = {
/* main options */
{ "L", OPT_EXIT, {(void*)show_license}, "show license" },
{ "comment", HAS_ARG | OPT_STRING, {(void*)&str_comment}, "set the comment", "string" },
{ "genre", HAS_ARG | OPT_STRING, {(void*)&str_genre}, "set the genre", "string" },
{ "album", HAS_ARG | OPT_STRING, {(void*)&str_album}, "set the album", "string" },
+ { "dframes", OPT_INT | HAS_ARG, {(void*)&max_frames[CODEC_TYPE_DATA]}, "set the number of data frames to record", "number" },
{ "benchmark", OPT_BOOL | OPT_EXPERT, {(void*)&do_benchmark},
"add timings for benchmarking" },
{ "dump", OPT_BOOL | OPT_EXPERT, {(void*)&do_pkt_dump},
{ "loop_output", HAS_ARG | OPT_INT | OPT_EXPERT, {(void*)&loop_output}, "number of times to loop output in formats that support looping (0 loops forever)", "" },
{ "v", HAS_ARG | OPT_FUNC2, {(void*)opt_verbose}, "set the logging verbosity level", "number" },
{ "target", HAS_ARG, {(void*)opt_target}, "specify target file type (\"vcd\", \"svcd\", \"dvd\", \"dv\", \"dv50\", \"pal-vcd\", \"ntsc-svcd\", ...)", "type" },
- { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
+ { "threads", OPT_FUNC2 | HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
{ "vsync", HAS_ARG | OPT_INT | OPT_EXPERT, {(void*)&video_sync_method}, "video sync method", "" },
{ "async", HAS_ARG | OPT_INT | OPT_EXPERT, {(void*)&audio_sync_method}, "audio sync method", "" },
{ "adrift_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT, {(void*)&audio_drift_threshold}, "audio drift threshold", "threshold" },
{ "b", OPT_FUNC2 | HAS_ARG | OPT_VIDEO, {(void*)opt_bitrate}, "set bitrate (in bits/s)", "bitrate" },
{ "vb", OPT_FUNC2 | HAS_ARG | OPT_VIDEO, {(void*)opt_bitrate}, "set bitrate (in bits/s)", "bitrate" },
{ "vframes", OPT_INT | HAS_ARG | OPT_VIDEO, {(void*)&max_frames[CODEC_TYPE_VIDEO]}, "set the number of video frames to record", "number" },
- { "dframes", OPT_INT | HAS_ARG, {(void*)&max_frames[CODEC_TYPE_DATA]}, "set the number of data frames to record", "number" },
{ "r", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_rate}, "set frame rate (Hz value, fraction or abbreviation)", "rate" },
{ "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
{ "aspect", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_aspect_ratio}, "set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)", "aspect" },
{ "vn", OPT_BOOL | OPT_VIDEO, {(void*)&video_disable}, "disable video" },
{ "vdt", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&video_discard}, "discard threshold", "n" },
{ "qscale", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_qscale}, "use fixed video quantizer scale (VBR)", "q" },
- { "qdiff", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_qdiff}, "max difference between the quantizer scale (VBR)", "q" },
{ "rc_override", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_video_rc_override_string}, "rate control override for specific intervals", "override" },
{ "vcodec", HAS_ARG | OPT_VIDEO, {(void*)opt_video_codec}, "force video codec ('copy' to copy stream)", "codec" },
{ "me_threshold", HAS_ARG | OPT_FUNC2 | OPT_EXPERT | OPT_VIDEO, {(void*)opt_me_threshold}, "motion estimaton threshold", "threshold" },
{ "vbsf", OPT_FUNC2 | HAS_ARG | OPT_VIDEO | OPT_EXPERT, {(void*)opt_bsf}, "", "bitstream_filter" },
{ "sbsf", OPT_FUNC2 | HAS_ARG | OPT_SUBTITLE | OPT_EXPERT, {(void*)opt_bsf}, "", "bitstream_filter" },
+ { "apre", OPT_FUNC2 | HAS_ARG | OPT_AUDIO | OPT_EXPERT, {(void*)opt_preset}, "", "preset" },
+ { "vpre", OPT_FUNC2 | HAS_ARG | OPT_VIDEO | OPT_EXPERT, {(void*)opt_preset}, "", "preset" },
+ { "spre", OPT_FUNC2 | HAS_ARG | OPT_SUBTITLE | OPT_EXPERT, {(void*)opt_preset}, "", "preset" },
+
{ "default", OPT_FUNC2 | HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
{ NULL, },
};
avdevice_register_all();
av_register_all();
+ if(isatty(STDIN_FILENO))
+ url_set_interrupt_cb(decode_interrupt_cb);
+
for(i=0; i<CODEC_TYPE_NB; i++){
avctx_opts[i]= avcodec_alloc_context2(i);
}