generic-library/ffmpeg
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ffmpeg: better timebase guessing for stream copy

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-07-25 20:48:55 +02:00
parent 158eb8599a
commit 981f6fc988
1 changed files with 17 additions and 7 deletions

24
ffmpeg.c

@ -2237,13 +2237,23 @@ static int transcode(AVFormatContext **output_files,
goto fail;
memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
codec->extradata_size= icodec->extradata_size;
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;
av_reduce(&codec->time_base.num, &codec->time_base.den,
codec->time_base.num, codec->time_base.den, INT_MAX);
}else
codec->time_base = ist->st->time_base;
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){
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)) {
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;
}
}
av_reduce(&codec->time_base.num, &codec->time_base.den,
codec->time_base.num, codec->time_base.den, INT_MAX);
switch(codec->codec_type) {
case AVMEDIA_TYPE_AUDIO:
if(audio_volume != 256) {