From 981f6fc988dc33e81566fdaf4087da3cfa3ddb04 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 25 Jul 2011 20:48:55 +0200 Subject: [PATCH] ffmpeg: better timebase guessing for stream copy Signed-off-by: Michael Niedermayer --- ffmpeg.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-) diff --git a/ffmpeg.c b/ffmpeg.c index fb72a3a5d1..5a1ab0f64d 100644 --- a/ffmpeg.c +++ b/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) {