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avconv: allow '-async -1' to disable timestamp sync for audio encoding

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This will allow a workaround for cases where input timestamps are invalid or
when decoder delay of 1 packet or more confuses avconv into using the wrong
timestamps as a sync reference.
This commit is contained in:
Justin Ruggles 2012-04-08 15:00:01 -04:00
parent 679a973e97
commit b073819bc9
1 changed files with 2 additions and 2 deletions
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4
avconv.c
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@ -1101,7 +1101,7 @@ static void do_audio_out(AVFormatContext *s, OutputStream *ost,
ost->reformat_pair = MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
}
if (audio_sync_method) {
if (audio_sync_method > 0) {
double delta = get_sync_ipts(ost, ist->last_dts) * enc->sample_rate - ost->sync_opts -
av_fifo_size(ost->fifo) / (enc->channels * osize);
int idelta = delta * dec->sample_rate / enc->sample_rate;
@ -1148,7 +1148,7 @@ static void do_audio_out(AVFormatContext *s, OutputStream *ost,
av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
}
}
} else
} else if (audio_sync_method == 0)
ost->sync_opts = lrintf(get_sync_ipts(ost, ist->last_dts) * enc->sample_rate) -
av_fifo_size(ost->fifo) / (enc->channels * osize); // FIXME wrong