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ff_parse_specific_params: do not use AVCodecContext.frame_size 

It will not be set unless the muxing codec context is also the encoding
context, which is discouraged. When the frame size is not known from
av_get_audio_frame_duration(), the fallback should still be good enough.
This commit is contained in:
Anton Khirnov 2014-12-30 07:51:04 +01:00
parent 1f008f34d5
commit 9f1eccb97b
1 changed files with 0 additions and 5 deletions
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5
libavformat/riffenc.c
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@ -212,12 +212,7 @@ void ff_parse_specific_params(AVStream *st, int *au_rate,
int gcd; int gcd;
int audio_frame_size; int audio_frame_size;
/* We use the known constant frame size for the codec if known, otherwise
* fall back on using AVCodecContext.frame_size, which is not as reliable
* for indicating packet duration. */
audio_frame_size = av_get_audio_frame_duration(codec, 0); audio_frame_size = av_get_audio_frame_duration(codec, 0);
if (!audio_frame_size)
audio_frame_size = codec->frame_size;
*au_ssize = codec->block_align; *au_ssize = codec->block_align;
if (audio_frame_size && codec->sample_rate) { if (audio_frame_size && codec->sample_rate) {