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Set blkalign to maximum framesize to allow playback on WMP (see issue 2455 and issue 2446).

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Originally committed as revision 26167 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Carl Eugen Hoyos 2010-12-30 14:21:14 +00:00
parent b3f5c21a91
commit f6bf6e511d
1 changed files with 4 additions and 0 deletions
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4
libavformat/riff.c
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@ -373,6 +373,10 @@ int ff_put_wav_header(ByteIOContext *pb, AVCodecContext *enc)
if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_AC3) {
blkalign = enc->frame_size; //this is wrong, but it seems many demuxers do not work if this is set correctly
//blkalign = 144 * enc->bit_rate/enc->sample_rate;
//For high bitrate AC-3, set blkalign to maximum bytes per frame value
//to allow playback on WMP and MPlayer
if (enc->bit_rate > 384000)
blkalign = 3840;
} else if (enc->codec_id == CODEC_ID_ADPCM_G726) { //
blkalign = 1;
} else if (enc->block_align != 0) { /* specified by the codec */