[MPlayer-users] [Bug] MPlayer decoded aac stream has longer duration than original

Carl Eugen Hoyos cehoyos at ag.or.at
Sun Sep 20 04:25:47 CEST 2009

Zhou Zongyi <zhouzy <at> os.pku.edu.cn> writes:

> 1) Encode a wav file with NeroAacEnc or any other aac encoder.

So this is also reproducible with a file encoded with ffmpeg (acodec aac and/or
acodec faac)?

> 2) Decode the mp4/m4a file with mplayer by -ao pcm:file=out.wav
> out.wav has longer duration than the original wav file. By comparing the two
> PCM side by side,
> I found that a delay is added to beginning of the decoded wav file.

With -ac faad or -ac ffaac (or both)?
Is it also reproducible with FFmpeg decoding? If yes, it should be reported
there (http://ffmpeg.org/bugreports.html)

Carl Eugen

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