[FFmpeg-user] FFmpeg accuracy issues.

Roger Pack rogerdpack2 at gmail.com
Thu Aug 16 16:42:27 CEST 2012

> Actually, wait a bit on that. MP3s suffer from added encoder/decoder
> delays. LAME FAQ talks about it here:
> http://lame.sourceforge.net/tech-FAQ.txt
> So re-encoding an MP3 just keeps accumulating delays, so it's slowly
> getting longer. But three seconds (the first transcode) is a very
> large jump... the other ones are more consistent with LAME's delays.

Oops the 3 seconds one was a typo :)

Ok with .wav it seems to keep consistent timings.

However, using lame "straight" (lame.exe) results in the following timings:

lame1:  00:00:53.28
lame2:  00:00:53.28
lame3:  00:00:53.28

(and the files stay the same size, so maybe lame has fixed their
problem since then?)

This is using the same version of lame that ffmpeg is compiled with.
Any feedback?

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