[FFmpeg-user] MP3 enconding bitrate

Carl Eugen Hoyos cehoyos at ag.or.at
Tue Oct 28 11:55:40 CET 2014


On Monday 27 October 2014 08:36:37 pm Paulo Fidalgo wrote:
> On 27/10/14 00:04, Carl Eugen Hoyos wrote:
> > Paulo Fidalgo <paulo.fidalgo.pt <at> gmail.com> writes:
> >> After making another test with lame and ffmpeg
> >
> > Please test the following:
> >
> > $ lame -V 0 -q 0 2L38_01_96kHz.wav 2L38_01_96kHz-lame-V0.mp3
> > $ ffmpeg -i 2L38_01_96kHz.wav -compression_level 1 -q:0 0 out.mp3
>
> The file created by lame works, although the ffmpeg don't.

Hmm.
Is the problem related at all to "-q:0" or is it also reproducible 
if you specify a bitrate (or neither bitrate nor quality)?

> If there's something I can do to further investigate please let me know.

You could ask Volvo again (as said, the bitrate is not >320 for any frame) 
but I wonder now if you shouldn't just use -write_xing 0 or -id3v2_version 3.

Carl Eugen


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