[FFmpeg-user] [mp2] how to encode high-pitch audio to mp2 file?
barsnick at gmx.net
Thu Sep 25 15:02:59 CEST 2014
> I analyzed mp2 made by ffmpeg. I found that sine wave whose frequency large
> than 14500HZ is eliminated.
> Is there any way to keep the high pitch audio in mp2 made by ffmpeg?
Have you tried building ffmpeg with libtwolame (./configure
--enable-libtwolame) and using it (-c:a libtwolame)? Especially playing
with the "psymodel" option. Perhaps its cut-off frequencies happen to
If you want to be able to configure the low-pass frequency, I reckon
patches to either implementation are welcome.
(The LAME mp3 encoder allows setting the filter frequency from the
command line, though I believe it's not exposed in ffmpeg's libmp3lame
encoder options either.)
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