> 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 be higher. 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.) Moritz _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
