MisterWebNet

Converting video to flv using FFMPEG and the output video kept coming out with no sound/audio. The error message said "lame: output buffer too small". The video played fine, but pretty useless without the sound. Apparently it's a well known problem with many advising reverting to Lame 3.98.

I got round it setting the -bufsize option. It won't work in every case but it's worth a try:

ffmpeg -i “C:\videos\videoname.mov” -ar 44100 -acodec copy -bufsize 10000 -f flv “C:\videos\videoname.flv”

Also if you are using the -an option, try just using the -f flag instead. When I switched from -an to -f I was able to remove the -bufsize flag altogether and the audio converted.