[FFmpeg-user] Bug in FFMPEG Alsa?

[christina zou]

To follow-up on my problems,

After a lot of experimenting, I've decided to use Sox for audio capture and
encoding.

The following line does PCM audio capture AND encoding to mp3 using <20%
CPU, so it's much more efficient than Ffmpeg on my Pi Zero.

rec --buffer 2000000 -c 1 -r 44100 -b 32 /tmp/temp.mp3 &

If anyone does have further ideas about what went wrong with Ffmpeg, do let
me know!