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! _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
