Open rbrisita opened 2 years ago
OPUS is specifically created for voice and is said to compress smaller than MP3 (lame). More research and recording to these formats has to be done with real world testing.
Issues with AMR: http://ritzinmobileworld.blogspot.com/2017/03/amr-vs-opus-aac.html
There are two things you're optimizing for here, size on disk, but also ability how much CPU is required to encode/decode. The needs will depend on architecture.
These measurements can be made with "full-fat" ffmpeg.
It might also make sense to use, say a Chrome native format (VP8/VP9?), if there is support for recording from a browser direct to disk.
Different formats have different compressions and uses.