The new .asoundrc creates a 44.1 khz mp3 file wathever the input audio format is (this is a good news)
=> I have better to remove the Sampling Rate chooser in Asar
Changing VLC preference is not necessary IMHO
This method works with MPV too (mp3 or wav 44.1 khz), and also with Chromium for Youtube videos (48 khz)
So, the problems we were facing at the beginning are solved ! Well done !
However, there's a problem I didn't notice before but which is there since the beginning
This method records one file for each audio source as soon as it starts playing.
There is no convenient way to synchronise the multiple recorded files, except the "poor" filetime solution.
And this needs postprocessing. In that sense, the initial request of the subject is not solved ...
Who's an idea ?
Pi 4 with 4Gb memory, DVB TV pHAT ------------------- Desktop : Core i5 Linux MINT 19.3