The current code may have a bug. If users set the audio bit rate to
a non-supported value, such as 1000,
Firefox will display an error in the console,
while Chrome will create the recorded audio file successfully,
but it will have no sound. I tested this on Ubuntu 24.04.
The minimum bit rate threshold varies depending on the audio format.
During my tests with Firefox version 131.0.3, which uses
the audio/Ogg format, I found that the minimum supported value
is 24000. In Chrome 129.0.6668.70, which uses the audio/MP4 format,
the minimum supported value is 2400.
Due to these differences, I decided to change the input from
a text field to a select field, offering options that support both
Ogg and MP4 audio formats.
The database conversion for the old value has been provided in
the lib/db/upgrade.php. The script will find the closest match to
the current data and update it accordingly.
From my experimentation I have discovered that Safari does not properly
respect the standard MediaRecorder mimetype. Instead of using `codecs=`
it uses `codecs:`.
This change copies the codec array to have the list of possible codecs
include both codecs= and codecs: whilst remaining in order.
Jun Pataleta