[FFmpeg-user] Bug in FFMPEG Alsa?

[Carl Eugen Hoyos]

2017-02-17 12:50 GMT+01:00 Erik Dobberkau <erik.dobberkau at gmail.com>:
>> > I would also suggest using -acodec pcm_s16le (and maybe -ac 1 when using
>> a
>> > mono microphone) as well as -ar 48000 (or 44100) and checking the results
>> > thereof.
>>
>> Please don't!
>> Using -acodec pcm_s16le is not doing what you expect, just remove
>> all options.
>>
>> Carl Eugen
>>
>
> Oh, good to know. Does this only apply to alsa and/or other non-file input,
> or in general?

It applies in general, for alsa it should select the alsa format
but since there was an issue reported I suggest to test with
default options.

Next step will be to copy the options used for arecord.

Carl Eugen