#8994: pulseaudio recording: alsa capture volume levels are automatically reset
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Reporter: cri | Type: defect
Status: new | Priority: normal
Component: ffmpeg | Version: unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug: when recording audio with `-f pulse` ffmpeg doesn't
respect the alsa capture volume levels previously set with alsamixer or
amixer.
How to reproduce:
{{{
amixer -c 0 set 'Capture' cap
amixer -c 0 set 'Capture' 20dB
amixer -c 0 set 'Internal Mic' cap
amixer -c 0 set 'Internal Mic Boost' 20dB
ffmpeg -f pulse -i alsa_input.pci-0000_00_1b.0.analog-stereo -ac 1 out.m4a
}}}
Expected result: ffmpeg should record audio using the volume levels I set
with `amixer`.
Actual result: ffmpeg automatically resets audio levels: 'Capture' to
100%, 'Internal Mic Boost' to 0%
ffmpeg version 4.1.6 (Debian 10 package)
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Ticket URL: <https://trac.ffmpeg.org/ticket/8994>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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