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Cannot get card index #1816

@ant1fr1z

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@ant1fr1z

Raspberry pi4, go2rtc version=1.9.9 platform=linux/arm64 revision=fa580c5,

config path=/etc/go2rtc.yaml
streams: mic: exec:ffmpeg -hide_banner -f alsa -channels 1 -ar 8000 -i hw:3,0 -c:a libopus -rtsp_transport tcp -f rtsp {output}

I get an error

[rtsp] error=streams: exec/rtsp
ALSA lib confmisc.c:165:(snd_config_get_card) Cannot get card index for 3
[alsa @ 0x559e93a4e0] cannot open audio device hw:3 (No such file or directory)
hw:3: Input/output error
stream=mic

sudo ffmpeg -channels 1 -ar 8000 -f alsa -i hw:3,0 -codec:a libopus "./audio.mkv"
works well, the sound is recorded

arecord -l

**** List of CAPTURE Hardware Devices ****
card 3: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0

help pls

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