[FFmpeg-user] ffmpeg binary audio error

Mahmoud Elgohary mahmoud.elgohary at teqnia-tech.com
Mon Nov 15 22:11:59 EET 2021

Hi every one,

I'm try to use ffmpeg binary to record video from webcam and audio with this command 

ffmpeg -f alsa -ac 2 -i default -itsoffset '00:00:00.5' -f video4linux2 -s 320x240 -r 25 -i /dev/video0 'temp.mp4'"

but get this error

ALSA lib ../../src/conf.c:3725:(snd_config_hooks_call) Cannot open shared library libasound_module_conf_pulse.so (/usr/lib/alsa-lib/libasound_module_conf_pulse.so: cannot open shared object file: No such file or directory) ALSA lib ../../../src/pcm/pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM default [alsa @ 0x6342e00] cannot open audio device default (No such file or directory) default: Input/output error

also I user ffmpeg to run it and run , any advice

Mahmoud Elgohary

CEO, Founder Of Teqnia tech


Mobile:+2 0100 6395 340

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