[FFmpeg-user] ffmpeg binary audio error

[Mahmoud Elgohary]

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

Teqnia-Tech


Mobile:+2 0100 6395 340

Email : mailto:Mahmoud.Elgohary at edusofteg.com

Website :

Address:  57A Intersection of 10 St with Demashk St El Maadi, Cairo Governorate, Egypt