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Capture/ALSA – FFmpeg
https://trac.ffmpeg.org/wiki/Capture/ALSA
No Audio recorded with FFMPEG ALSA Loopback - Stack …
https://stackoverflow.com/questions/53870226/no-audio-recorded-with-ffmpeg-alsa-loopback
I am trying to record screen with audio. I played an mp4 file with audio and video in browser and I tried the command specified here, and tried to save output to mp4 as well as mkv files. But the screen records with no audio. I have installed Alsa loopback with. sudo apt-get install linux-image-extra-virtual. modprobe snd-aloop.
Screen capture WITH audio in ffmpeg - Stack Overflow
https://stackoverflow.com/questions/29478548/screen-capture-with-audio-in-ffmpeg
I am able to record audio perfectly fine with the command: FFmpeg/ffmpeg -f alsa -ac 2 -i pulse -- output.wav. However, when I try both screen capture and audio, like this: FFmpeg/ffmpeg -video_size 800x600 -framerate 25 -ac 2 -f x11grab -i :0.0+0,0 -ac 2 -f alsa -i pulse -ac 2 -acodec copy output.mpeg -ac 2.
alsa - ffmpeg record video tape with audio - Unix & Linux ...
https://unix.stackexchange.com/questions/566223/ffmpeg-record-video-tape-with-audio
I'm trying to record video tapes to digital, using this command: ffmpeg -f v4l2 -video_size 720x480 -i /dev/video2 -channel_layout stereo -f alsa -i hw:1,0 -c:v libx264 -pix_fmt yuv420p -b:v 2M -crf 23 -c:a aac -b:a 128K -to 00:00:30 -preset fast -report tape1.mkv. I …
Audio Capture with FFmpeg (ALSA) - YouTube
https://www.youtube.com/watch?v=cObC-nNUIwI
A quick tutorial on how to capture audio from an ALSA device, such as a microphone, using FFmpeg. I forgot to mention in the video that a version of FFmpeg c...
pulseaudio - ALSA Loopback not recording system audio on ...
https://unix.stackexchange.com/questions/550207/alsa-loopback-not-recording-system-audio-on-xubuntu-18-04-in-ffmpeg-command
On those two operating systems, the following works to record system audio and from my microphone. pacmd set-default-source alsa_output.pci-0000_00_14.2.analog-stereo.monitor ffmpeg \ -thread_queue_size 4096 -f alsa -ac 1 -ar 48000 -i default \ -thread_queue_size 4096 -f alsa -ac 1 -ar 48000 -i plughw:CARD=Device,DEV=0 \ -filter_complex amix=inputs=2 \ …
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