YouTube screen capture with audio using FFmpeg

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Related: YouTube Live streaming with FFmpeg


YouTube screen capture with audio is simple, cross-platform and stable using nothing more than FFmpeg.

Get the easy-to-use Python script for YouTube FFmpeg screen capture with audio: ScreenCapture2disk.py.

python -m pip install pylivestream

ScreenCapture2disk my.avi

The following details are not normally needed–just use the easy Python script above

YouTube screen capture with audio

ffmpeg \
-video_size 1024x720 \
-framerate 10 \
-f x11grab -i :0.0+100,200 \
-f pulse -ac 2 -i default \
-c:a libmp3lame -ar 48000 \
out.mkv

audio config

-f pulse -ac 2 -i default
send stereo audio with the default PulseAudio device.

DO NOT USE -ac 1 even with monaural audio as you’ll get lots of errors like

non-monotonous DTS in output stream 0:1;

-c:a libmp3lame -ar 44100
encode audio as MP3 with a 44.1 kHz sampling frequency (passing audio up to about 22 kHz, which is CD-quality).

list PulseAudio devices

pactl list sources

control audio sources

pavucontrol

video config explained

-framerate 10 -f x11grab -i :0.0+0,0 screengrab at 10 fps, starting in the upper left hand corner, send a 1024x720 pixel video. If your screen resolution is more than 1024x720, there would be unsent regions at the bottom and/or right side.

Reference

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