Ubuntu 18.04 screen recording with audio

screen-capture-notes

# Notes based on ffmpeg documentation: https://trac.ffmpeg.org/wiki/Capture/Desktop and general googling 
# These settings work on Ubuntu 18.04 with rode podcaster usb microphone. 

# Show screen information
xdpyinfo

# List audio capture devices
 arecord -l

# Check device information (external usb mic in this case)
arecord --dump-hw-params -D hw:1,0

# Test that audio works with arecord
arecord -D hw:1,0 -f S24_3LE test.wav

# Record audio with ffmmpeg
ffmpeg -f alsa -acodec pcm_s24le -ac 1 -ar 44100 -i hw:1,0 test.wav

# Record full screen on 2560x1440 resolution
ffmpeg -video_size 2560x1440 -draw_mouse 0 -show_region 1 -framerate 25 -f x11grab -i :0.0 test.mp4

# Record full screen on 2560x1440 resolution and audio 
ffmpeg -video_size 2560x1440 -draw_mouse 0 -show_region 1 -framerate 25 -f x11grab -i :0.0 -f alsa -acodec pcm_s24le -ac 1 -ar 44100 -i hw:1,0 out.flv