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akx/screen-recrop-ffmpeg.sh

Created March 4, 2020 13:09
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screen-recrop-ffmpeg.sh
ffmpeg \
-video_size 1200x400 \
-framerate 30 \
-f x11grab \
-i :0.0+0,0 \
-pix_fmt yuv420p \
-filter_complex "
color=size=800x800:c=black [base];
[0:v] setpts=PTS-STARTPTS, crop=w=800:h=400:x=0:y=0 [row1];
[0:v] setpts=PTS-STARTPTS, crop=w=400:h=400:x=800:y=0 [row2];
[base][row1] overlay=shortest=1:x=0:y=0 [tmp1];
[tmp1][row2] overlay=shortest=1:x=0:y=400
" \
-f sdl "SDL"
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