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Probably because TV and CRTs scanned from the top left. Video cards store the screen buffer in this order, too, so scan-out from the screen buffer in left-to-right, top-to-bottom reads sequentially increasing memory addresses. Addressing video RAM as a 2-dimensional array extern int32_t screenbuf[480][640]; screenbuf[0][0] = RED; would modify the ...


The solution seems to be to use both a different video and audio encoder. This line works: FFmpeg/ffmpeg -video_size 1024x768 -framerate 25 -f x11grab -i :0.0+0,0 -f alsa -ac 2 -i pulse -acodec aac -strict experimental output.flv I couldn't get it to work without -acodec aac -strict experimental, contrary to the HOWTO on ffmpeg wiki. The error message ...

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