I am attempting to create mpg or avi movies directly from a window on my Ubuntu 12.04 LTS system. The display monitor is a 1920x1080p digital unit and the output from geomview of the rotating spherical polygon and unit sphere look 3d when viewing the monitor.
However when I use "avconv -f x11grab -b 500k -s vga -r 30 -i :0,0+738,98 out.mpg" to capture this window, the video capture ends up with poor quality, and has distracting jerky green rectangular blotches flashing in the movie. The video itself has poor definition, like viewing through frosted glass and slightly out of focus. If we know exactly where the frame buffer is, for the window (which xwininfo does provide) why cannot we get the exact video memory capture of this window?? What can I do to improve the video quality? It seems peculiar that using a digital display that such a poor quality mpg resulted. Is the video codec the problem? It wants to use the yuv420p video codec, not the bgra. I also rename the output file to out.mkv and that has improved the quality of the video capture, but it still is out of focus and moire effects are visible. Searching the avconv documentation about yuv420p doesn't turn up much. Thanks for your suggestions. Randall _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
