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Read y4m, select rectangular regions and write them to multiple y4m pipes.
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.gitignore
Makefile
README
yuv4mpeg_regions.c

README

Simple program that reads one yuv4mpeg input and writes to multiple yuv4mpeg pipes that correspond to some geometric rectangular region of video input.

Example: splitting video into two ones horizontally and playing both parts:

    mkfifo 0_0_426_480.yuv 427_0_426_480.yuv
    mplayer -really-quiet  -noconsolecontrols 0_0_426_480.yuv&
    mplayer -really-quiet  -noconsolecontrols 427_0_426_480.yuv&
    mplayer -really-quiet misc/big_buck_bunny_480p_stereo.avi -vo yuv4mpeg:file=/dev/stdout | ./yuv4mpegsplit 0_0_426_480.yuv 427_0_426_480.yuv
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