add nested proxy path, rework perpetual session load/save strategy, build cleanups

[goodguy/cinelerra.git] / cinelerra-5.1 / ffmpeg / video / pgmyuv.pgmyuv

image2 pgmyuv
# this codec creates a set of image files in a directory
# use an image2 file name like /dir/p%05d.pgmyuv