Hi,

I would like to ask, how can I convert the PNG output files of gnuplot to
YUV using pipelining.
From the gnuplot  program I am able pass
PBM files directly to the pipe:

set term pbm color medium size 640,480
set output '| ppmtoy4m  -S 420mpeg2 | mpeg2enc -o video.mpeg"

The PBM support of gnuplot is very poor, so I would like to prefer png
output.
Unfortunately, png2yuv does not support pipelining.
Is there any solution? I dont want to save all my files to separate pngs.
Thank you

Zoltan Kuscsik
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