HI everyone
I think I must be doing something silly: every time I try to pipe the
output of either png2yuv or ppmtoy4m into mpeg2enc, mpeg2enc complains:
ERROR: [mpeg2enc] Could not read YUV4MPEG header: bad stream or frame
header!
Command lines:
png2yuv -f 25 -I b -n 1 -L 1 -j foo.png | \
mpeg2enc -f 8 -o output.mpg silence.m2a
pngtopnm foo.png | ppmtoy4m -n 1 -F 25:1 -I b -A 59:54 -L | \
mpeg2enc -f 8 -o output.mpg silence.m2a
The size of foo.png is 720x576. As far as I can tell this *should* work,
but it doesn't seem to. I'm using an mjpegtools CVS snapshot from 1 Feb
2005.
The problem appears to be in the output from png2yuv and ppmtoy4m
since both programs appear to be reporting successful completion.
There are numerous references out there which indicate the above should
work. Any ideas as to what I'm doing wrong?
Regards
jonathan
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