[MPlayer-users] mjpeg playback solid green
Steven M. Schultz
sms at 2BSD.COM
Mon Sep 5 01:47:01 CEST 2005
On Sun, 4 Sep 2005, Kichigai Mentat wrote:
> > On an OSX 10.4.2 system when I play back a MJPEG-A file all that
> > appears is a window of solid (bright/lime) green.
> Well, you're not alone here. I've had the same problem, but there
> could be differences between our cases. Where did you get this video
> from? Is it possible we could have a sample?
Friend in Austria sent it to me (as some PAL MJPG test data).
But it's easy to create/generate a file. I believe ffmpeg can encode
to mjpeg. If you have mjpegtools (and y4mscaler) available then
y4mcolorbars -S 444 -n 75 -W 720 -H 576 -F 25:1 -A 59:54 -I t | \
y4mscaler -O chromass=422 | \
yuv2lav -f a -b 512 -I 1 -q 90 -o cbars.avi
will generate a MJPEG file with 3 seconds of colorbars. Playing
that back with mplayer gives the same bright green (with a bit of
corruption on the last couple lines) screen.
I could upload the 'cbars.avi' file if it's needed (about 2MB) - where
would be a good place to put it?
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