#23 Playing Matrox Marvel 200 Mjpegs

[Anonymous]

I have a number of Mjpeg avi files recorded using the
windows based software that comes with a Matrox Marvel
card. I'm trying to use mjpeg tools to do some
transcoding of these to Mpeg2. However none of the
tools seem to be able to read the frames of these
files. Lavplay says "error playing a frame" for every
frame and displays a window with assorted color bars.
Similar results occur for the other utilities. The
output of lavinfo is below, you can see a warning
message about the JPEG format. For reference, these
files can be played back fine using either Quicktime 5
or the windows based Matrox video player.

++ WARN: [lavinfo] Input file favmistake.avi is not in
JPEG 4:2:2 or 4:2:0 format
video_frames=7622
video_width=704
video_height=480
video_inter=-1
video_norm=NTSC
video_fps=30.000000
video_sar_width=0
video_sar_height=0
max_frame_size=104512
MJPG_chroma=0
has_audio=1
audio_bps=4
audio_chans=2
audio_bits=16
audio_rate=44100
num_video_files=1

email address: adlere@attglobal.net

TIA,
Al

[Bernhard Praschinger]

Logged In: YES
user_id=155293

I'm not soure if AVI's recorded in the windows SW work with
the mjpegtools.

Please aske your question on the mjpeg-users list again, or
ask on the marvel.sourceforge.net/ page. They should be able
to help you with marvel related probelms better.