writing MXF on Win7-64

[Cory Albright]

I am playing around with writing various output formats on a Win7-64 bit 
machine and seem to have trouble writing a proper MXF file.

Here are samples that *are* working (output is playable from VLC):

# AVI
gst-launch videotestsrc num-buffers=1000 ! 
video/x-raw-yuv,width=640,height=480,framerate=25/1 ! ffmpegcolorspace ! 
ffenc_mpeg4 ! avimux ! filesink location=vidtest/test.avi

# OGG
gst-launch videotestsrc num-buffers=1000 ! 
video/x-raw-yuv,width=640,height=480,framerate=25/1 ! ffmpegcolorspace ! 
theoraenc ! oggmux ! filesink location=vidtest/test.ogv

# MP4  (both qtmux and mp4mux) both work
gst-launch videotestsrc num-buffers=1000 ! 
video/x-raw-rgb,width=640,height=480,framerate=25/1 ! ffmpegcolorspace ! 
ffenc_mpeg4 ! mp4mux ! filesink location=vidtest/test_mp4_mp4mux.mp4
gst-launch videotestsrc num-buffers=1000 ! 
video/x-raw-rgb,width=640,height=480,framerate=25/1 ! ffmpegcolorspace ! 
ffenc_mpeg4 ! qtmux ! filesink location=vidtest/test_mp4_qtmux.mp4



BUT, when I try to write an MXF file, the file is unplayable with VLC:

gst-launch videotestsrc num-buffers=1000 ! 
video/x-raw-yuv,width=640,height=480,framerate=25/1 ! ffmpegcolorspace ! 
ffenc_mpeg4 ! mxfmux ! filesink location=vidtest/test.mxf

Is there anything obviously wrong with my mxf test?  It writes a file, 
but it immediately crashes VLC.

Thanks for your help,

- Cory


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