The camcorder of JVC (Everio GZ-MG36EK and GZ-MS120) makes MOD files
for its movies
and beside this it generates a MOI (MOvie Information) file; one could
perhaps compare a MOI file with EXIF data in photographs.
On this forum a
discussion was held on the content of this MOI-file, and Karl Zeilhofer
made an attempt to reverse engineered the structure of the MOI file.
See his result at this
location.
Difference in coded video quality:
Video
Quality
on JVC
MOI Coding
0x00DA
1.5 Mbit/s VBR
0xE51A
4.2 Mbit/s VBR
0x5ADC
5.5
Mbit/s VBR
0x5ADC
8.5 Mbit/s VBR
0x542F
What is strange is that both 4.2 and 5.5 Mbit/s have the same video
quality coding (the audio quality is different of course). I had
expected that Event type would also be encoded in MOI-file, but that
seems not to happen. The 5.5 Mbit/s CBR and 8.5 Mbit/s CBR of
Karl Zeilhofer codings are different then mine (my camera does VBR
instead of CBR).
Panasonic camcorders (like SDR-S100 and SDR-H280) have
different codings for at least aspect ratio and video quality.
All these difference are programmed in MOIread. If you have other
codings let
me know.
I made a small compiled BASIC program (using BB4W) that will show some of the
information of a MOI file, it is called MOIread.exe
(right click and Save Link Target As...).
For this one does not need other software.
JVC Tool
There is also a java applet that can rename filenames called JVC tool, this
tool uses the above MOI file structure. For this you need to install
the JRE (java runtime
environment)
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