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Old 24th March 2003, 05:41   #1  |  Link
TheUnforgiven
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Inside a D2V File

i can see something like

7 0 1049 2 3 0 1 2 3 0 1 2 3 0 1 2 3
7 0 112D 0 1 2 3 0 1 2 3 0 1 2 3 0 1
7 0 120B 2 3 0 1 2 3 0 1 2 3 0 1 2 3
7 0 12E0 0 1 2 3 0 1 2 3 0 1 2 3 0 1
7 0 13BB 2 3 0 1 2 3 0 1 2 3 0 1 2 2
7 0 14A7 2 2 2 2 2 2 2 2 2 2 2 2 2 2

what do these numbers mean?
can i know if the movie is PAL, NTSC, Film, Hybrid from the the d2v file?
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Old 24th March 2003, 10:31   #2  |  Link
Nic
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You know better than this unforgiven This question could be answered with a search, especially in the dev forum

The first number is always 7 (meaning the start of an I frame). The next number is the number of the file (i.e. it will start with 0 and go up with every file). the next is a sector offset (multiply it by 2048 to get the file position its referencing (its referencing the GOP/I-Frame). then the other numbers will always be 0-3. These are made from the repeat-first-field-flag and top-field-first-flag by this equation:

trf = (tff << 1) + rff

trf is the number outputted.

A overly simple answer to your question is, if its all "2"s then its almost definitely PAL But its probably best to rely on the framerate number to determine the type.

Cheers,
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Old 24th March 2003, 14:37   #3  |  Link
TheUnforgiven
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u r always my reference Nic
and believe me its not easy to find this info.
thanx a lot.
back to search-read cycle.
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Old 24th March 2003, 14:53   #4  |  Link
N_F
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Perhaps this may be of some use http://forum.doom9.org/showthread.php?s=&threadid=46499 (check neuron2's post)
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Old 24th March 2003, 15:42   #5  |  Link
TheUnforgiven
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yeah but i've read it before
thank u
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Old 24th March 2003, 15:52   #6  |  Link
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Interesting: I'll try to work this into the DVD2AVI FAQ in one way or another.

[EDIT] Done [/edit]
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Old 24th March 2003, 19:25   #7  |  Link
trbarry
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Quote:
A overly simple answer to your question is, if its all "2"s then its almost definitely PAL But its probably best to rely on the framerate number to determine the type.
Not that anyone is likely to confuse them, but 1080i HDTV video is also often all 2's. And sadly this may also be true if it was film source since they don't often seem to bother flagging it correctly.

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