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Old 10th March 2012, 10:24   #1  |  Link
Dave1024
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DV timing information

hi,

Is there any timing information available with DV compressed frame data like MPEG-2 GOP header ?

Is it possible any VITC/ATC time information embedded in a frame along with Luma samples ?

Thanks
Dave
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Old 11th March 2012, 20:54   #2  |  Link
LoRd_MuldeR
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AFAIK, on the PC, DV streams are almost always stored in an AVI container.

And AVI is CFR (constant frame rate), which means AVI uses a fixed frame-rate, specified in the AVI Stream Header.

Therefore you don't need timing info, such as timestamps. The time index of the n-th frame simple is n * fps.
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Last edited by LoRd_MuldeR; 11th March 2012 at 23:47.
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Old 12th March 2012, 10:16   #3  |  Link
Gavino
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Quote:
Originally Posted by LoRd_MuldeR View Post
The time index of the n-th frame simple is n * fps.
You mean n / fps.
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Old 12th March 2012, 12:43   #4  |  Link
2Bdecided
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Quote:
Originally Posted by Dave1024 View Post
Is it possible any VITC/ATC time information embedded in a frame along with Luma samples ?
The recording date+time is usually preserved in the file. No idea how, but plenty of tools use it (e.g. to overlay date+time on video after capturing).

Cheers,
David.
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Old 14th March 2012, 19:04   #5  |  Link
Dave1024
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Hi,

Thanks for the replay's, i would like to explore the DV more. Which is the standard for explore the DV codec. ?
Is there any SMPTE 12 M timecode is compressed in DV codec.?
Is there any VBI lines is compressed in DV codec ?

Thanks
Dave
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Old 14th March 2012, 22:36   #6  |  Link
IanB
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This filter reveals the metadata in a DV stream, New Filter: DVInfo

This seems to be a version for the newer HDV format, HDVInfo v0.93
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Old 18th March 2012, 10:41   #7  |  Link
Dave1024
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Hi,

Is it possible to map VITC (vertical interval time code) to DV. Which are the parameters helps to detect this ?

Thanks
Dave
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Old 18th March 2012, 14:17   #8  |  Link
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I answered a very similar question in your other thread, but now you act as if you didn't read it or didn't understand it.
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