Is there a way to determine absolute time from a VOB packet?

[elbonian]

I have a VOB which I have de-muxed into single packets. Each packet has all the original info about Stream-ID, SCR, Mux rate and so on. So in a way I have really not de-muxed it, I have merely split the file per packet.

Is there any formula that I can apply to a single packet to determine its "realtime"?

For example:
I have split the VOB file into pk1.video pk1.audio, pk2.video pk3.audio and so on
Each packet is a well-formed MPEG packet including its original SCR and other data
I would like to pick a random AC3 packet (say pk22.audio) and be able to tell that this packet is played at 01:23:22. or pick a random video packet and tell that it plays at 00:45:55

Alternatively, any method to look at a large VOB file and be able to determine a packet actual playback time would be nice.

On the same topic, is there a quick way to determine the actual playlength of a VOB file by looking at its headers?

I would be grateful for any information or suggestion to help me crack this problem.


Regards
Elbo

[SLK001]

You have to count the PICTURE HEADERS (00 00 01 00)(hex values), then multiply each by 0.0333667 seconds, PLUS you have to account for PULLDOWN and DROP_FRAME flags. There is no absolute timing info in MPEG2 files.