How to loacate Sequence header and Private stream 1

[Bro]

Hi

I need to extract some info from the sequence header and Private Stream 1, but I don't know how to locate these.
I'm looking at mpucoders dvd info pages MPEG Headers Quick Reference (http://www.mpucoder.com/DVD/mpeghdrs.html) (needs registration) but can't find info about how to located these.

Thanks for any help with this.

[Dmitry Vergheles]

Hi Bro,

You need to know the sequence header start code and parse bitstream untill it occurs.

All the start codes are defined in the standard.

INFORMATION TECHNOLOGY -
GENERIC CODING OF MOVING PICTURES AND ASSOCIATED AUDIO
Recommendation H.262
ISO/IEC 13818-2

http://www.le-hacker.org/hacks/mpeg-drafts/is138182.pdf

Also you could have a look at MSSG decoder
http://www.mpeg.org/MPEG/MSSG/

Regards,
Dmitry

[Bro]

Hi

I guess I need to start out with the vobs then...right?
This means the info can't be read directly from the dvd but needs to be ripped first...
How often do private stream 1 and sequence header occur? and are they always the same?

Thanks for replying!