Reference frame end block pointers in VOBUs

[jsoto]

How can I re-calculate these pointers of a nav pack in a VOB in order to check if they are correct?.

(In fact, I don't understand the meaning of these pointers)

413 00c DSI_GI 0c vobu_1stref_ea 4 first reference frame end block, relative - used for fast playing
417 010 DSI_GI 10 vobu_2ndref_ea 4 second reference frame end block, relative - used for fast playing
41b 014 DSI_GI 14 vobu_3rdref_ea 4 third reference frame end block, relative - used for fast playing

jsoto

[2COOL]

This is really out of my league but I've found this during my search. Read pages 4 and 5 on reference frames.

http://www.eetasia.com/ARTICLES/1999JAN/1999JAN01_ID_DSP_MSD_EMS_TA.PDF

[jsoto]

Many thanks 2COOL!
Now, I understand the meaning, I probably I'll be able to manage them. (Seems I only have to parse the MPEG headers to find P and I pictures).

jsoto