finding GOP header by opening a file in binary mode

[VBMizio]

Hi all,
I'm Maurizio and i like to program by Visual Basic 6.0.
I'm having a problem, and after a long searching, I'm trying to find
help here
I need to knon the byte position of GOPs in a mpeg2 file, and the
first idea was to open the file like a binary file, (or also with a
Hex editor, it's the same) and searching for every GOP header in the
file.
May it be a good solution?
If yes, how to find a GOP Header? Does the header start with a
sequence of fixed bytes?
For example, every time I found a sequence of 000001BA, I've got an
header... but.. what is the exact sequence?
After finding a GOP header, it's possible to read the timecode of that header? How?
Thank you in advance, and please excuse me for my bad english.

[VBMizio]

I fund what I need.
Thank you... Maurizio