[MEncoder-users] MPEG2 aspect 2 or 3

[TAJTHY Tamás]

Dear List,

Could anybody help me in this topic? I tried to browse but I could not
find any relevant information.

Running mencoder on an MPEG2 file it writes some information to the
screen. There is one line like:

„VIDEO:  MPEG2  720x576  (aspect 3)  25.000 fps  …"
... or ...
„VIDEO:  MPEG2  720x576  (aspect 2)  25.000 fps  …"

Can somebody explain what is the difference? Is it the DAR flag
(anamorph coding)? I suppouse aspect 3 can be the 16:9 DAR flag and
aspect 2 can be 4:3 DAR flag. Am I right? Did I misunderstood
something?

Thanx!