<none@nospam.123> wrote in message
news:b4gd21toa7qnv1vrvq9bbm5sjpclm9du08@4ax.com...
What do you mean by "incorrect GOP lengths"? Do you mean
the DVD standard, more than 18 frames for NTSC or 15 for
PAL? Do you have MPEG with oversized GOP that won't
play in your stand alone player? ( The standalone players are
much less sensitive to that than the PC players.)

There is no problem having a mix GOPs of different sizes.
There is no problem if they are smaller than the standard, all the
way down to the "I Frame" only variety.

So what problem are you having that you feel is related to
the length of your GOP?

Luck;
Ken

<none@nowhere.123> wrote in message
news:2qse2114soiepk49duvnlqi5pff6i66ian@4ax.com...
Actually TDA is one of the few Author programs that can work with
Oversized GOP, just ignore the warning message.

The TMPGEnc 3.0 Express Encoder has an extended MPEG2 format:

"XDVDs exceed the GOP limit of the DVD standard and is capable of
storing more than 60 frames in 1 GOP without ruining the clip. XDVD
pushes the MPEG standard to its limit. DVD player software tend to
emphasize speed than video quality. For this reason XDVDs can not
show its true potential. It is strongly advised to play XDVDs on a
consumer DVD player.

When authoring XDVDs with TMPGEnc DVD Author 1.5, a message
"The video GOP is too long" will show up but you may ignore this and
continue to author."

Luck;
Ken