4:3 - 16:9 automatically in v0.56

[Morien]

Hi,
I've come across a bug with some DVDs in DVD Rebuilder v0.56.
In particular, for those who have access to them, the DVDs are the region 4 PAL (Madman Entertainment) GTO volumes 3 and 4. I'm sure it does it with more but these two are the ones it happened to me with.

What happens is DVD Rebuilder sets in the IFO's to show some of the VTS's as 16:9, when in actuality they should be 4:3. It doesn't crop any of the picture as it would if LB 4:3 - 16:9 was selected, so it can be fixed in IFO Edit, HOWEVER, it also sets the secondary subtitle stream to direct to the first (eg. sub 1 should be 0x81, and is, but sub 2 should be 0x82 but is set to 0x81 also).
This, I cannot figure out how to fix.

For those who are having this problem, what I did to fix it was before the rebuild stage I would make sure the 'Aspect_Ratio=' line in the REBUILDER.INF had the right value for each part. This is problematic however as it gets tedious going through each chapter (?) to make sure it's correct. GTO had only 4:3 origially though so I just opened the REBUILDER.INF and did a full replace of that line.
Aspect_Ratio=3 makes it set to 16:9 and,
Aspect_Ratio=2 makes it set to 4:3.
(So I went Edit>Replace, Find: Aspect_Ratio=3, Replace with: Aspect_Ratio=2)

Hope this can be fixed, and hope this helps people.

Morien

[jdobbs]

I'll take a look at it and see if there might be some set of circumstances that incorrectly sets it... but that setting would also indicate the video was actually encoded at 16:9. Changing the IFO during rebuild would distort it back to 4:3 just because of the way DVD players work -- but you'd probably find that if you examined the VTSs that they are still 16:9. My guess is that you would also find that in the original -- as that's where the "Aspect_Ratio=" parameter is collected.

Interesting anomaly either way...

[Morien]

Hmm..
Well in the VTS list in DVD-RB it listed them all as 4:3, and the original played at 4:3 (I can only assume it was properly done in the IFO. The VOB played 4:3 and the DVD in the DVD-Rom and Standalones played at 4:3. I didn't check it in IFO Edit however and I don't have the DVDs with me at this time).
In any case, thanks for looking at it. Perhaps if it was a problem with the original DVD. Maybe the ability to edit the AR's per VTS in a future version could act as a workaround.

Thanks a lot for looking at it tho
Morien

[jdobbs]

It wouldn't help to check IFOEdit. It will show 4:3 also. You'd have to look at the stream using VOBEDIT. If the stream doesn't match the IFO, it would be incorrectly authored and has to be a one in a thousand thing -- not worth a special case. I've never seen it go backwards this way -- but I have seen DVDs that have been authored with SpruceUp go the other way (they are 4:3 streams that have 16:9 set in the IFO).