exact chapter entrypoint?!

[Bubsy94]

How do I put the exact chapter entrypoint, when using VCDEasy on the "Chapter" section? Because when I enter the exact minutes and seconds, and click go, it gives me a different time entry on the chart. Why?!
Is there a way I could fix this? thanks.

[snowmoon]

You can only place entry points on I frames. If your GOP's are very huge you are at the whim of the encoder where your points will end up.

I believe TMPGenc may have an override option for placing I frames, you can use that to place I frames on entry points.

[Bubsy94]

Kind of confused here, what override option?!
And why can I place entrypoints only on the I frames?
Could there be a better solution for this?

[snowmoon]

You can only start on I frames becuase those are the "start" of a GOP ( Group of Pictures ), they are the only type of frame that can be decoded independant of the rest of the stream.

When TMPGenc is encoding it's going to build GOP's so that they are the most efficient use of space, so it may not place I frames where you need them. You can override this assumption ( I believe the same place you set the GOP pattern ) and manually assign I frames to where you want your entry point to be.

You didn't by chance use a non-standard template like kxvcd? or other with a really long GOP setting?

[Bubsy94]

It isn't my first time making different mpeg formats, but yes I am using my own setting for XVCD.
The thing is I just wanted to put the same chapter entrypoints to my XVCD, as it was from my DVD movie.

[Bubsy94]

Could I get in more depth about the GOP structure.
And in what way I have to use the GOP, to get chapter entrypoints I need.

[adam]

Get chapterxtractor and load the ifo for you movie. It will give you the times for each of your chapters as they are stored on the DVD. Click on the Format tab and pick one of the presets or make your own. In the spot labeled format: put "%f \n" minus the quotations and make sure and delete any headers or footers. (You'll see what I mean once you have the program.) Hit the little folder looking picture to the right which saves the preset. This will give you the frame number that each chapter falls on. You will now have a list of numbers like...

0
4847
10286
12808
18108
24117

In the bottom left of Chapterxtracter select "Save Data" and it will create a txt file.

In TMPGenc first load your source then go to the GOP Structure tab and enable force picture type setting, then click on setting next to it. Click Load and point it to this txt file and then just hit OK and encode as normal.

If you want you can add each I-Frame manually or you can even just scroll through your movie and pick a logical place to insert your chapter.

Depending on how you author your disk you may be able to take that txt file that Chapterxtracter created and import that as your chapter list.

[Bubsy94]

ok I'II start with that
thanks adam