Chapters repeat a few seconds

[FrancVernet]

I have authored a DVD with menus and subtitles using TMPGEnc DVD Author and IFOEDIT.

I decided on my chapter points by choosing the frame numbers which I pout in a text file. I then multiplexed video, audio and subs and chapters using IFOEDIT.

After that, I imported the DVD directory in TMPGEnc to create the menus.

This screws up your subs (new VOBs without subs) so using IFOUPDATE I updated my TMPGEnc IFO file with the IFOUPDATE one and I've overwritten the TMPGEnc VOBs with the IFOEDIT ones.

So far so good, DVD starts with menu, I can choose chapters and the subs work.

However when I just watch the movie, at every chapter point the video freezes, seems to go back a few seconds and starts playing then. Until the next chapter and this happens again and again for every chapter.

Is there something that can be done about this? PowerDVD and WinDVD don't have a problem with it, though my standalone Yamakawa plays it like described.

Thanks.

[oddyseus]

There r some options on the options tab at ifoupdate, have the VTSTMAPTI table checked prior to ifoupdating, it looks like a time map problem.

[maa]

Just a thought here :

I've noticed that most authoring programs only allow chapter markers on "I" frames while IfoEdit allows placement at Frame level which works perfectly all the times I used it.
Wonder if TMPG finds this irritating when reading out the chapter information.
After all you're allowing TMPG to chew on your (working) VOBs :D

You could try exchanging your VOB output with the originals in this case - (keep the IFOs for navigation)
OR
Exchange VOBs and vts_0x_0.ifo and the transfere the commands with ifoedit.

[FrancVernet]

You are right about the I-frames. TMPGEnc cannot insert chapters at certain points.

However, I update the TMPGEnc IFO with the IFOEDIT one and I also replace the VOBs...
Doesn't this mean all chapter info from TMPGEnc gets lost anyway??

Also, I don't understand why software DVD players play the disc correctly. Wrong is wrong, right is right, right?

It also seems to me that IFOEDIT does take the I-frames into account. When you check the Celltimes exported from the final ifo you see some different frames used as opposed to the Celltimes you originally imported when authoring.

[FrancVernet]

I now discovered that this also happens with a DVD authored with just IFOEDIT. So I did not use TMPGEnc Author. I just mulitplexed video, audio and subs and added chapters from a text-file and I got the pause and repeat rubbish :-(

Any ideas?

[maa]

Oh dear - thats not typical, I'd say there must be somethong wrong with your raw material....

What is the source of your basic streams ?

Have you thought of testing the routine itself by stripping a comercially made VOB and running it through your method ?

[FrancVernet]

I tried it with two different DivX files I recompressed to MPEG2 using TMPGEnc...

I will try it using a commercial VOB. Thanks for the tip.
By the way, is there a good chance that it is just my DVD player?
PowerDVD or WinDVD do not seem to have a problem with the same material.

[maa]

PowerDVD and WinDVD don't follow the Specs accurately and will play though all sorts of rubish. The player in IfoEdit is a little better usually but the final test is always a DVD-RW

[FrancVernet]

Okay, tried it with a piece of a commercial DVD I ripped. Took a couple of original chapters and created my own random chapters across the file. Authored a new DVD using IFOEDIT and my own chapters.
My DVD player has no problem wirth this one!

So it seems indeed to be a problem with the source....

What can it be? Is it a GOP thing? B P I pictures? I used doom9 guides for setting up TMPGEnc for encoding. Is there something I am overlooking?

[maa]

Well I'm pleased its not the authoring method;)

Unfortunately I have no idea about encoding so you'll need to ask in another forum.

[FrancVernet]

I'll do some testing.

I tried a PAL captured VHS to DVD and that also worked fine. Captured to AVI and then recompressed to MPEG2.