Authored DVD frame Skips for the last 40 minutes only!

[DaveHhh1]

Hi all,

I have a really weird problem.

I put two home made videos I did onto my computer and did a simple splice together of them using Womble software. This created my dvd compliant mpeg with an avg bit rate of 6000.

The footage came to about 4 hours and 3 minutes. So I authored a simple DVD in Ulead DVD Workshop 2.0 (I also tried DVD Lab Pro). After the dvd was created to my hard disk it was just under 8 Gig. I figured I would use something like DVD Shrink later on.

Now here is the bizarre bit. The playback is fine until it gets to the last 40 minutes or so of footage and then the video does this awful frame skipping (it may be missing frames). Audio which is in AC3 2.0 is fine and shows no distortion.

Now the last 40 minutes are not where the beginning of the original second part of footage I recorded began. So it's not that the two splices are so different because they work fine together until the last 40 minutes of the second footage.

What is bizarre is that if you run the .IFO file through something like media player the video plays unaffected even for the last 40 minutes.

What am I overlooking? I am really stumped on this one.

Any ideas greatly appreciated.

I have authored many dvds in the past but this has really gotten me stuck.

Thanks in advance.

[manono]

Hi-

I got the same thing once by using my 16x burner and 8x media, and burning at 8x. I reburned at 4x and everything was fine. Ever since, I've burned at 4x and haven't seen the problem again. I couldn't understand exactly how you were doing your testing, but if you did something similar, you might try burning at a slower speed.

[DaveHhh1]

thanks for the reply.

However,

I have not burned to disc only to the hard drive at present if I burned to the disc the problem would still be there.

I am confused how if you play the VIDEO_TS folder through a dvd player like PowerDVD or Media Player it is screwed yet if you play the .IFO off the last 40 is fine.

Any other ideas?

[DaveHhh1]

in fact I am not sure if frame skips is the correct description it's almost as if the video and speeds up and slows down alternating like this for the last 40 minutes. (Frames missing could give this illusion I guess).

[manono]

Forgive me. I got to the part about the last 40 minutes skipping, and completely forgot that you still had the 8 GB file on the hard drive.

I don't suppose the skipping began about where the 2 files were joined? That would be too easy, I guess, to blame it either on Womble or the authoring app not handling joined video properly. But it just so happens that something similar happened to me recently. I joined 2 .m2vs using FileMerge. I authored with IFOEdit, and got the skipping on what was originally the second file. I authored again with MuxMan, and everything was good.

This is kind of outside my area of expertise, though. Sorry I'm not more help. One possible answer might be not to join them at all, but add them to the authoring app unjoined, and let it join them. Perhaps one of the experts around here will see the thread and respond.

[DaveHhh1]

thanks for the reply. No sadly the skipping did not begin where the 2 files were joined. That is what is so confusing.

I'll check out MuxMan, but I am confused how if you play the VIDEO_TS through the PowerDVD or whatever it is messed up (This would be how a normal dvd player would play it too) yet playing the .IFO file the video is completely fine.

Does not make sense to me because it's the same file residing on the hard disk.

So weird. I hope one of the experts can shed some light.

[DaveHhh1]

Just analysed the file through GSpot and it says that the bit rate of it is 9802kbps.

Is it because it is over the standard dvd limit that it behaves in this fashion at the end of the film?

The file was recorded in vbr format.

If this is the problem is there a quick way for me to lower the bit rate or am I going to have to reencode? If I have to reencode TMpegEnc will take forever (25 hours or so).

Thanks.

[Richard_G]

Presumably this is with the full 8 Gb file that the skipping happens? Try running it through DVDShrink in any case as that will reduce the bitrate in case that is what is causing the problem. If it doesn't, you've just tied your machine up for a few hours, you'll still have the original.

[DaveHhh1]

Presumably this is with the full 8 Gb file that the skipping happens? Try running it through DVDShrink in any case as that will reduce the bitrate in case that is what is causing the problem. If it doesn't, you've just tied your machine up for a few hours, you'll still have the original.

Thanks for the response.

I should have mentioned that is with the actual shrunk 4GB dvd folder too. I ran it through shrink. When I run the shrunk file through gspot it shows that the VBR is 9082 max bit rate. So I am really stumped maybe the bitrate is not the culprit. I am just running out of ideas...

Any other ideas greatly appreciated.