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All Forums > Tech Talk > Tech Talk Forum Page 47 > Please help if you can
AuthorPost
valjean4876
Member

953 Posts
3/04
Posted - Aug 8 2005 : 10:59AM
I have a problem with two DVD's. I haven't seen the problem before, but I'm sure someone knows what is going on.

I bought a DVD from a specific company that froze up before the last scene. There was no way to back up because I couldn't RW through chapter stops for some reason, so the scene was unwatchable. It happened on 2 separate DVD players. It was a free screener, so I didn't make a huge fuss.

But, a few months later I bought another DVD from the same company. This DVD won't load at all, on my player, or my friend's, or my parent's. On a fluke, I tried it in my PS2, and it plays just fine. This is still unacceptable though, because the picture output is so bad from my PS2. I don't have the best audio visual cables for it, and that really isn't the point anyway.

Does anyone know what could cause this problem, and short of buying a new player, what should I do to fix it?

I didn't mention the company name for a reason. If I find out that this is a problem on my end, then there is no reason to disparage their product prematurely.

Also, my DVD player plays ALL other DVD's perfectly.

Thanks.

Edited by - valjean4876 on Aug 8 2005

BigBobxxx
Senior Member

2681 Posts
5/04
Posted - Aug 8 2005 : 1:14PM
When a video DVD is created, the actual content resides in multiple ".VOB" files. The .VOB files max at 1 GB each and then another file is created. So, on a DVD with 6.5 GB of content, you would find six .VOB files of 1 GB each and a seventh one with about .5 GB.

To answer your question, one of these files is corrupted.
Whether it is a bad file, got corrupted in preparing the DVD or a defective media issue is uncertain.

The freezing up before the last scene scenario also suggests the possibility of a bad layer break (if you are dealing with a DVD-9 dual-layer disc. If your disc has more than 4.5 GB on it it is a dual-layer disc.
This could also mean your players are getting hung up at the layer break for whatever reason.

Some software players (like PowerDVD 5 or later), can play .VOB files just as easily as you can play .MPG files.
If you can, put your disc in your computer and open the disc so that you can see the files. Then, find the highest numbered .VOB file (there shouldn't be more than 10), right-click on it, choose "open with" and then select the application you want to open it with. Try all the .VOB files the same way.
You should be able to narrow it down to which .VOB file is the defective one this way. You can also determine which layer the defective file is on too.

This doesn't solve your problem, but it may give you a workaround. I have been able to watch scenes in this manner when they were unwatchable from the video DVD itself.
FYI, the .VOB files are not broken down by scene... just by size (i.e. 1 GB limit).

valjean4876
Member

953 Posts
3/04
Posted - Aug 8 2005 : 2:51PM
Wow, thanks. That's great info.

I still wonder about the DVD that won't load at all on three different DVD players, but will play on my Playstation2.

Is it that the Playstation2 is similar to the "software players" and is able to somehow play a corrupt .VOB file?

I have written off the DVD that simply won't play the last scene as I didn't like the first four scenes to begin with.

But the one that won't load at all has Hailey Young in it, barefoot, and I will have ten coronaries if I am unable to watch it with a decent player.

And since both DVD's are from the same company, I am a bit hesitant to trade it for another copy(as the 3rd-party seller has offered) if it is just something they do in their DVD authoring that makes my player, and everyone's that I know, obsolete.

Thanks for your reply, Bob. I appreciate it.

Note: I do not have a computer capable of playing DVD's. My work computer has a DVD drive, but I don't think I have the software to play them.

Edited by - valjean4876 on 8/8/2005 2:54:36 PM

BigBobxxx
Senior Member

2681 Posts
5/04
Posted - Aug 8 2005 : 9:17PM
PowerDVD is sometimes included with the software that comes with PCs, so check your work computer to see if it's there.

The workaround method I described is only going to help if you're dealing with a media issue and the file itself is OK. If the .VOB file itself is corrupted NOTHING will be able to play it.

Keep in mind that there are numerous other files, in addition to the .VOB files, that enable a video DVD to work properly. It is often these files that can be causing the playback issues. So, if the .VOB file is intact you can play it the way I described.

valjean4876
Member

953 Posts
3/04
Posted - Aug 9 2005 : 9:24AM
Thanks again, Bob. I appreciate your taking the time to respond.

 
snowman872
RainCoatReviews.com

400 Posts
6/00
Posted - Aug 13 2005 : 5:47PM
If a computer drive is able to read the disc, you may be able to make a back-up copy using something like Pinnacle's Instant DVD (or many others). If the program recompresses the scenes, it will create a new and hopefully more compatible disc.

-- Snowman

valjean4876
Member

953 Posts
3/04
Posted - Aug 14 2005 : 9:35AM
Forgive my ignorance, but is my PS2 essentially a computer drive?

I just wondered why the one that won't load at all will play on my PS2, but not on other regular DVD players.

I don't have the software on my work comoputer to play DVD's.

Thanks for your reply, snowman!

Bill All-Star Supporter
All-Star Member

5334 Posts
6/00
Posted - Aug 14 2005 : 12:30PM
Some DVD players handle different error conditions differently than others do. I have two DVD drives in my PC. Sometimes the top drive will have a problem with a disc that the bottom drive won't and sometimes it's the other way around (but more often the newer drive does a better job).

The same goes for my stand alone machines. It seems that my newer machines do a better job with bad discs than the older machines do.

Sometimes there will be a firmware update available for DVD players that will help with error handling. Usually, these updates either require a trip to the repair shop or you can download them to a cd and when you by put that CD into the DVD player, it will update the firmware automatically.

valjean4876
Member

953 Posts
3/04
Posted - Aug 16 2005 : 2:02PM
Wow, thanks Bill.

That does help me some. So it sounds like if I buy a new DVD player, it might fix the problem since the one I have is from 2002.


Otherwise, I will look into the firmware updates.

I just can't use my PS2 and be happy about it because the picture is not very clear. I could get a better TV and/or a better hookup system for my PS2, but I'd rather just get a new DVD player if that is the case.

I absolutely hate having to watch DVD's on my computer, so that I guess will not be an option for me.

Thanks for your help, Bill!


Edit: By the way, as I already said, that is the first time I've ever had a DVD not load like that. Well, it just happened for the second time two days ago, and it is a company from which I own many DVD's, and they all work fine.

That's twice in about a month.

So, maybe my DVD player is pooping(Although it happens with my parent's player too, and theirs is also an older player), or there is some new way of making DVD's that is not handled well by my older DVD player.

Edited by - valjean4876 on 8/17/2005 9:41:05 AM




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