DVD Shrink - Cutting up Main Move (causes pauses?)

[GT Music]

I've been using DVD Shrink for a long time, Even though it is now outdated, it still works fine with older DVDs. I have been cutting up an old DVD Movie (taking out a few objectionable things). Anyway after re-authoring and burning the revised DVD plays OK but it stops (Pauses for 1 or 2 seconds) at each break that I created throught the movie and then continues. I'm looking for a solution to merge all of the edited cuts into one main move with seamless edit points.

Thanks in advance

GT

[VegasBud]

It sounds like your cuts are causing clock discontinuities. When you're removing pieces, you're messing up the system clock reference, making it jump instead of smoothly incrementing. Re-encoding to restore a smooth flow is the only thing I can think of.

Maybe one of the gurus here can give you other options.

[jonas more]

Even though you can reauthor a movie with DVDShrink it doesn't actually merge the files you add into one titleset.

The first part you add will be in VTS_01_1.VOB, VTS_01_2.VOB, etc.
The second part will be in VTS_02_1.VOB, VTS_02_2.VOB, etc.

This will continue for each file you add.

Even though the video files will play in the order in which you intended, there will be a pause each time a new VOB begins to play.

You can use VOBEdit and IFOEdit (both free) to merge the titlesets into one titleset using this guide http://members.dodo.net.au/~jimmalenko/test.htm and there will no longer be a pause.

Even Better... If you want to keep your menus and/or bonus material, re-rip the DVD and use VobBlanker (also free) to edit the movie instead of DVDShrink. You can use it to edit content from the main movie, get rid of any extras you don't want, strip any audio tracks you don't need... After removing all of this, if the files will not fit on a DVDr, you can then use DVDShrink to compress them.

Anthony

[VegasBud]

jonas more,

It probably isn't coincidence that:

...the revised DVD plays OK but it stops (Pauses for 1 or 2 seconds) at each break that I created...

On a well burned disk, on quality media, playback pauses are commonly caused by clock discontinuities. The fact that the pauses GT Music is seeing coincide with his edit points would tend to verify the existence of clock discontinuities at those points.

To eliminate the pauses, he needs to put in an updated SCR. I don't think merging titlesets, or using VobBlanker can do that. As far as I know, the only way would be to re-encode. If there is another way, I really like accumulating new knowledge.

[jonas more]

VegasBud

I don't think merging titlesets, or using VobBlanker can do that.

A while back I experienced the same problem GT Music is describing.

After countless hours of researching different software programs and guides I finally came across the method I am suggesting.

I can assure you that if you download all of the freeware I suggested, use DVDShrink to replicate the problem described, and use the method I put forth earlier, you will find that my solution works... it has worked for me many, many times.

Also, I did not mean to imply that VobBlanker could help with the files that have already been ripped and reauthored with DVDShrink so I have edited my earlier post.

Anthony

[jonas more]

Further research leads me to believe that 'clock discontinuity' occurs WITHIN a title.

The pauses in question do not occur within a title... they occur at the end of each titleset.

The problem here is that multiple titlesets are being played in succession. The only solution I know of is to merge all of the titlesets into one.

Again, all of this can be avoided if VobBlanker is used to edit the movie instead of DVDShrink.

[guns1inger]

Jona More is correct. The issue is simply that Shrink creates seperate titles when ever it is used to cut video. The type of editing the OP is trying to do is simply not what DVD Shrink's trimming function was designed for. Shrink's start and end trimming was added simply to allow you to trim of the credits to make the main movie smaller. In short, use a more appropriate tool and the problem will not occur.

[VegasBud]

...'clock discontinuity' occurs WITHIN a title...

Technically, they can also occur in a Titleset Menu domain, but at least one exists in each title. The first cell of a title has the STC Discontinuity flag set, to force a reset of the STC (system time clock). Of course, there can also be additional clock discontinuities within the title.

...Shrink creates seperate titles when ever it is used to cut video...

Having never used DvdShrink for that purpose, I did not know that. It does make sense, in a way. Cutting introduces a clock discontinuity which, while within specs, is...not elegant. Since the first cell of each title resets the STC anyway, it is put into a different title. Of course, the clock discontinuity still exists, the STC still has to reset (which may cause a pause), but the housekeeping is more orderly.

[jonas more]

I do not know enough about STC Discontinuity to continue a discussion on the topic...

I do know, however, that if VOBEdit and IFOEdit are used to merge the titlesets into one titleset there will no longer be a pause.

[jonas more]

I stand corrected...

Once again I found myself obsessed with editing a movie (putting deleted scenes back where they belong) this past weekend and found that even though the DVDr would play without pause in my old Sony DVD player, it wouldn't in my new Panasonic.

I was using VOBEdit and IFOEdit to merge all of the titlesets the way I suggested earlier.

The 'fix' came when I ran the new titleset through VobBlanker.

How did VobBlanker fix the problem? By updating the STC discontinuity flag...

So my suggestion to anyone trying to edit out parts of a movie is to rip your DVD and use VobBlanker for editing. You can only make one 'cut' at a time so you may have to run your video files through VobBlanker more than once.

If you are trying to merge titlesets, use VOBEdit and IFOEdit using this guide http://members.dodo.net.au/~jimmalenko/test.htm then run the resulting titleset through VobBlanker using the default settings.

Anthony

[VegasBud]

jonas more,

Since you are working with this problem anyway, are familiar with the source material, the problems with it, and seem to be an adventurous kind of guy, maybe you'd like to experiment with a different technique.

While researching (for this thread) potential ways to update the SCR without re-encoding, I found this web page. If you scroll down to the "special tab" section, it briefly talks about a setting in the ProjectX program that makes it "generate PCR/SCR stamps from PTS stamps present in the source".

If it really can generate a new, consistent SCR (without re-encoding), that would completely eliminate the SCR discontinuites, making the material truly seamless, thereby providing the perfect solution. Will it work? I don't know, but it does look promising. I meant to play around with ProjectX, and try to get it to work, but realistically, I just can't seem to find the time.

If you do experiment with it, I would really like to hear your results, whether it worked or not. If you decide against the experiment, I'll understand.

Hmmm...."The jonas more Technique"...that does have a kind of nice ring to it.

[jonas more]

I downloaded ProjectX but to be perfectly honest I wouldn't know where to begin...

It seems the program was mainly designed for digital tv transport streams (Doom9.net download page lists it under 'Digital TV' and describes it as a "demuxing tool for DVB streams") and looks very complicated.

If you ever get time to play with ProjectX and find that it will work for the purposes discussed here, please post a guide.

For now I believe I will stick with my method.

Anthony

[VegasBud]

Okay, I'll put it on my "to do" list. Thanks for looking at it, anyways.