very strange DVD fighting, testing, convert, problem, shorter

andy

Usually I am spending 2 days to convert DVD to SVCD. One day - converting itself, testing with CDRW, then small corrections (in xml file, f.i.) and CDR burtning the 2nd day. Now 2 weeks I am fighting with one music clips DVD. Usually while converting a set of clips (not all DVD) I am using VobEdit to Demux Cells and then Join celected ones into new DVD (much shorter) and create new .IFO files with IfoEdit. This case I faced out with the problem that some (the most part) of cells contains some frames and/or audio packs from previos or/and next cell. Other words, the real border between clips lays somewhere inside Navigation Packs, so, taking the first or the last Navigation Pack on any cell you could discover there the frams/audio packs from different clips. I have deleted all NP with wrong frames (and some needed frames) but it does not help me - the result is very bad - a/v desync (DVD has AC3 stream, but while encoding at the end of each cell I have a message of lost stream or CRC error) and frames with squares while the picture is changed at the boredr between clips. Now I am trying to convert each clip alone, then unite all .mpg files with DVtools, and then launch VCDxbuilder. Maybe anybody could give me some advice?

Normally I would move this since it is a problem post, but you are doing some very advanced stuff way beyond the ability of most people here.  I know I can't help you.  I sure hope somebody can though.

Please be more specific in your title.  Make the title reflect the problem.  

Mark

Thanks not to remove my problem message. Now I am trying to do it with frame selections - a new feature I discovered yesterday. It's a pity it is not possible to unite different pieces of DVD chosen with Frame Selections to one piece. As far as I understand I need to convert each piece separately and then to unite all .mpg files to one big file to continue mastering. Or I am wrong and there is some way to unite that pieces into one at the stage of Frame Selections to make conversion more simple?

In addition - Frame Selections is buggy (wrong start frame operation)
Other words chosing start frame I have finally .mpg piece which has been started app. 75 frames later. With end frame is ok. A/v sync is good. Could anybody tell me how that frame selection works? So, other words, how to launch that application manually?

Hi,

I think I know what problem you are talking about and I've seen this before.

Are you doing all this from your Hard Drive or are you doing it another way?

It some of the cells contain previously streamed materials in the audio stream then what you might want to do is take the .vob files and clip out what you want section by section and have the audio demuxed from it...its a little difficult way around but messing with cells is strange.

I may not fully understand your question and if that is the case I apologize.  It was slightly difficult to follow you.
Chip

Thanks for comment. I have tried to cut off small pices using Chopper. But it only operates in seconds (so, you could only cut off the part of stream, which length is multiple respectively). I do not know how to demux audio AC3 stream and remux it again (to demux - VobEdit, and remux?). Other question - how to edit AC3 file? The way I know is rather complicated - to convert AC3 to WAV. Then edit wav, and then convert it to AC3. But the results mostly lead to a/v desync and I am pressed to find the exact digits fot delay editind wav file. Now I am trying to do it at the stage of bbMPEG...muxed_file. Using frame selections (buggy - cutts off app. 60 frams from the beginning of each selection) with app. 100 frames behind, then load .mpg file to Canopus to calculate the exact number of frames to be cutted off, then with DVtools trying to cut the quantity of bytes multiple to 2048 to have a proper .mpg. file. Then all. mpg files will be united into one with DVtools.

Ok,

The First part of your response:  You should be able to crop a selection by the individual frame.  I know this is the case with DVD2AVI...even though this may be the long way around, I am not familiar with a way to do this in one easy method, because as you are aware, this isn't the commonly requested operation.

Second part, editing AC3:  I am not aware of a program that allows you to edit an AC3.  I would decode to .wav and then process it; it may be a long way around but you have control over doing that (when one delves into digital media editing on a per frame [or second as the case may be] basis, things can get quite tedious and time consuming and is often the only way) every step of the way.  Then you can manually sync it back into the movie aspect.

Regarding the last aspect, I wouldn't (personally) edit a fully muxed file because as you have said it leads to sync issues.  It seems the easiest route is to split it up and do one part by itself.  Even if you wanted to edit the muxed file, (and I'm not positive) but I would think and HOPE that there were better choices to use rather than bbmpeg.

From listening to your previous post, it seems that yes, this is a complicated procedure and now I DO remember having done it.  But, you are making it more difficult that it really is.

Let me pose a final question:  Are the scenes that you wish to extract from only ONE given DVD?  In other words, the new movie that you wish to create; are the segments all found on the same DVD, you just wish to re-arrange them?

I hope we can find a suitable course of action for this most complicated problem.

I sure hope this helps you.  If it doesn't, I'll do this action myself today and see what I come up with.
Regards,
Chip

Of cource, there is the same DVD for all clips. I understand what you are thinking of, but this is not the case. Now my results are the following: all clips have been processed separetly (with 100 frames behind from the beginning not to lose any useful frame). As the result I have had 11 muxed files. I have cutted them using DVtools and checking the start points with Canopus. Then I have tried to unite them into 1 file - and have terrific squared frames at the border beween clips (3-4 frames, enough to spoil the picture during watching). Then I went to TMPGEnc to merge and found out that it saw problems in MPEG streams in files cutted with DVtools. I have started the cutting procedure again with TMPGEnc. It occured to be slightly buggy (always tried to cut app. 0,5 sec more than has been shown). OK, I have overcome it, but when merging - the same squares in the border. I assume, that the program is trying to make the transition smooth and mixing the last frames of the one clip with the initial frames of the next one. I wonder, how to avoid it?
The only result I have had - SVCD (VCD) disc writen with Nero, all initialy cutted with DVtools (and rejected with TMPGEnc) trackes were OK. It plays OK (sync is OK!), but I am crasy, when Nero is trying to show it to be NTSC VCD disc while tracks are PAL.
So, looking for program to merge mpeg2 files without smoothing the border frames.

Hmmmm....squares in the border?  Can you post a shot of it?
Perhaps you could also ask this on the TMPGEnc board.

I'm going to try some stuff and get back to you.Good Luck!
Chip

Maybe you understand me wrong. When one clip ends and another one begins the system is trying (WHAT THE SAKE?) do some transition from one GOP to another. That's why usually everybody is trying to start and finish videos with fades (in/out). Cause the glueing of the black frames does not lead to any SQUARES at the (few - 2,3,4) BORDER (I mean) transition frames. Other way when one clip ends with some picture and the next one starts with another picture - while merging the system is trying to do smoth transition. That means that one picture during some (few - 2,3,4) frames changes to another one. But that transition is made like a set of squares appering at the frame more and more often. Outside that squares there is an ending picture, inside - starting picture of the next clip. Believe me, it is very annoying to watch. Today I have tries to use DVtools (last available - only 3 frames are spoiled), EZjoiner (very bad result - it takes more than 10 frames to make the smoth transition), AVI/MPG/RMjoiner (4 frames) and Jfuse (simply an horrow - it cutts off some pieses and changes the format).
So, the question is how to merge MPEG2 of SVCD quality not to have defects at the border frames.