I'm facing some kind of thing I cannot find a solution. It's actualy inexplicable. I'm trying to edit a DVD. It's a single task, a basic one. No reason for worry with complicated steps.
First, I use PGCDemux to demux video and audio. I always do in that way and always works fine. But this time, when I do that, the video file comes smaller than the audio, resulting out of sync pair of files. I'm not talking about the normal delay sometimes occur, like 100 or 200 ms. When the video reaches 19min, the difference of audio and video sync is 9 seconds! To know that, I use DGIndex to generate d2v file and open it in Virtualdub through AVS Mpeg2Source script. I open the WAV file in VDub via "Audio from other file". I always do in this way and always work fine, except now. The source VOBs are NTSC 29.97 video and audio is AC3 384 kbps, that I converted to PCM WAV.
Trying to work in another way, I used DVD-Lab to demux the VOBs and it gave me a MPV-MPA files. When I compile the DVD, I get the same out-of-sync problem. Curiously if I join the VOBs with Womble Mpeg Video Wizard it produces a MPG file without that damn out-of-sync thing. But I cannot compile a DVD with that MPG file because DVD-Lab forces to demux it and come back with the same problem.
I tryed to open that MPG file in Vegas 9.0.
Playing the file there, the problem is gone, but if I try to render a MPV file, that MPV born with the same damn problem again.
Also, I tryied TMPGenc to generate a new MPV file from the AVS script that open MPG file via Mpeg2Source. Same problem... No way to have a pair of files walking together, maybe holding hands...
Links for samples:
http://www.4shared.com/video/UWHwo2UD/intro.html - MPG file (1.5 Mb)
http://www.4shared.com/file/3YvNkdJS/intro.html - MPV file (1.3 Mb)
Concluding, I saw that the System (Video+Audio) file plays fine, but when I demux it to Elementaries, the video became smaller and refuse to play in sync with the audio.
Somebody has a clue? Or some other way to strike that kid 's challenger?
Attached the MediaInfo reports.
Code:General Complete name : D:\Jairo\a5\Untitled.mpg Format : MPEG-PS File size : 3.09 GiB Duration : 1h 49mn Overall bit rate : 4 040 Kbps Writing library : (c) 1998-2008 Womble Multimedia, Inc. / MPEG Video Wizard (12/2008) / Apr 3 2009 Video ID : 224 (0xE0) Format : MPEG Video Format version : Version 2 Format profile : Main@Main Format settings, BVOP : Yes Format settings, Matrix : Default Format settings, GOP : M=3, N=15 Duration : 1h 49mn Bit rate mode : Variable Bit rate : 3 610 Kbps Width : 720 pixels Height : 480 pixels Display aspect ratio : 4:3 Frame rate : 29.970 fps Standard : NTSC Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Interlaced Scan order : Top Field First Bits/(Pixel*Frame) : 0.348 Stream size : 2.74 GiB (89%) Writing library : (c) 1998-2008 Womble Multimedia, Inc. / MPEG Video Wizard (12/2008) / Apr 3 2009 Audio ID : 128 (0x80) Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Duration : 1h 49mn Bit rate mode : Constant Bit rate : 384 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Bit depth : 16 bits Stream size : 301 MiB (10%)
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Did the original DVD come from a DVD recorder?
Yes, it did. It's a movie I have to put subtitles. I work using the wav file to synchronize the times of the sustitles. But I didn't start the subtitle work yet, because I found no way to join video+audio again to complile the DVD.Thank you.
When I have that problem it is always the DVD Recorder's menu that throws off the sync. Some recorders place the menu with the video that it has recorded. If you open the disc in DVDDecrypter and demux it with that....you will probably see and extra piece on the DVD(sometimes listed as a subtitle or something dumb like that) that you can uncheck before you rip/demux with DVDDecrypter.
I'm not sure what I'm looking at in these samples. They're too small to see any sync error, nor is there much of a length
Since you can get a good mpg out of Mpeg video wizard, why don't you try authoring with something that will accept
the Mpg (DVD Flick?)
What kind of editing are you doing? Are you adding a subtitle ?
The reason I put samples it's because I wish you to see if there are any problem with the video format, any anomaly to it give me sync problems. It's "impossible" to upload the whole VOB. The sync is quite imperceptible at the beginning of the movie. It increases along the time and only with elementaries files. If I search the MPG to cut a piece, I wouldn't find because MPG is fine. Only MPV and WAV don't match.
I'm trying DVD Flick. If it gives me good files, I'll go in that way.
I'll also try FixVTS too and post results later.Thank you.
Bad news... DVD Flick rendered an out-of-sync DVD... And it did more: an out-of-sync different from everything before, later than the others. All other programs (PGCDemux, DVDDecrypter, DGIndex, VDub, Vegas, DVD-Lab, TMPGenc...) rendered the same movie, but DVD Flick rendered a new one, with another out-of-sync.
Explaining: I use a control point at 19 min, where I can see very clearly a video and audio event to match. DVD Flick created a stream that this control point is later 3 sec. than 19 min. I watched what it did. I gave to it a MPG file with video and audio in it. But it demuxed to elementaries and, later, muxed again. What for? Why it didn't work with joined file I gave?
Folks, it is a very simple task, but it is putting me ashamed as never before... What is going on that DVD? It is knocking out myself and the old'n'good programs I always use. MPG file is OK. If I demux it, bye bye sync.
Misterious of the life.... or a very fool moron hitting head...
I'll look for some tutorial to edit PGC and IFO files to add the subtitle without re-author. I' not sure if I could without demux to elementaries...
Last edited by jairovital; 22nd Oct 2010 at 14:45.Thank you.
Originally Posted by jairovital
edit - yes mutliavchd does support external subtitles. It also supports a wide range of video inputs. THis should be something to check out. And it won't need to be demuxed before starting.Donatello - The Shredder? Michelangelo - Maybe all that hardware is for making coleslaw?
if you can cut out about 100MB of one of the VOB's, will it show the problem?
If it will, upload it so we can look at it. I don't think we'll be able to diagnose otherwise.
Good idea, davexnet. I'm uploading, right now, 19 min of the VOB. I've already checked and after demux, video shrinks and causes sync errors. Hope you guys can diagnose this freak behaviour.Thank you.
Yes, man! There are big problems with the source. And know what? Audio problems, as you said. Despite the MPG plays well, the audio track was corrupted. And I was blaming the video...
I threw down Videoredo over the source and quickstream fix did the rest.
One more question: how did you found out the guilty track?Thank you.
you can run it though projectx and the log file will give you more info as well
the other possibilities sometimes are encryptions that weren't removed properly, or blank cells at the beginning , but those weren't the issue in this case