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Old 5 Nov 2003, 07:52 PM   #1
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Question How to convert VOB files created with VOBSplit into MPEG2 files


I previously split some VOB files from a DVD into smaller ones with VOBSplit in order to create playable files from special scenes.

No I want to know if there is a way to convert these files created with VOBSplit into the MPEG2 format. Using DVDx for example generally works with those files where I only had cut away the end of the original VOB file with VOBSPlit (but the converted MPEG2 file ends a some split seconds ealier than the VOB file).
But if I want to convert a file split from the middle of the original VOB file, DVDx gives me the following error message: "Failed to parse file, no sequence header found".

Is there any chance that I can convert these "headerless" VOBs into MPEG2 files? I would appreciate any helpful information on this matter.


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Old 6 Nov 2003, 03:23 AM   #2
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First use TMPGEnc to Demultiplex the .VOB, as follows:


1) First save the ".M2V" video stream
Then save the desired (if more than one) .AC3 audiostream

2) Load the .AC3 audiostream into a hex editor and locate the FIRST instance of "0B 77" - and delete/cut all data prior to it. Save the modified .AC3 audiostream

3) Use TMPGEnc to Multiplex the ".M2V" videostream and ".AC3" audiostream, as follows:


4) If converted MPEG file is out of synch (most probable, since a piece of the .AC3 was "trimmed" off the front-end of the file), use TMPGEnc as follows to correct:

Load MPEG into TMPGEnc's main window
Click on "Setting" radiobutton
Select "Advanced" tab
Put a checkmark next to and then doubleclick on "Source range"
Enter appropriate number (positive or negative ["-"] next to "Audio Gap Correct"
Click on "ok" and click on next "ok" to get back to main window
Save with a new filename

(Or, if you prefer to adjust the .AC3 audiostream directly, download AC3DelayCorrect from - and additionally download (and place in same folder) GfaWin23.ocx)
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Old 6 Nov 2003, 05:42 AM   #3
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Thanks for the advice, but I always get an "Illegal MPEG system stream" error message when trying to demultiplex the VOB file with TMPGEnc.
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Old 28 Jan 2004, 06:50 PM   #4
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Open your .VOB files one-by-one with "VOBrator" or "VOBEdit" and extract the MPEG-2 .m2v video.

In TMPGEnc try using its "Merge & Cut" feature. Open one file, change the output file name and just click on 'Run' button.

Also see these forum posts/topics:

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Old 2 Feb 2004, 06:29 AM   #5
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Have you tried to create a nwe .ifo for the vob files?

Simple name them as on a cvd with increasing end numbers. Run IFOedit to create a new ifo for all those remaned vob-files.

Greetz Simbalin
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