Different skew values in each Vob of the same DVD

[alexwrc]

I'm trying to rip a DVD to x264/AAC in mp4 container, but the final muxed file has got the audio out of sync.

I opened the vobs in VirtualDub mod (Just by chance) to see the audio properties, and I've noticed some vobs of the same DVD has got a different skew value.

The original audio is LPCM 48Khz 2ch 16 bit, and I usually demux the whole DVD with DGindex, but it didn't show any delay or aditional information, it just demuxed the track in the same format.

Could anyone explain me how to fix this? Surely those skews are giving an aditional delay (skew=delay?) in each vob causing a rare sync problem in the final video.


I used the following programs:

- anyDVD+DVDdecrypter to extract the files

- DGindex to create the d2v and demuxed audio of all vobs at the same time

- x264 video using Megui

- AAC audio in BeLight wth the following command line:

BeSweet.exe -core( -input "D:\total T01 48K 16bit 2ch.wav" -output "D:\total T01 48K 16bit 2ch.mp4" ) -bsn( -2ch -cbr 128 -aacprofile_lc ) -ota( -g max )


- MP4 muxerd with Megui

[setarip_old]

Hi!

What is the Title and Region of your original DVD?

[alexwrc]

Hi, it's "Ruf story", a region free DVD.

[setarip_old]

Are you sure you haven't misspelled something in the title?

[alexwrc]

It's the second disc of "Ruf faszination Plus" collection, but its propper name is the "Ruf story" (The alone DVD I mean)

[Guest]

The skews are purely a result of treating the VOBs separately. You shouldn't do that. When DGIndex demuxes LPCM, it tries to produce a zero delay file. That's why it doesn't give you a delay.

[setarip_old]

@alexwrc

A bit off topic but, if this is the DVD about the history of RUF Porsche conversions, may I ask where you managed to locate it and how much you paid for it?

[alexwrc]

Ok neuron2. I'm out of ideas now :)

setarip_old, I don't know why do you need those details. It's sold world wide only via Internet, from Ruf and specific online shops.

[Guest]

You're out of ideas for what?

I told you the differing delays are an artifact of the VOB being split. There is nothing real about it. Don't process them individually.

So what problem are you having?

[alexwrc]

I thought the sync problem may be those skews, but I always process the all together as you said so the real problem must be another thing. That's why I'm out of ideas.

You answered my question nicely, thanks!

[setarip_old]

I don't know why do you need those details.I thought it would be obvious from my statement that,"A bit off topic but, if this is the DVD about the history of RUF Porsche conversions, may I ask where you managed to locate it and how much you paid for it?", that I might be interested in purchasing it - if it's available for anything less than the $99.95 US price I've seen at the Ruf website...

[alexwrc]

If do you live in Europe, you can buy it directly to Ruf for 72€ + mailing wich costs 20€ or less. I saw it in ebay or amazon shops (I'm not sure) long time ago, but not cheaper. Both DVDs are amazing but too short, and the video quality is mainly poor. For that price you could think it's God inside a DVD lol

[setarip_old]

Remarkable - considering that they've already absorbed the major production costs involved in the initial DVD creation, you'd think they'd want to create a price point that would make it "irresistible" to enthusiasts!Both DVDs are amazing but too short, and the video quality is mainly poor.Thanks for the insight. Sounds like you feel you've been ripped off...

Based on your description, I don;t think I'll pursue this any further.