Xivd audio off on DVD

[30sauce]

Hi, all. I just burned a DVD (using Nero) of a combination of VOB and Xvid files, each as their own chapter. While the VOB chapters play fine on my DVD player, the audio for the Xvid chapters is out of sync with the video by a second or two.

I checked the Xvids on my hard drive (using WMP Classic) and they play fine, so it's apparently a burning/playback issue... Any idea what could be causing this and how to fix it? Any info is appreciated. Thanks much!

J

[celtic_druid]

XviD is just a video codec, it really has nothing to do with audio. What container? What audio format?

You might want to try converting the XviD files to DVD compliant MPEG2/AC3 before importing to Nero.

[mats.hogberg]

I checked the Xvids on my hard drive (using WMP Classic) and they play fine, so it's apparently a burning/playback issue

That an AVI is playable says absolutely nothing about if it's reencodable. AVI players are very fault tolerant - encoders aren't.

/Mats

[30sauce]

Sorry, I'm still a noob so I don't know what you mean by 'container'. I'd have to look up the audio format...

And the Xvid clips were originally VOB format. I wanted to split the clips and VirtualDubMOD wouldn't let me save the split file as a VOB (or at least I couldn't figure out how to do it).

So if I re-split the files, do you have any suggestions on which codec I should use? Sorry, but I'm new to this whole deal... Thanks.

J

P.S. I'm assuming that if I re-encode the Xvids, there'll be a loss of quality so I'm assuming it'd be better to re-split the original VOBs. Let me know if I'm mistaken...

[mats.hogberg]

Time to tell us: What do you have, and what do you want to end up with?
(Container: AVI is a container. MKV is a container. OGM is a container. They contain different media streams, most notably video (for instance XviD encoded) and audio (mp3, AC3 & cetera).)

/Mats

[30sauce]

I'm not trying to hide it, just didn't know what info you needed.

What I have is several clips in VOB format (ripped from DVD) and several clips in Xvid format (ripped from DVD and split/encoded as Xvid using VirtualDubMOD). Not sure about the audio details of these files -- I didn't change anything with the audio on the VOBs and didn't touch any audio settings in VDMOD when encoding the Xvid files. If necessary, I can try and figure out the audio details tonight when I'm home.

What I want is all of these clips on a DVD that will play in my stand-alone player. I was 98% successful with my first attempt, which I compiled and burned using Nero. The only problem is that the audio on the Xvid clips are out of sync with the video by a second or two on the DVD (though, as I mentioned, they play correctly on my PC).

Those are all the specifics I have away from my computer. If you need additional info, just let me know what and I'll see if I can find it this evening. Thanks.

J

[mats.hogberg]

I'm not trying to hide it, just didn't know what info you needed.

Just pulling your leg.
If the VOBs went fine, thata's probably something in the XviDs Nero doesn't like. Try encoding them to DVD spec mpegs first, making sure they play in sync, then author.

/Mats

[30sauce]

Thanks for the suggestions, mats. One last noob question... I don't really know what qualifies as a DVD spec mpeg. Any suggesions on how I should save it in VDMOD or what codecs (and settings) I should use? Thanks!

J

[mats.hogberg]

1) Take a look at "What is" top left.
2) VDub isn't the right tool for AVI/XviD to mpg - some mpeg encoder like TMPGEnc is what to use!
Lots and lots of guides to be found under Convert left, or in this recent thread

/Mats

[30sauce]

Okay, one more quick question. I download TMPGenc and have tried importing my Xvid files. I can get it to convert to a separate audio and video file, but when I try to do the MPEG Layer II option (to get just one file with A/V) it won't work.

I'll select the Xivd file and it shows up as the video file in the project wizard but the audio file is blank. If I try to select the same Xvid as the audio file (hoping it can read the audio from there) it gives me an error.

I know this is probably covered elsewhere out here, but is there an easy way to encode an Xvid to a DVD NTSC file with both audio and video with TMPGEnc? Sorry for all the questions... Thanks!

J

[celtic_druid]

Thought that we covered this? XviD is just a video codec. It has nothing to do with audio. Whatever your container is that has the XviD video stream in it, it also has an audio stream, which I guess you don't have a decoder installed for.

Let me get this right though. You have some VOB files which you converted to an XviD avi, ogm or mkv and now you want to convert them back to VOB's?

[Soopafresh]

open up the "xvid" file with gspot .

what does the audio stream say ?

[30sauce]

Yes, I understand that Xvid is only a video codec, but since I wasn't TMPGEnc wasn't pulling in or producing any audio stream for the file, I thought I might have to select that file again for audio.

And yes, I started with a large VOB that included several chapters. I wanted to edit some of the chapters out, so I split the file in VDub. Since it didn't allow me to save as VOB (that I could see), I had to encode it. I chose Xvid, as was suggested by a number of members out here.

And Soopafresh, GSopt has the audio as:ac3 (0x2000) Dolby Laboratories, Inc.

Any thoughts on what I need to do next (or redo)? Thanks!

J

[celtic_druid]

I would suggest that you just use something like TMPGEnc MPEG editor to directly cut up the VOB.

If you were to install an AC3 ACM decoder then TMPGEnc would recognise the audio, however once again I would not recommend re-encoding it.

[30sauce]

After struggling through the complexities of VDub and issues with TMPGEnc, I downloaded MPEG2Cut and that thing worked perfectly. Obviously not many features, but in terms of a fast, easy cutting tool for a noob like me, it was awesome. It deserves some credit for its simplicity and speed.

Anyway, I've scrapped the Xvids and re-cut the original VOBs in a fraction of the time it took me with Vdub. Thanks for all your help!

J