Audio on created DVDs out of sync...

[Chris24]

Hi, I'm having some problems with the audio on the DVDs that I create. I capture them using Dazzle/Studio 8 and then I add the menus and chapters with TMPEG DVD Author and I burn them with Nero. The dvd's come out fine, the picture quality is good, but the sound is off by like 5-7 secs..I have a very knowledgable and smart person who helps me with my DVD probs and the only thing he can think of is when I burn with Nero to change the burn speed from 4x to 1x, and when I start to capture don't actually start capturing until the video is playing smooth and do not include the black screen that comes at the start of videos. Everything else works fine so I can't figure out why this is happening and those 2 things are really the only things we can come up with that could be the prob, has anyone else had this prob, and if so, how did you fix it? Thanks in advance.

[Brent212]

Try playing the authored files (output from TMPGEnc DVD Author) in a software player such as PowerDVD before burning with Nero. If they play out of synch there, you can rule out the burning process as the cause.

Does the captured file play fine in a regular media player (such as Media Player Classic)? Even if it does, I would bet that the captured file has synch errors, that won't show up in a software mpeg player, but that will show up in the authored files. You can use Womble MPEG-VCR to detect these, using the GOP Fixer tool. Try trimming the file a little bit with Womble using the "GOP Trim" feature. This sometimes will solve the problem. If it doesn't, AFTER GOP trimming, try using the GOP Fixer tool to not only scan the file, but to also fix it.

Another tool that might work is VideoRedo. You simply trim and save. The trimmed file might work (as with Womble, this might not always solve the problem).

I have a Hauppauge PVR 250 capture card that causes the same problem. These methods work for me.

[Chris24]

Well, I have womble..would i create the menus and the dvd thru the tmpeg and then bring it up in womble? What do you mean trim exactly..what i do is put videos from vhs tapes to dvd, so there's not really much to trim..I'm not good with doing a bunch of different things because I've used these same programs and methods for like 5 mts now since I started doing this, I'm afraid to try something else with new products that I don't use ever, but I do have womble, when I capture I play the captured video in the preview screen and everyhing is fine there so I'm guessing it has to happen after the capturing that I do..

[winifreid]

Try capturing to avi (huffy or picvideo). Many have problems capturing to mpeg and then editing before authoring.

[Chris24]

what's huffy or picvideo? i can capture to avi with the studio 8 and dazzle that i use i think

[Brent212]

My response was based on the assumption that you are capturing to dvd-compliant mpeg files. When you capture video (from VHS, or cable, or whatever), you should have a single file, with a ".mpg" extension. The stuff I said about using Womble is done with this file. So you open that .mpg in Womble, and trim however much off the start and end of the file, and I believe you save it using the "GOP Trim" option. Before doing that, though, I'd open the .mpg in the GOP Fixer and scan it for errors. If there are errors, Womble probably won't be able to successfully fix them as is, which is why I always GOP Trim the file before fixing any errors.

You then take the fixed .mpg and import it into TMPGEnc DVD Author (as I assume you were doing before).

If you're not capturing directly to mpeg, then this probably won't be much help.

[Chris24]

Yes, I'm capturing directly to mpg in the studio so i'll try that with womble hopefully everything is ok..if they dont find any errors, is there anything you think i should try after that?

[Chris24]

I have alot of captured videos on my computer that I haven't made into DVDs yet, so I opened the Womble, and opened the GOP fixer, and i left the first circled option selected that was default picked already then i went to where it says input, do i just put the vid in there and leave the output blank or should i put the same vid in the output spot also?

[Brent212]

Here's a thread that deals with a very similar problem (just with video CD's instead of DVD's):

https://www.videohelp.com/forum/viewtopic.php?t=228458

Even if the GOP Fixer doesn't detect any errors when you scan the file, you should still try either GOP Trimming the file, or doing what the guy in that thread suggests.

Another last resort you can try is simply demultiplexing the .mpg to separate audio and video streams (.mpv and .mp2 or .mpa) with Womble and then remultiplexing them back into a single .mpg with Womble. I've had that solve this problem before as well.

[Chris24]

Well the GOP fixer didn't find any errors on the video that I tested it on. I've never done the demultiplexing ever..so I have no clue how to do it or what it entails, what exactly does it do? I saw it as an option in Womble but I'm not sure what it's purpose is and how it'd help..you said you had the same prob as I'm having and doing that fixed your problem?

[Brent212]

Well in all my cases with av synch problems, the captured .mpg I was using originally had errors that Womble's GOP Fixer detected. Since your captured file doesn't have these, what worked for me might not work for you.

Demultiplexing takes a .mpg and separates the audio and video streams into separate files. The video usually goes into a .mpv file, while the audio usually goes into a .mpa or .mp2 file. Multiplexing is the opposite - it combines audio and video streams into one .mpg file. The way to demultiplex and multiplex is simple - In Womble, just select "demultiplex" (not sure what the exact wording of the option is) and select your captured .mpg as the source. You might have to specify two destination files: one for the video and one for the audio, although I think it'll automatically do this for you using the same filename, just with .mpv and .mpa extensions. You then have two options - 1) you can import these two files separately into TMPGEnc DVD Author and see if the authored files go out of synch or 2) you can re-multiplex these files back together and import the single resulting .mpg into TMPGEnc DVD Author and see if the authored files go out of synch. If you do the second option, be sure to play the re-multiplexed .mpg in a software player (like media player classic) before importing it into TMPGEnc DVD Author to make sure it's in synch.

If you haven't tried VideoRedo, I'd try that. You can get a free trial that's fully functional. Just open the captured .mpg in that, trim it a little bit (although I don't even know if that's necessary), and save it. Then use that .mpg in TMPGEnc DVD Author, and test the authored files in PowerDVD (or some other software DVD player). If it plays there fine, your burned DVD should be fine too, although you might want to try using a re-writeable to be safe.