Video good - create disc preview-audio is outta sync- fixed!

somegeek · Post by **somegeek** » Mon Sep 25, 2006 4:49 am

Been scouring the forums to no avail...

I have a 1.5 hour mpeg that was pulled off my Sony HC3 so it was captured in MPEG2 format(18g). I down-converted it to put on a DVD following this tutorial. When I place this video file into VS or MF (lastest versions) and manually insert the scene/chaper markers and play it back in the project window - everything is synced and good -when I play individual scenes.

When I click create disc and then click the remote to simulate, my sound is off on a few files. I have a few chapters that will start with a frame that is holding for about 2 seconds while sound from the previous chapter plays and then the sound and video begin for that chapter.

I am confused as to why this works in the project view but is off when I view the DVD preview? I've tried auto-detecting scenes, setting the markers via multi-trim video, 'cut clip based on jog slider position' to no avail. I'm at a loss here. I burned this similar disc in Nero and there were not any issues - not sure what settings were there that I am missing in VS/MF?

I read up on the I-frame limitation of 15 frames so I figured the multi-trim would cut it by I-frame along with the sound. This solved my problem of having a few frames of the previous or next chunk of video being inserted into the wrong chapter but the audio problem remains.

Everything goes to heck when I hit the 'Create Disc' button.

Is there something I am overlooking with the audio getting off sync when I go to create disc? Would it help if I broke up the 1.5hour mpeg into individual .mpg files?

Here's a question I just came up with before hitting submit...

I directly down converted my files captured off my video camera(MPEG2 HD) to the DVD standard format. Do I need to perform the steps listed in the tutorial to create the MPEG2 file from the MPEG2 file I pulled off my camera before creating the DVD down convert?

Tutorial lists:
- capture the HD MPEG2 off the camera
- follow the steps in the tutorial to 'CREATE MPEG2 HDV VIDEO FILES' to create the lower frame rate MPEG2 files
- down convert to DVD standard.

I did:
- capture the HD MPEG2 off the camera
- down convert to DVD standard.

Does the above listed intermdiate step do any extra voodoo with the file to make it play nice when down converting?

Apprecaite any input!

somegeek

heinz-oz · Post by **heinz-oz** » Mon Sep 25, 2006 4:59 am

http://phpbb.ulead.com.tw/EN/viewtopic. ... hlight=oos

http://phpbb.ulead.com.tw/EN/viewtopic. ... hlight=oos

http://phpbb.ulead.com.tw/EN/viewtopic. ... hlight=oos

etc. etc.

Successful mepeg editing requires a lot of luck when it comes to configuring a system. A few people, very few actually, only one I think

claim that it can be done with VS and MSP. I have yet to see that myself.

I suggest you get a dedicated mpeg editor to do it with. Mpeg2 is a distribution codec not intended for further editing.

Search this forum by author for jchunter, you will find a lot of posts where he claims it can be done. If anyone, he should be able to help because he does it all the time with excellent results.

somegeek · Post by **somegeek** » Mon Sep 25, 2006 6:08 am

Thanks for the links - read two of them in my scouring.

I am confused as to how this can look good and run properly in the project view but craps out when I go into the DVD preview window?

I have 4 out of 8 chapters working properly in the preview. Four have the audio sync issue and those four are partially or all in the material after an hour. Not sure if this is a coincidence with the other person having audio sync issues who is also seeing this past the one hour mark.

somegeek

somegeek · Post by **somegeek** » Mon Sep 25, 2006 7:29 am

Furthermore, I can play the 1.5hour clip in Windows Media Player fine with no audio syncing problems anywhere in the movie.

How does a video editing program affect the MPEG2 stream when creating chapters?

somegeek

sjj1805 · Post by **sjj1805** » Mon Sep 25, 2006 10:34 am

A few posts for you to digest:

Audo/Video Synchronisation issues

From Camcorder to DVD with VideoStudio

VS & MSP: Fix for Out of Synch Audio/Video

Trevor Andrew · Post by **Trevor Andrew** » Mon Sep 25, 2006 10:39 am

Hi

Once you have down converted your file to fit to a dvd, I would:-

1 / Start a new project. Change the settings to match the video file.
2 / Share Create Disc—Add video file.
3 / Within this burner module set my menu / chapters.
4 / When I start the ‘burn’ VS 10 may render but only the menu structure.

Using this process I am burning the disc direct from the video file and not through the project. In the same way that you used nero, from the Mpeg2 file not the edited project.

Trevor

jchunter · Post by **jchunter** » Mon Sep 25, 2006 2:21 pm

Somegeek,
I'm not clear on your procedure but if you skipped the Create Video File step, you were asking VS to downconvert in the BURN module, which could cause these problems.

After editing the HDV project, you should downconvert during the CREATE VIDEO FILE step. Then, as Trevor said, with an empty Edit timeline, select Create DVD, ADD VIDEO to select the downconverted video file and the burn is a quick process.

I would also recommend that you use Media Player Classic to view your video file prior to the burn.

Also, 1.5 hours of video could be a tight fit, even on dual-layer DVD, if you maxed out the video bitrate at 9800Kbps. You may need to edit out some video to get a video file that will fit.

somegeek · Post by **somegeek** » Mon Sep 25, 2006 3:19 pm

Thanks for the feedback guys.

The down converted file size I've been working with is 5.43g and I am using DL media. This was down converted to the settings in jchunter's doc.

I can view this video with Windows Media player and see no sync issues anywhere in the file. I can view this file in the project view and still see no sync issues.

Last night I tried opening a clean timeline and matching the project settings to my down converted video file and still see syncing issues in the DVD preview.

Also - when I drop the down converted file into the timeline I get prompted by VS10+ to change the project settings to match my video file(even though I verified I had them matching already).

Burning the video with no chapters to DVD results in a good movie - only when I go to add chapters does it have issues.

I'd like to have chapters so I can skip ahead and such... just not undertstanding why this is causing issues.

somegeek

somegeek · Post by **somegeek** » Mon Sep 25, 2006 3:23 pm

Question regarding the DVD preview window - is it what you see is what you get or can there be anomolies there with sound sync that would not appear if I burned this?

somegeek

DVDDoug · Post by **DVDDoug** » Mon Sep 25, 2006 6:46 pm

I can view this video with Windows Media player and see no sync issues anywhere in the file. I can view this file in the project view and still see no sync issues... is it what you see is what you get or can there be anomolies there with sound sync that would not appear if I burned this?

Imagine this:
You have a few bad video frames, but the audio is OK. The file is re-coded or re-multiplexed and bad video frames are thrown-out, but the associated audio remains. Now, they are out of sync. This may not be exactly what's happening in your case... just an example of the kind of thing that can happen.

Burning the video with no chapters to DVD results in a good movie - only when I go to add chapters does it have issues.

I'd like to have chapters so I can skip ahead and such... just not undertstanding why this is causing issues.

I would be surprised if simply adding chapters is causing these problems, because I think the chapter markers are in a different file (.IFO) from the actual MPEG (.VOB) on the DVD.

Editing (cutting, splicing, transitions, etc.) can sometimes corrupt MPEGs. If that's the case, you need to get a special purpose MPEG editor, such as VideoRedo or Womble. (I use Womble for editing MPEGs, and Ulead programs for almost everything else, including authoring & burning DVDs.)

somegeek · Post by **somegeek** » Mon Sep 25, 2006 7:05 pm

DVDDoug wrote:
I can view this video with Windows Media player and see no sync issues anywhere in the file. I can view this file in the project view and still see no sync issues... is it what you see is what you get or can there be anomolies there with sound sync that would not appear if I burned this?
Imagine this:
You have a few bad video frames, but the audio is OK. The file is re-coded or re-multiplexed and bad video frames are thrown-out, but the associated audio remains. Now, they are out of sync. This may not be exactly what's happening in your case... just an example of the kind of thing that can happen.

Understood. When I am viewing this file I see zero sync issues until I go to view my chapters in the DVD preview.

Burning the video with no chapters to DVD results in a good movie - only when I go to add chapters does it have issues.

I'd like to have chapters so I can skip ahead and such... just not undertstanding why this is causing issues.
I would be surprised if simply adding chapters is causing these problems, because I think the chapter markers are in a different file (.IFO) from the actual MPEG (.VOB) on the DVD.

Editing (cutting, splicing, transitions, etc.) can sometimes corrupt MPEGs. If that's the case, you need to get a special purpose MPEG editor, such as VideoRedo or Womble. (I use Womble for editing MPEGs, and Ulead programs for almost everything else, including authoring & burning DVDs.)

Again - the MPEG plays fine in whole but pukes when I go to add chapters and view in the DVD preview. Maybe I'll just burn one to see if the DVD prieview is having issues vs what gets burned.

Thanks for the reply.

Given I wanna try Womble - should I use MPEG Video Wizard DVD, MPEG Video Wizard?

Thanks,
somegeek

sjj1805 · Post by **sjj1805** » Mon Sep 25, 2006 7:20 pm

I have both.
Get the cheaper one - You only need it for cutting out your unwanted stuff such as adverts. You can then use your Ulead products to author the DVD.

jchunter · Post by **jchunter** » Mon Sep 25, 2006 7:27 pm

Somegeek,

when I drop the down converted file into the timeline I get prompted by VS10+ to change the project settings to match my video file(even though I verified I had them matching already).

It sounds as if you are dropping the downconverted video file into the EDIT timeline, prior to the burn. Is that correct? Don't do this. Use the Add Video button to select the downconverted video in the BURN module.

I do NOT encourage you to "shotgun" off on other editors. You will end up completely confused.

There is no assurance that these other editors can handle high definition video correctly and Womble has a terrible user interface.

We need to carefully examine your procedure before taking drastic measures. BTW, I have not had an audio/video sync issue with four hours of HDV, down nconverted or not.

BTW, I don't trust the VS DVD playback to do anything other than debug the DVD menus. If MPC says the video file is good, its good.

somegeek · Post by **somegeek** » Mon Sep 25, 2006 7:55 pm

Thanks, John. I'll add the file as you've mentioned here(vs drag and drop) and see what happens. Then I think I'll sacrifice a DL disc to the DVD gods and see if maybe just the preview module is having issues vs what will burn.

Thanks,
somegeek

Black Lab · Post by **Black Lab** » Mon Sep 25, 2006 8:05 pm

Then I think I'll sacrifice a DL disc to the DVD gods and see if maybe just the preview module is having issues vs what will burn.

Why not just burn to a DVD folder on your HD and view it in something like PowerDVD? It'll will be the same as what you would be burning to an actual DVD - and much cheaper than a DL!