Audio/Video Syncing Issues [Archive] - VideoReDo MPEG Editor Forums

View Full Version : Audio/Video Syncing Issues

kem

06-18-2007, 06:39 PM

I'm currently running a trial of VRD+ and after some excellent support from Dan I have it up and running perfectly. VRD+ is working exactly as I expect it to but I'm still having a problem once I burn the video to a DVD. Here is my situation:

1) Start with .tivo file transferred to my PC by Tivo Desktop.
2) Load into VRD+ and use the Ad-Detective and cut out the ads.
3) Save as mpg file. This file plays perfectly on several test PC's.
4) Use Nero Vision (most current version available) to burn video to DVD.

At this point when I play the DVD back on a PC or my AV system DVD player the audio is waaaaaay out of sync with the video. It is out of sync by varying amounts throughout the show by minutes sometimes.

I would really appreciate any idea's or suggestions that would help me solve this as I'm running out of the raw materials for coasters. :)

Thanks!

phd

06-19-2007, 02:28 AM

kem

06-19-2007, 02:51 AM

Are you authoring to a folder on your hard drive first, then burning a disk as 2 separate operations?

Is Nero reencoding your video?

How long does it take to author to a folder on your hard drive with Nero.

I'm not sure I understand your first question; I'm following the procedure as outlined in my original post:

1) Transfer video from Tivo to PC.
2) Open file with VRD+ and cut out ad's
3) Save file to HD using VRD+ as mpg (also tried .vob)
3a) This mpg file plays perfectly on a PC with WMP and Nero.
4) Open mpg file in Nero Vision. It "TransCodes" it and burns the DVD.

When I play the DVD the Video/Audio are out of sync.

It takes Nero about 10 minutes (guesstimate, I've never payed much attention to the exact time) to transcode and burn the DVD. I'm just working with a 1 hour video for testing purposes.

I'm not certain I've really answered your questions, but I will try to clarify any points I can, just let me know.

Thanks! - Kelly

phd

06-19-2007, 02:56 AM

kem

06-19-2007, 02:40 PM

Sometimes computers can have problems authoring and burning in one single operation.

Try simply authoring to a folder on your hard drive. This will create the VOB, IFO and BUP files in a folder opn your hard drive.

Play back the DVD folder on your PC. Is it it in-sync?

Then burn the DVD folder to a DVD as a separate operation. Is the burned DVD in-sync?

I apologize for my ignorance but I just don't understand what you are trying to tell me to do. What is the definition of the term "authoring"? (This is the newie section :) )

Is there some way in Nero Vision to tell it to ourput to files on the HD and then turn around and burn those files? I guess what I'm asking is this...

Given a perfectly working .mpg file out of VRD+ what *exactly* would I do next to "author", then would I use Nero Vision to burn? Do I need other tools besides VRD+ and Nero?

Thanks a LOT for your patience and help!

- kem

RickN

06-19-2007, 03:49 PM

Hello Kem!

Welcome!

I use VRD to edit commercials and save the final file as elementary streams.

I then use Muxman to author the dvd and then use Nero burning rom to burn the DVD. I'm a newbie too and can't really describe what the authoring entails. But, bottom line, Muxman creates a Video_TS folder from your file that includes IFO, BUP, and VOB files. Nero or other software can use this folder to burn directly to dvd without reencoding the file. A much quicker process! :-)

You can download Muxman at the URL below:

http://www.afterdawn.com/software/video_software/video_tools/muxman.cfm

BTW, Nero Express was bundled with my DVD drive. To save time, I searched the nero folder and set up a direct link to Nero Burning Rom on my desktop. Saves a few steps to go directly to Nero Burning Rom rather than starting with Nero Express.

HTH!

Rick

kem

06-25-2007, 03:32 PM

FYI:

I have found a fairly simple, although time consuming, method to "fix" this issue...

1) Use VRD+ and output an mpg.
2) Launch Nero Vision and open the mpg, then have Nero Vision save it.
3) Then make a Nero Vision DVD using the mpg created from Nero Vision in step 2.

I would really like to understand why the mpg that comes right out of VRD+ doesn't work with Nero Vision since it would save me a lot of time but at least I've found a formula that consistently works.

Thanks for everyone's input!

- Kelly

Anole

06-25-2007, 07:03 PM

The output video format from the TiVo is not standard DVD format.
NeroVision wants to make standard format DVDs, only.
So, NeroVision insists on transcoding, re-encoding, or otherwise molesting your video, to suit its wishes.
This takes quite a bit of time, and makes 720x480 (for NTSC).
Several hours is not uncommon, depending on video size and computer speed.

Most (99%+) DVD players can play some alternate formats, like what the TiVo puts out.
Well, maybe if your DVD player is more than five years old, it might have a problem...
So, I author* in the not-quite-standard format that my video is presented in: 544x480
Time to author a 4gb video is on the order of 10 minutes.
That's an almost-full DVD: consisting of two movies, or five TV shows.

I've been using DVD Labs Pro for several years.
They also have a Standard and a Studio edition.
Evaluation versions are available.
I'm sure there are a number of other authoring programs that don't re-encode , too.

The bottom line is, if you have TiVo files, don't use NeroVision.
I do use Nero for burning the disc. Here's my rant (http://www.videoredo.net/msgBoard/showthread.php?t=3744) on that.

* for the purpose of this discussion, Authoring is defined as:
Reformatting raw video and audio files into the required format and file structure to make a DVD.
Output is a VIDEO_TS folder with all the proper files, ready to burn.
Burning is a separate operation.