Sync Problems

[astral4travel]

Somtimes after burning my project, on parts of the disc there will be a problem with the sound being out of synch with the video. In other words, the sound is ahead of the person speaking! In some ways it is almost like watching a badly dubed Kung Fu movie from the 70's. Anyone experience this? It is frustrating.

Thanks, Michael

[astral4travel]

I haven't noticed this problem on Files that were captured using my ATI card. Mostly, I think it was when I would hook up the source device (VCR) or camcorder to the Pioneer stand alone DVR and record to a DVD-RW. Then I would then transfer it to "EMC-Capture". Then I would work with it in Videowave.. I may stick with capturing with the computer's ATI card. Thanks for all of the advice, and I will let you know if there are anymore glitches. Michael

[astral4travel]

Most of the files I use are AVI files. But that particulat file that I had the synch problem with was copied from my stand alone DVR. Maby it was a VOB file. Could that cause a sync problem?

[dvdmama13]

I've found two ways to fix this problem when I have had it as well. ONE - When capturing, there are sometimes windows of scences that make up the "capture" you are currently doing. If you delete the windows scenes at this point to adjust the video clip to be exactly what you want, it can mess up the sync. Instead, use "Adjust Duration" in Videowave. TWO - I just captured something that was at the very beginning of the tape and tried to capture it again but this time I moved forward 2 seconds on the tape so I was already 2 seconds into the scene and it fixed the sync problem. Hope this helps...

[Guest mlpasley]

From what I've read, the main reason for 'stripping' a new DV tape is so that the time code is recorded to the entire tape. I hope I wasn't one of those who gave you a hard time about it. If I was, I've now 'reformed.'

 

For example, if I record a scene, stop my camcorder and turn it off, the time of the first recording is put onto the tape.

 

When I turn the camcorder back on and record more onto the tape, the timecode resets to zero for the new portion of the tape. Not only is it hard to know exactly how much is left on the tape, it's easy to forget that there is more than one event on the tape.

 

I figure if I have trouble reading the timecode, the same may be true of the program.

 

So unless I'm in a hurry, I too record from the begining to the end of the tape.

[Guest mlpasley]

I've found two ways to fix this problem when I have had it as well. ONE - When capturing, there are sometimes windows of scences that make up the "capture" you are currently doing. If you delete the windows scenes at this point to adjust the video clip to be exactly what you want, it can mess up the sync. Instead, use "Adjust Duration" in Videowave. TWO - I just captured something that was at the very beginning of the tape and tried to capture it again but this time I moved forward 2 seconds on the tape so I was already 2 seconds into the scene and it fixed the sync problem. Hope this helps...

 

If you're using a DV camcorder tape, the timecode can occasionally be incorrect when you tape.

 

Many camcorder manufacturers recommend that BEFORE you tape you put the tape in the camcorder and record all the way to the end to imprint the time code continuously onto the tape. Tape the lenscap or put something in front of the lens to tape 'black'. Then rewind the tape and tape your event.

 

In the other person's case, I suspect that the problem may be that the files were recorded on a DVD recorder which means that they are probably mpeg2. Since there are no set mpeg2 standards, errors can creep in when you have to decode and encode the files for editing and burning.

[james_hardin]

I would not expect it from the file itself. These are usually very good files. It might also depend on if you Captured the file or just Renamed it…

 

The problem seems to come in during the rendering process. I don't know exactly what causes it, but it is more prevalent with mpeg files than it is with AVIs.

 

You will just have to play with some of the tips I mentioned and see what seems to work best for you.

 

I know there is no magic 'fix it' button and that all software has problems with this to some extent.

 

 

Most of the files I use are AVI files. But that particulat file that I had the synch problem with was copied from my stand alone DVR. Maby it was a VOB file. Could that cause a sync problem?

[Guest mlpasley]

Some people have found that by doing a File\ Output production to..... DVD Camcorder (a DV AVI file) in VideoWave, the audio/ video sync problem doesn't occur on the final DVD.

 

Of course, this isn't guaranteed, so you might want to use a DVD RW.

[astral4travel]

I have had the synch problem in the middle of my production that was edited heavily. In other words alot of scenes were removed because of bad filming, ect. Now, all of these were AVI files captured using a analog Canon 8mm camcorder. Would striping as its called help with non-digital "Hi8 tape? It seems that the scenes that were not heavily edited are in perfect synch with the sound. Those would be the scenes that were prior to the ones that were heavily edited. Just for the record, I edited by splitting scenes before the questionable scene and at the end. Then I used the delete "X". Hope all this makes sense, as I have alot more analog conversions to do yet, and I will start using another software if this continues. Help please!

[james_hardin]

I have the same problem. Can't find any advice from Roxio to solve...

 

I also sometimes get a problem whre the sound volume that is burned increaes and decreases (like a wave). Thsi usually happend on VCDs where the sync problem I have seem on DVDs.

Standard Procedures for Sync:

 

Plenty of HD space – 10/20gb

 

Defrag before render or burning

 

Capture your own source files

 

Use AVI files

[riverway]

Somtimes after burning my project, on parts of the disc there will be a problem with the sound being out of synch with the video. In other words, the sound is ahead of the person speaking! In some ways it is almost like watching a badly dubed Kung Fu movie from the 70's. Anyone experience this? It is frustrating.

Thanks, Michael

I have the same problem. Can't find any advice from Roxio to solve...

 

I also sometimes get a problem whre the sound volume that is burned increaes and decreases (like a wave). Thsi usually happend on VCDs where the sync problem I have seem on DVDs.

[Guest mlpasley]

Now, all of these were AVI files captured using a analog Canon 8mm camcorder. Would striping as its called help with non-digital "Hi8 tape?

 

Help please!

 

You need to understand the difference between DV AVI files from a digital camcorder and files from a capture card. These problems are not unique to this program.

 

When files are captured from a digital camcorder, the sound is actually included in the video file. Usually when files come from a capture card, the sound and video are imported as two separate files. So when you edit it, the time code isn't constant and error can creep in.

 

If the files captured are mpeg2 files, not all mpeg2 files are the same. There are not 'standards' in the industry, so when you edit and the program has to decode and reencode the mpeg2 files, errors can creep in.

 

Sometimes, it's a playback problem on your computer, but you can only find if that's the problem by burning to an DVD RW and playing the DVD.

 

The easiest way to decrease your problems would be to buy or borrow a digital camcorder that can play and export analog Hi8 tapes to your computer via a firewire as DV AVI files. The audio would then be an integral part of the video file (native audio.) In that sense, you have an advantage because that option doesn't exist for people who recorded to VHS-C tapes.

 

Does that help any?

[REDWAGON]

I think ml the reason I got some negitive feedback on the "striping" of DV tapes was probably no one want to take the time to do it. As I remember one reply suggested that it wears out the camcorder a lot faster and the battery wears down too fast. Well, I can see why running the camcorder through a new DV tape might use up some of the "wear" but one should never try striping with just the battery. I have been striping all of my DV tapes with the same camcorder (probably some 50 or so) and the camcorder still works fine. And plug in the AC supply to strip, not the battery. I purchase several DV tapes at a time and when I am not using the camcorder, I usually lay down the entire time track on each one, then mark a small "s" on the body of the DV tape to remind me that I have striped it.

 

Interested to know what might have changed your mind about striping, ml. Did you run into a typical problem at one time because the time track had been reset to 0 several times ? My case was I was doing a video on several different rose gardens and wanted to make a complete video of the entire set. Well, as you can imagine I did run into the time problem when I went back to put it all together. The camera just didn't know where I stopped and started on each segment as there were many "0" time starts. I think that makes sense to you ml but for others maybe not.

 

Frank....Love that squirrel !

 

 

 

 

 

Frank..........

[Guest mlpasley]

Interested to know what might have changed your mind about striping, ml. Did you run into a typical problem at one time because the time track had been reset to 0 several times ? My case was I was doing a video on several different rose gardens and wanted to make a complete video of the entire set. Well, as you can imagine I did run into the time problem when I went back to put it all together. The camera just didn't know where I stopped and started on each segment as there were many "0" time starts. I think that makes sense to you ml but for others maybe not.

 

Frank....Love that squirrel !

 

Frank..........

 

Well, first I need to learn how to spell, since I put 'stripped' and not 'striped.'

 

I think your post about striping the tape made me start to read up on it. I was convinced however, when I almost taped over a family event because it appeared that there was only one event on the tape. When the first event was over, I got the bluescreen and the computer stopped capturing. (With my camcorder, you have to fast forward past the bluescreen to find the next event.)

 

Luckily, I just put the tape on the shelf and used a new tape for the next event. Then when I went looking for the skipped event, I discovered that 'quirk' in the way the camcorder resets the timer and leaves a bluescreen in between events. (Although technically, I don't think it's supposed to do that.)

 

Now with the striping, I just let the tape keep playing for a minute to make certain that there is not another event on the tape.

 

He is a cute little flying squirrel isn't he? Did you know that when this country was young, boys used to take them in their pockets to school? They're native to this country, fit in the palm of your hand, are nocturnal and like people. (end of history lesson.)

[astral4travel]

I really don't think that my problem is indeed a capture problem. The "raw" unedited footage that was captured with the capture card from the camcorder is indeed in synch. I checked the original files in Videowave. It is when I created a ISO file and then burned it to DVD-RW that I noticed the problem. Thanks for all the help. I would like to put this topic to rest!

[grandpabruce]

Well, first I need to learn how to spell, since I put 'stripped' and not 'striped.'

 

I think your post about striping the tape made me start to read up on it. I was convinced however, when I almost taped over a family event because it appeared that there was only one event on the tape. When the first event was over, I got the bluescreen and the computer stopped capturing. (With my camcorder, you have to fast forward past the bluescreen to find the next event.)

 

Luckily, I just put the tape on the shelf and used a new tape for the next event. Then when I went looking for the skipped event, I discovered that 'quirk' in the way the camcorder resets the timer and leaves a bluescreen in between events. (Although technically, I don't think it's supposed to do that.)

 

Now with the striping, I just let the tape keep playing for a minute to make certain that there is not another event on the tape.

 

He is a cute little flying squirrel isn't he? Did you know that when this country was young, boys used to take them in their pockets to school? They're native to this country, fit in the palm of your hand, are nocturnal and like people. (end of history lesson.)

 

Typing correction by me, ml.

[REDWAGON]

I very long time ago on the old forum, I suggested doing the DV tape "striping" as it is called and I got all kinds of rebuttal from others saying that striping the entire DV tape prior to recording on it was just a waste of time. Well, I have never used a brand new DV tape WITHOUT FIRST striping it and have never had any problems with sync problems. The reason that striping a tape was originally advised by most all camcorder editing software was mostly for recording in the "batch" method. Then when one part of the tape was edited it knew exactly where to begin no matter what part of the batch recording one wanted to edit. That way there was never any doubt where the time code was on the recording when recording, stopping, starting a new recording and so on.

 

Frank.............