sound syncronization

highpockets · Post by **highpockets** » Fri Feb 10, 2006 1:18 pm

I have wasted 3 DVDs because the sound is out of sync with the lips of the speakers. What have I done ? I did 4 with no problem, then tinkered with the settings after reading the " recommended proceedures" Should the audio settings be for format, type, frequency etc? All my captured files are analog video from an 8 mm camera. I tried to follow those "recommended proceedures" on this board, but apparently I have set something incorrectly.

maddrummer3301 · Post by **maddrummer3301** » Fri Feb 10, 2006 2:19 pm

What Version of VS are you using?

MD

GuyL · Post by **GuyL** » Fri Feb 10, 2006 4:57 pm

If you provide your capture settings, project settings and produced file settings we may be able to give you some insight.

DVDDoug · Post by **DVDDoug** » Fri Feb 10, 2006 5:46 pm

DVDDoug wrote:There seems to be many different causes / solutions for this problem. Search the forum for "sync" and you'll find lots of discussion and suggestions.

...audio settings be for format, type, frequency etc?

My guess is, that probably has nothing to do with it.

But, your overall A/V file format might have something to do with it... So, try to answer the questions above about your capture settings, hardware, & methods, etc.

If there is no sync problem before rendering to DVD, you have a corrupt video file. The corruption is can cause sync problems when the file is re-coded or re-multiplexed to the DVD format.

I have wasted 3 DVDs...

Can your burner burn DVD-R/W? You could end-up wasting quite a few DVDs while you're getting your set-up sorted-out. ...If you were learning a new desktop publishing program, you might need a few extra sheets of paper in case it didn't come-out quite right the first time...

highpockets · Post by **highpockets** » Fri Feb 10, 2006 6:35 pm

Using VideoStudio 9.

NTSC drop frame (29.97fps)
MPEG files
24 bits,720x480, 29.97 fps
frame-based
MPEG-1,4:3
video data rate: variable max 8000
LCPM audio 48000 hz stereo

GuyL · Post by **GuyL** » Fri Feb 10, 2006 6:46 pm

If you are editing this file format you are asking for trouble in this regard. It does't take much to get sync problems once you edit MPEG files. I would recommend you capture to AVI if you are doing any editing.

Also, your file is framed based and if you attempt to play the DVD on something other than a computer you will have issues. You want upper/lower fields when producing a DVD that is "safe" for all players.

Also, are you sure you are using MPEG-1 as listed in your properties? MPEG-2 is used for DVD.

Post by **Ken Berry** » Fri Feb 10, 2006 8:26 pm

Can you also clarify whether the properties you gave us were for a captured file or for the project i.e. that you are capturing and then producing a file with these properties by pressing Share > Create Video File? I ask because if your analogue capture device will allow it (and normally it should), you should be capturing to mpeg-2 format, and (probably) Upper Field First. That will then, with Share > Create Video File > DVD, produce a fully compliant mpeg-2 file which can be burnt to DVD. And keep the audio as LPCM if you can afford the space, rather than mpeg layer 2 audio, particularly if you are in an NTSC country as mpeg audio is not part of the NTSC DVD standard.

The file properties you gave (mpeg-1 frame based) are really for production of a relatively low-quality VCD. If you are inserting mpeg-1s into the burning engine, the VS9 will be re-rendering them on the fly, during the burning process, to produce an mpeg-2 which it can then go on to burn. This re-rendering in itself can often cause out-of-sync problems, and one way of avoiding this is first to produce a DVD-compliant mpeg-2 as I described above. And when you insert this mpeg-2 into the burning engine, make sure you also check the box beside 'Do not convert compliant mpeg files' in the little cogwheel icon in the bottom left of the burning screen.

highpockets · Post by **highpockets** » Fri Feb 10, 2006 10:25 pm

The properties in all three; capture, edit and share are the same. I thought I set the frame for upper field first since I am capturing analog video. Under the media type should I not be NTSC -DVD? Not sure where the MPEG-1 came from. No wonder I am having problems. Not sure why I was able to produce 4 good DVDs and come back in a couple of days and fail ! Too much tinkering I guess.
I am thinking I should go through the whole process again being careful to set the properties properly in each step as I progress. I am not sure now which one of my files is a "clean " capture or if I have one without capturing again.
The instruction booklet does not indicate which is the preferable format for capture of analog. I chose MPEG since I have a 80GB HD, but it has plenty of room for now.

GuyL · Post by **GuyL** » Fri Feb 10, 2006 10:52 pm

If you are not doing any editing from your capture, you are on the right track in setting your capture, project and output file settings to the same at an MPEG-2 compliant setting. This should provide you with a problem free process.