captured video out of synch with audio

[Guest]

I made it through the process this time from start to finish with no
problems. I even saved my movie and burned it a DVD! Perfect! Until I
watched it back on DVD and saw that the audio is behind the video. It is not
so bad that the songs that go with the still pictures are off a little from
what they previewed in Media Player and WMM. But this time I used captured
video from my camcorder. I have 22 first graders giving a message to their
moms and it plays perfectly on the computer. ON the DVD each child's voice
is with a different face because the audio is behind. HELP!! I am supposed
to present this as a Mother's Day gift to 22 moms next Friday. How can I
make the sound match what I am seeing on the movie? Thank you for solving
this problem.

 

[Guest]

I take it the camcorder movie is saved to your PC in .AVI format and this is
the file that "plays perfectly on the computer". It's the DVD that doesn't
play properly in either your PC or in your DVD player?

Whichever you did below, try the other....

A) ran the .AVI file through your software to create the DVD

B) created a DVD "spec'd" MPEG2 file from the .AVI file, tested that for
sync, then ran that file through your software to create the DVD.


If that doesn't work try changing the audio compression to MPEG. You may
have to create a movie template with all the video and audio specs first or
you may just be able to change the audio compression at some step in your DVD
creation process.

Anyway, try the 1st option and if that doesn't work report back with the
software you're using, the format of the "raw" file (.AVI?) and all the audio
settings your software is using to create the DVD. (ie: dolby, LPCM, MPEG 2
layer etc.), (48Khz), (bit rate ie: 224 kbps) etc.

NOTEKY

 

[Guest]

I think you are right on target as far as what my problem is. However, I am
afraid this is getting too advanced and I am not really educated about this
when it gets really technical. Yes, it is my camcorder movie that is saved
to my PC in WMM, but I am not sure if it is .avi format. I think it is. And
yes, it does paly correctly in WMM and in the preview in the Sonic MYDVD
program. It is the DVD that does not play properly in the DVD player. I
contacted HELP through the SONIC MY DVD support and this is what I was sent:

Audio out of Sync- DVDit/MyDVD::
This is usually caused by video frames being dropped either while the file
is being digitized into the computer or when the file is converted into the
Mpeg format. This happens outside of the MyDVD or DVDit! software and is
not a bug with MyDVD or DVDit! By following the DVD-Specification for the
most compatibility with DVD players, Sonic's software "demuxes" the
interleaved Audio and Video files. Demuxing is basically pulling the files
apart and putting them back together into a .VOB file. It is common for
these files to preview in sync with Windows Media Player but are out of
sync on the final dvd. The longer the file, the more progressively the file
falls out sync. This is because the video is following the audio timestamp
for playback. When the audio and video are separated, the video is shorter
than the audio due to the dropped video frames.
The audio from your original files are the wrong sample rate. This usually
happens when audio files are exported from an editor or camera at 32k or
various other sample rates that are non-DVD compliant. Audio for DVD must
be at 48k/16 bit and VCD's must be 44.1k/16 bit. For more information on
this please refer to the articles Preparing DVD Files for MyDVD and
Preparing VCD Files for MyDVD.
We advise you use Constant Bit Rate (CBR) instead of Variable Bit Rate
(VBR) to encode the files into Mpeg. Many encoders drop frames when using
VBR to encode files. They are treating the VBR encode as more of a Variable
Frame Rate then Variable Bit Rate. MyDVD only captures in CBR. The only
discrepancy with MyDVD would be an analog capture device where the hardware
would encode through device VBR, such as older USB devices.
System performance is too slow. This can be caused by a Hard Drive which is
fragmented, has a slow RPM, lack of adequate memory and/or the CPU speed is
too slow for video capture. Please refer to your Sonic software's Help File
for system requirements and ways to improve system performance.
Some capture devices drop frames upon capture and there is no workaround
but to use a supported capture device.
It could be as simple as the media. DVD-/+RW's have a lower reflectivity
than -/+R's. This makes it harder for the laser in the set top player (or
any player) to reflect back into the reader to replay your data/video. It
also make sit more difficult for the player to play consistently and
continuously and can possibly throw the audio out of sync.


**The problem is...I can't make heads or tails of any of this. I don't know
if you can walk me through it, or if I should just give up!
Thanks for your patience and your advice.

 

[PapaJohn \(MVP\)]

thanks for sharing the Sonic support info.... my experience with Sonic
support is that it's hard to get, and often not all that helpful.

 

[Guest]

Give up?!!

Here's what I think you did,

- You placed the .AVI file (your raw movie file) in the timeline of
MySonicDVD then selected burn to DVD.

Here's what I suggest you try,

- Place the .AVI file in the timeline of MySonicDVD then select "make movie"
(or whatever the final step is called) only this time save the movie to your
hard drive not a DVD. In this step you should be able to choose what format
you want for your finished movie; you should be able to choose NTSC DVD (not
DV).

If this new .MPG file plays in sync on your hard drive, then place that file
into the timeline of MySonicDVD and select burn to DVD.

If the new file isn't in sync on your hard drive, we'll have to try
something else.

Note: I am not familiar with the layout of MySonicDVD so don't be looking
for buttons/menus or drop down boxes that show what I've said. You'll have to
navigate around MySonicDVD and look for something (menu/drop down/button)
that appears to be what you have to select to do what I've said.

NOTEKY