Problem in keeping sound in sync using TMPGEnc

I'm trying to keep sound in sync by using TMPGEnc to try and render a
mpeg to keep the sound in sync.
The problem is that at the start of the 80 minute video clip the sound
is in sync but at the end of the video clip the sound is out of sync
by about 2 seconds. The sound is lagging behind the picture.

Are there any options in TMPGEnc that will help keep the sound in sync
with the picture?
Is there another program I can use to re-render the mpeg file to keep
the sound in sync with the picture.
I'm rending the video as a mpeg suitable for PAL DVD.

Regards Brian

Brian

Sounds like dropped video frames to me. Are you positive the sound/video are
in synch on the source?

Are you trying to convert an NTSC video to PAL? If so, have a look here:
http://www.dvdrhelp.com/guides.php?h...lect=4;41#4;41


"Brian" <> wrote in message
news:...
> I'm trying to keep sound in sync by using TMPGEnc to try and render a
> mpeg to keep the sound in sync.
> The problem is that at the start of the 80 minute video clip the sound
> is in sync but at the end of the video clip the sound is out of sync
> by about 2 seconds. The sound is lagging behind the picture.
>
> Are there any options in TMPGEnc that will help keep the sound in sync
> with the picture?
> Is there another program I can use to re-render the mpeg file to keep
> the sound in sync with the picture.
> I'm rending the video as a mpeg suitable for PAL DVD.
>
> Regards Brian
>

Colon Terminus

"Brian" <> wrote in message
news:...
> I'm trying to keep sound in sync by using TMPGEnc to try and render a
> mpeg to keep the sound in sync.
> The problem is that at the start of the 80 minute video clip the sound
> is in sync but at the end of the video clip the sound is out of sync
> by about 2 seconds. The sound is lagging behind the picture.
>
> Are there any options in TMPGEnc that will help keep the sound in sync
> with the picture?
> Is there another program I can use to re-render the mpeg file to keep
> the sound in sync with the picture.
> I'm rending the video as a mpeg suitable for PAL DVD.
>
> Regards Brian
>

I found that saving the audio out to a separate file (wav) first using
VirtualDub (if I remember right) and then Tempgnc worked pretty well.

Laserdogg
LD\DVD Collection
www.dvdtracker.com/~laserdogg

Laserdogg

The original video source are out of sync, that's why I'm using
TMPGEnc to try and get the sound in sync with the picture.
I'm not certain if the original is in NTSC, I'll check.
Thanks for the web site links.

Regards Brian


"Colon Terminus" <> wrote:

>
>Sounds like dropped video frames to me. Are you positive the sound/video are
>in synch on the source?
>
>Are you trying to convert an NTSC video to PAL? If so, have a look here:
>http://www.dvdrhelp.com/guides.php?h...lect=4;41#4;41
>
>
>"Brian" <> wrote in message
>news:.. .
>> I'm trying to keep sound in sync by using TMPGEnc to try and render a
>> mpeg to keep the sound in sync.
>> The problem is that at the start of the 80 minute video clip the sound
>> is in sync but at the end of the video clip the sound is out of sync
>> by about 2 seconds. The sound is lagging behind the picture.
>>
>> Are there any options in TMPGEnc that will help keep the sound in sync
>> with the picture?
>> Is there another program I can use to re-render the mpeg file to keep
>> the sound in sync with the picture.
>> I'm rending the video as a mpeg suitable for PAL DVD.
>>
>> Regards Brian
>>
>

Brian

Thanks Laserdogg,
I've never tried working with
seperate audio files, but worth a try.

Regards Brian

"Laserdogg" <> wrote:

>"Brian" <> wrote in message
>news:.. .
>> I'm trying to keep sound in sync by using TMPGEnc to try and render a
>> mpeg to keep the sound in sync.
>> The problem is that at the start of the 80 minute video clip the sound
>> is in sync but at the end of the video clip the sound is out of sync
>> by about 2 seconds. The sound is lagging behind the picture.
>>
>> Are there any options in TMPGEnc that will help keep the sound in sync
>> with the picture?
>> Is there another program I can use to re-render the mpeg file to keep
>> the sound in sync with the picture.
>> I'm rending the video as a mpeg suitable for PAL DVD.
>>
>> Regards Brian
>>
>
>I found that saving the audio out to a separate file (wav) first using
>VirtualDub (if I remember right) and then Tempgnc worked pretty well.
>
>Laserdogg
>LD\DVD Collection
>www.dvdtracker.com/~laserdogg
>

Brian

"Brian" <> wrote in message
news:...
> The original video source are out of sync, that's why I'm using
> TMPGEnc to try and get the sound in sync with the picture.
> I'm not certain if the original is in NTSC, I'll check.
> Thanks for the web site links.
>
> Regards Brian
>
>
If the sound is off by the same amount through the file, then you just need
to change a sound start delay setting, if this is mpeg then use TMPGenc, I
think there is a sound offset setting in advanced-source range setting, if
the file is avi, then use Virtual Dub and it has a sound start setting. Use
positive or negative numbers depending on which way the sound need
correction, try experimenting it's cheap.

If the sound delay changes as the file plays, then the sound is to long or
short. You will need to de-mux the sound file and use a sound editing
program like Sound Forge to change the length of the sound file and then
multiplex it back with the video, usually very time consuming to get it
right. Check in the "guides" here- http://www.doom9.org and also at this
site-
http://www.dvdrhelp.com for more info on audio-video sync issues.

Mike T

Mike T

Thanks Mike and others for your help.

I don't have the orginal video, only an mpeg of it.
The original sound is of the mpeg file is out of sync.
If I render a few minutes of the video using TMPGEnc then the sound is
in sync.
If I use TMPGEnc to render the whole video which is 80 minutes long
then near the end the sound is out of sync.

I'll consider chahging the length of the sound.
The other option of thought of was to split up the video and render
short parts of video then have all the short video'st play
continously. I'm not certain if it's possible to join up the video's
without having to re-render the video again.

Regards Brian




"Mike T" <mtallent@u$-i$p.net> wrote:

>
>"Brian" <> wrote in message
>news:.. .
>> The original video source are out of sync, that's why I'm using
>> TMPGEnc to try and get the sound in sync with the picture.
>> I'm not certain if the original is in NTSC, I'll check.
>> Thanks for the web site links.
>>
>> Regards Brian
>>
>>
>If the sound is off by the same amount through the file, then you just need
>to change a sound start delay setting, if this is mpeg then use TMPGenc, I
>think there is a sound offset setting in advanced-source range setting, if
>the file is avi, then use Virtual Dub and it has a sound start setting. Use
>positive or negative numbers depending on which way the sound need
>correction, try experimenting it's cheap.
>
>If the sound delay changes as the file plays, then the sound is to long or
>short. You will need to de-mux the sound file and use a sound editing
>program like Sound Forge to change the length of the sound file and then
>multiplex it back with the video, usually very time consuming to get it
>right. Check in the "guides" here- http://www.doom9.org and also at this
>site-
>http://www.dvdrhelp.com for more info on audio-video sync issues.
>
>Mike T
>

Brian

On Tue, 3 Feb 2004, Brian wrote:

> Thanks Mike and others for your help.
>
> I don't have the orginal video, only an mpeg of it.
> The original sound is of the mpeg file is out of sync.
> If I render a few minutes of the video using TMPGEnc then the sound is
> in sync.
> If I use TMPGEnc to render the whole video which is 80 minutes long
> then near the end the sound is out of sync.
>
> I'll consider chahging the length of the sound.
> The other option of thought of was to split up the video and render
> short parts of video then have all the short video'st play
> continously. I'm not certain if it's possible to join up the video's
> without having to re-render the video again.
>
> Regards Brian

If you have the individual segments rendered in the same format of MPEG,
then you can use TMPEG's "Merge and Cut" feature to join them back
together again as one big file. Doing it this way only takes a couple
of minutes to re-attach all the files together. This is what I used to
use to make VCDs before I got a program that let me use individual files
rather than having to put them all together as one big 80 minute file.
Because all the files are already in the same format, TMPEG doesn't have
to re-convert anything, it's just putting them all together. Great little
feature! You DO, however, have to re-render the files when you correct
the sound. The Audio Gap correct feature is also really simple to use,
just take a bit of trial and error to figure out which way (+ or -)
it's off, then figuring out how MUCH it's off... (Oh, and in case you're
wondering what program I use to make VCDs NOW, it's Ulead DVD Movie
Factory - super easy to use, and lets you put together really snazzy
looking discs with menus and everything - but I wouldn't be anywhere
without my beloved TMPEG!)

- Sean

Sean McLean