HELP, mpeg1 audio file goes out of sync towards the end...

[numbfinger]

sorry all, newbie question here.

I converted my original .avi file(720x480), with a 29.9 frame rate(video) and 224 kbps, 34.0 kHz(audio) , to an mpeg1 format. The .avi file is perfect, no out of sync problems. After the conversion, the mpeg1 file runs smooth and fine in the beginning. But towards the end, the audio just goes out of sync, about 2-3 seconds behind.

What softwares/programs can i use, preferably free ones, to fix this? I know there's been talks of the Womble and virtualdubmod programs. Are those the only 2 that can help fix this??Anyone can help me?? gunsl1nger??

BTW, i'm using the AVI2MPG2/bbMPEG program/software to convert and encode the .avi file. If anyone is familiar and have use it before, is/are there any settings/options in there which i can set before converting/encoding?

Thanks in advance

[numbfinger]

Couple more things to add:

I tried using the Virtualdubmod program, but when i select to open the original .avi file, it brought up this msg :
- Couldn't locate decompressor for format 'dvsd'(unknown). VirtualDub requires a Video for Windows (VFW) compatible codec to decompress video. DirectShow codecs, such as those used by Windows Media Player, are not suitable. Only 'Direct stream copy' is available for this video.
- AVI: Type-1 DVfile defected -- VirtualDub cannot extract audio from this type of interleaved stream.

The video came from a MiniDV tape. Recorded on and off with pause in between. Again, the .avi file runs smooth with no audio mis-sync.

[redwudz]

A 'dvsd' Sony codec is what Windows calls a DV video file. Try installing a DV codec like the Panasonic DV Codec and programs like VDM should be able to read it with no problems.

Probably nothing to do with your problem, but VD also requires a 'Type 2' DV file, unless you are using the later versions. VDM certainly does. You can change from a Type 1 to a Type 2 with a program like the Canopus DV File Converter.

But none of those should have anything to do with sync problems. I suspect it has to do with the way the file was processed. DV generally avoids sync problems with the way it handles video and audio.

If your sync goes out at some point, then you likely have a damaged file. Or your conversion program has some major problems. DV is hard to mess up.

I don't know your conversion software or your conversion method, but even ConvertXToDVD should be able to transform a DV into a DVD with no problems. Or use TMPGEnc encoder and a authoring program. For MPEG-1 TMPGEnc encoder is freeware, and one of the better MPEG-1 encoders out there. BTW, I wouldn't use MPEG-1 format, unless all you have is a CD burner and don't mind losing quite a bit of quality.

And we were all 'newbies' once. Live and learn. And welcome to our forums.

[numbfinger]

redwudz,

thanks much for your reply and input. Yeah, i'll try to read on it more. Sorry, i'm not really familiar with this video/audio stuff. Just want to get the easist and simplest way to compress an .avi file. I thought all was set, until i replayed the .mpeg file and uh-oh...

I'm using AVI2MPG2/bbMPEG as my conversion program. But not sure if you've used it or not.

Btw, upon scouring the site, i found this very similar thread:
https://forum.videohelp.com/viewtopic.php?t=240550
I think the fella had the same problem as me. Except his audio ended sooner, whilst mine is delayed.

[numbfinger]

UPDATE:
i finally figured out what's wrong. Apparently it's the conversion program/software that i'm using to encode the .avi file. I tried a program HT Mpeg Encoder 7.0(for $50) and it solved it all. Would like to find a freeware, but i think it's worth it. Now all the audio is in sync thruout.

[redwudz]

Before you spend all that money on a program that I have honestly never heard of, I would try ConvertX. For one reason, it's cheaper and has a known track record.

Maybe just me, but a $50 program like that sounds suspicious. It may be made of freeware components or it might be the greatest thing out there. But, if so, you would likely find more about it on our site. And there is no reason that all that can't be done by a few freeware or shareware programs for a lot less.

There is also a older freeware of ConvertX called DivxToDVD that is still available and works well.

BTW, I use ConvertX for quickie conversions for DV to DVD. If I want better quality, I use a standalone encoder and authoring program. That way I have more control of the final output. I use TMPGEnc Plus encoder and TMPGEnc DVD Author, but there are other programs that do as well or better.

[numbfinger]

redwudz,
thanks for your reply. Yes, i know there are Freewares out there that could do the trick. But i've d.l. and tried several that are on this website.
Well, i tried d.l. and installing the DivxTODVD, but it only give an option to copy straight to a DVD burner from the camcorder, instead to my hard-drive. And i don't have a DVD burner.
As far as ConvertX, i haven't tried it yet. Maybe it'll help.
Yeah, i know i shouldn't pay that much, but as far as i'm concerned, the problem was solved, on the first go around. I tried the trial version and it was simple/straightforward process.
There are other more pricey programs out there.

Also, i wanted to upload the files to a website, ie. youtube or google, and i needed a compression program.

Anyways, thanks again for the input/suggestions. Learn a lot from this website though.