Audio goes out of sync when converting...

[hiimbored]

Hi, I'm converting 2 AVI files to DVD, but when I do this it goes out of sync. When I start to watch the MPEG2 file after converting, it appears to hang a couple seconds at the very beginning before the timer starts. So from then on, it is about 5 seconds out of sync. I kind of remember this happening to me before, but I don't know how to fix it. Can anybody help me out? Thanks!

[Forum Troll]

Demux the audio to an uncompressed WAV before converting. AC3 and vbr MP3 tracks are common in AVI, they can cause sync issues to some encoders.

[Baldrick]

It would also help if you told what you convert with...and what is your source video and audio codec, identify with latest gspot.

And try ConvertXtoDVD. Handles most avis fine.

[hiimbored]

I am converting with TMPGenc and it always has worked fine for me. The video codec is Divx and the audio is AC3. When I start watching the converted file, it stays at 0:00 on the clock for about 4 seconds but the AVI doesn't. I think that is what is putting it out of sync, but I don't know how to fix it...

[mwkurt]

Download AVImuxGUI and load your DIVX into it. Double click the DIVX file. In the bottom window you will see how far off you audio is from your video. Highlight the audio then select save. Give you file a name and save it. Now try making a DVD from this DIVX file. It should stay in sync. Can't be more easier than this!
Mark

[hiimbored]

Download AVImuxGUI and load your DIVX into it. Double click the DIVX file. In the bottom window you will see how far off you audio is from your video. Highlight the audio then select save. Give you file a name and save it. Now try making a DVD from this DIVX file. It should stay in sync. Can't be more easier than this!
Mark

Sorry, I'm still kind of lost. I opened it with AVI Mux GUI and here is what it says for the audio:
(default) audio: AC3 (192 kbps CBR, 2 Ch, 48 kHz, bad: 81599, delay: 3399 ms, 187 MByte)
So now what do I do? Thanks for your help everyone BTW.

BTW: It is not the original AVI file that is the problem, it is the MPEG2 file that I get after encoding that is out of sync. The avi file is completely in sync already.

[mwkurt]

You highlight the audio in the lower box. Down in the lower right hand corner you will select "save", a box should pop up to save the file. Give it a name and save it. This will be your DIVX file, Audio & Video, except it will be fixed. If you notice what you last posted, the part that says "81599, delay: 3399 ms"? That is your problem. Now once you save the file, try loading your new file into AVImuxGUI and see if there is still an offset. There should not be. You can close AVImuxGUI and go on with burning your file to DVD.
Mark

[hiimbored]

You highlight the audio in the lower box. Down in the lower right hand corner you will select "save", a box should pop up to save the file. Give it a name and save it. This will be your DIVX file, Audio & Video, except it will be fixed. If you notice what you last posted, the part that says "81599, delay: 3399 ms"? That is your problem. Now once you save the file, try loading your new file into AVImuxGUI and see if there is still an offset. There should not be. You can close AVImuxGUI and go on with burning your file to DVD.
Mark

Ok, I did that and AVImuxGUI shows that it is in sync, but will that change anything about the MPEG I get after encoding? I didn't notice the original AVI being out of sync and the problem arose after encoding it. Also, I started to convert the new file and it said it would take over 7 hours! Why did it change that? When I encoded the original file it took only about 3 hours and 30 minutes...

[mwkurt]

Don't know anythng about your encode times, but your problem was that your DIVX file was out of sync, whether you realise it or not. I figure your DIVX file is pretty long, like a movie or something? A small offset in your audio can manifest itself to become quite large when converted to mpeg. Your file should convert fine now and be in sync after the conversion. All I can say is give it a try and see how it goes. Please let me know if this fixed your problem.
Mark

[hiimbored]

Don't know anythng about your encode times, but your problem was that your DIVX file was out of sync, whether you realise it or not. I figure your DIVX file is pretty long, like a movie or something? A small offset in your audio can manifest itself to become quite large when converted to mpeg. Your file should convert fine now and be in sync after the conversion. All I can say is give it a try and see how it goes. Please let me know if this fixed your problem.
Mark

Ok, thanks for all your help. I just encoded a different file using the instructions you gave me and it turned out perfect except for one thing. When it is finished encoding, it seems like the edges are slightly cut off on the left and right sides on the new MPEG file. I can't tell if it encoded it to a different aspect ratio or if it just cut off the sides for some reason. I used the "Full Screen (Keep Aspect Ratio)" option in TMPGenc, by the way. Can you tell me why this happened? Could it be because the AVI was taken from a PAL DVD and I am converting it to a NTSC DVD? Thanks!

[Forum Troll]

PAL resolution is 720x540, and NTSC resolution is 720x480, so there is some small adjustments there when you convert.

[hiimbored]

LOL, well now I have another problem. I encoded it and it looks to be in sync, but now towards the end, the audio keeps repeating itself, like its skipping. I thought maybe it was a fluke, so I encoded it again, and it still does it in the exact same spot. The fixed AVI file is completely in sync and has no skipping at all, but after I convert it to MPEG2, it skips for the last 8 1/2 minutes of the video. Anybody know how to prevent this? Thanks!

[mwkurt]

What are you using to play back this mpeg file? Maybe try VLC Media player. Maybe try a different encoder. I convert all of my DIVX files to DVD using SVCD2DVD. MAybe try that. There is a fully functional trial available.
Is it this one file that skips during the end or any file you have encoded to mpeg? Your bitrate isn't too high is it?
So many things it could be. I realize that it takes a lot of time to encode a file to mpeg but you may just have to try changing one thing at a time then encode again until you figure out what the culprit is. By the way, Did your encode time go down to a reasonable level?
Mark

[hiimbored]

What are you using to play back this mpeg file? Maybe try VLC Media player. Maybe try a different encoder. I convert all of my DIVX files to DVD using SVCD2DVD. MAybe try that. There is a fully functional trial available.
Is it this one file that skips during the end or any file you have encoded to mpeg? Your bitrate isn't too high is it?
So many things it could be. I realize that it takes a lot of time to encode a file to mpeg but you may just have to try changing one thing at a time then encode again until you figure out what the culprit is. By the way, Did your encode time go down to a reasonable level?
Mark

Yea, I was already using VLC. It ended up taking about 6 hours each time to encode. I always use TMPGenc for encoding and have no idea how to use any other program. I like TMPGenc because it just converts to MPEG2 and then I can use the DVD Author to make the menu and everything. Does SVCD2DVD just convert to MPEG2 or does it also make the menu? Thanks again!

[mwkurt]

SVCD2DVD makes the menu and everything, Albeit a simple menu, no motion or anything. Just drag your asset to the first VTS folder, make a simple menu and off you go. It makes doing everything alot easier than using seperate applications for converting then making the DVD. Give it a try!
Mark