Forum Archive Home -> Video Conversion -> Conversion out of sync
| Conversion out of sync | ||
| whiteshoes posted 2006 Sep 15 08:23 | ||
| i have an avi file which has no audio problems but when i convert it to dvd using vso divx to dvd after about 20 mins it goes out of sync by quite alot can anybody help please tia :) | ||
| guns1inger posted 2006 Sep 15 08:51 | ||
| open the avi in g-spot 2.60beta and check the audio. There is a good chance that the audio has been encoded with VBR MP3, which seems to cause sync issues with a lot of encoders. The latest version of ConvertXtoDVD (DivxtoDVD's big brother) has a lot less problems with it, but even it isn't immune.
If this is the case, open the avi in virtualdubmod (click OK to the VBR warning you will get), then go Streams->Stream List. Right click on the audio and select Full Processing. Right-click again and select Compression. Choose Uncompressed PCM. Click OK, then click Save WAV and create new file. The file size should be around 100mb per 10 minutes of footage (i.e. 90 minute file should produce a 900mb file, give or take a few MB). Once this completes, click on Add, and select your wav file. Click on the MP3 audio track, then click on the disable button. Click OK, then go File->Save as. Make sure it is set to Direct Stream Copy, and save a new avi file with just your new audio track. Finally, open this new avi file, and test it for audio sync. If everything is good, use this in DivxtoDVD and see how it goes. Of course, if it isn't VBR MP3 audio, you have something else to worry about, so do a scan for bad frames in virtualdubmod at this point. | ||
| whiteshoes posted 2006 Sep 15 14:50 | ||
| thanks very much for your time and effort...ur method has worked . the whole film is now in sync. once again thank you :D :D | ||
| Rhoads posted 2007 May 17 20:47 | ||
| what the hell?? this isn't what i posted.. i guess someone redirected me to this cuz they think i had this problem instead. well instead of doing the ridiculously long drawn out process gunslinger suggests. i just got winavi and it put it on dvd in like an hour with about 10 mouse clicks. thanks for the help slinger but i just really hate it when i have do download a bunch of stuff just to do something simple. i highly recommend winavi for it's easy use. and for burning, i recomend having nero but using dvd shrink. | ||
| CubDukat posted 2007 Aug 23 00:40 | ||
| I'm actually having the same problem, except mine is in reverse. I've ripped several DVDs over the past few months, and at least half of them are fine when played back from the HD as DVDs in PowerDVD and WinDVD. The problem comes when I try to convert them in either Divx Converter or AutoGK. They go severely out of sync. For instance, a recent rip of a Babylon 5 DVD had four episodes in one file, but the audio for the last episode would actually be heard during the first 20 minutes of the first episode.
I've been using both RipIt4Me and DVDFab HD Decrypter, but I thought I had heard somewhere that you were supposed to use those tools only when something like DVD Decrypter didn't work. If that's the case, is there a definitive list of which studios use which formats? I found a partial list of the studios that use ArCCos on Wikipedia, but there's no list that I know of of who uses Ripguard. Also, the titles I seem to be having issues with are Warner Bros., Showtime and MGM titles. | ||
| guns1inger posted 2007 Aug 23 02:10 | ||
| If the DVDs play back fine on your HDD, then open them in Shrink and use Re-Author to separate out the episodes and convert each in isolation. | ||
| CubDukat posted 2007 Aug 23 08:40 | ||
I'll try that tonight with a few episodes of "Brooklyn South." That was one of the first titles where I had that problem. | ||
| jman98 posted 2007 Aug 23 09:01 | ||
| CubDukat - Ripping is not your problem, per se. Ripping multi-episode DVDs and converting them is often problematic. The best thing to do would be to rip 1 episode at a time. You could use DVDFab HD Decrypter all the time if you wish because it will always work.
When converting, be sure NOT to use VBR MP3 audio. CBR MP3 audio is OK. VBR audio doesn't really save much disk space and all it does is cause sync problems for a lot of people. I wish VBR MP3 was never invented because it's caused too many problems for the miniscule space savings it gives. | ||
| kavesa posted 2007 Oct 16 14:06 | ||
| Hi there, I have the same problem as the first post, but my gspot says I have a CBR mp3. In fact, it used to be VBR, but I recoded it before getting here, but the result was the same.
What I thought could have something to do with it, was the video codec, since it's the old DIV3 (DivX 3 Low-Motion), but I recoded it to xvid and it was still out of sync on the DVD. Any idea? Thanks | ||
| guns1inger posted 2007 Oct 16 18:15 | ||
| In what way is it out of sync ?
1. Out of sync the whole way through by a constant amount ? 2. Starts in sync and drifts further out of sync over time ? 3. Drifts in and out of sync throughout ? There are different reasons and solutions to each case. Without knowing your case, I can't tell you which approach to use. The solution posted above is to try to convert the audio without introducing sync problems, but it does not fix sync problems per se. 1. Out of sync by a constant amount. This is the easiest to fix. Open the avi in Media Player Classic. Use the + and - keys on the number pad to change the audio delay until you have the audio back in sync. Note the final delay. Open your avi in virtualdubmod and select Streams -> Stream List. Right-click and select Interleaving. Enter your delay into the field in the bottom half of the dialogue. OK your way back to the main screen. Make sure both video and audio are in Direct Stream Copy mode, and save a new avi. Test it and make sure the audio is now in sync. 2. Starts in sync and drifts further out of sync over time Usually this occurs when frame rates are changed (poor PAL to NTSC/NTSC - PAL conversions can do this). Essentially you have changed the running time of the video, and not the audio. To fix this you have to alter the running time of the audio to match the new video running time, or re-encode the video using it's original framerate. Software that will alter audio running time includes BeSweet, Audacity (note : Audacity can alter the running time, but this will introduce a pitch shift as well. You have to then adjust pitch in a separate pass), Sound Forge and Audition. 3. Drifts in and out of sync throughout This one I have only seen from particularly troublesome VBR MP3 source. There is no simple solution. All I can suggest is try to convert it using a different piece of software - AVI Demux, DAudioK - or spend a day or so cutting the audio and rematching it in small segments. This is very time consuming and needs to be done in an NEL with a good timeline function. | ||
| kavesa posted 2007 Oct 17 06:56 | ||
| Hi, thanks for your reply, and clear instructions.
Let me tell you that it is a 90 minutes video, and as it has only music on the first minutes, only on minute 3 I get to measure the out of sync. At that time, it is less than a second, but to the end of the video it is almost 5 seconds. On GSpot it says that it has 30.110 Pics/s and the same 30.110 Frames/s. I know NTSC uses 30 fps so I'm just off, but enough to make it wrong. So next question is, could I use VirtualDubMod for instance, to change that 30.110 to 30 and then use the result to author the dvd? Thanks again, K! | ||
| happynow posted 2008 May 28 18:27 | ||
| I Use SPAM, it works pretty good . | ||
| sumeshkri posted 2008 Oct 01 16:35 | ||
| i have got a RMVB file. i converted to dvd(VOB) using convertxtodvd. but the product is not synchronized. the audio is delayed from the very beginning to the end. audio is played after the visuals dissappear.media info says the audio is 2 channel AC3.and the video half d-1 pal.when i demultiplex it the video length is 01-04-01 whereas the audio length is 01-04-05. what to do? i could not play the RMVB file in jet audio, so i could not check it before conversion took place. what to do? | ||
| guns1inger posted 2008 Oct 02 05:40 | ||
| Demux the audio and video, work out what the delay is, and either use AC3DelayCut to adjust the AC3 track before re-authoring, or use something like DVD Lab Pro which has tools for delay adjustment built in. |
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