Supplemental digital audio recorder drifts out of sync

Dear All,
I have just purchased a Sony ICD-UX70/UX80 digital audio recorder to use as a back-up emergency audio source and it works very well in capturing stereo digital audio. However, when trying to edit this audio source into my video, the audio keeps "drifting," I assume because of the difference in the frames per second between video and audio. Is there any "quick fix" to keep both audio sources in sync...a "make fit" that will adjust the audio to the space allotted to the video? Any suggestions?
Thanks
Barb

Video runs at 48khz. The unit may record at 44.1khz. If that's the case, you need to resample the audio to match the sequence settings.
Resampling can be done in QT Pro, iTunes, Soundtrack Pro, Peak or any number of audio editing programs.
Good luck,
x

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Audio slowly drifts out of sync with video

I have a long continuous video clip (.MP4) that has an audio sample rate of 48 kHz. Separately, I have an audio clip (.mp3) for that take that was recorded at 44.1 kHz.
I created a sequence in Premiere with the .MP4 making sure the sequence's audio sample rate was set to 48. I brought the .mp3 into Audition where I used Edit > Convert Sample Type to change it to 48 kHz.
Back in Premiere, I dragged the converted .mp3 into the sequence and the audio still drifted out of sync toward the end of the clip.
Am I missing a step? How can I make sure the audio and video are in sync throughout rather than just in the beginning?

Two independent record devices will not stay perfectly synchronous over a long period of time unless locked via timecode or a sync cable.
A solution is to scroll to the end of the clips and adjust the speed of the mp3 file (making it run slightly faster or slower) until the end of the camera audio and mp3 audio coincide.
MtD

ITunes audio/video drifts out-of-sync

I have for a while been having problems with watching videos I have downloaded from the iTunes Store on my PC. I'm running windows 7, all my drivers are up to date, and the videos play fine if I open them up in Quicktime. If I watch them in iTunes, however, the audio and video get out of sync rather rapidly... If I watch a show in iTunes, I need to pause and restart it every 30 seconds or so, otherwise it just becomes too annoying to watch. Clicking pause then play again syncs it back up, but again it doesn't last long. I open the files in Quicktime and they play just fine, and considering iTunes just uses Quicktime for video playback, the problem must be with iTunes. I have gone through several iTunes updates, hoping with each one that the problem gets fixed, but it never does... can anyone help me??

Also been experiencing this for some time now, win7 x64 and same sort of pc specs to all you guys, fixed it just this evening so hopefully it's not just a fluke!
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I'm not a big expert on this so I can't say why itunes suddenly has a problem with these settings or why it makes a difference, I just hope that this fix works for you as well because I have been looking for a solution online forever and it's driven me insane!
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Video drifts out of sync as video progresses

Basically I'm trying to record guitar covers for my youtube channel, so i record the video through my iPhone, the guitar through garageband and then combine the 2 in iMovie (Version 10.0.7) with the song from iTunes as a backing track. However, I've noticed that as the video goes on, the video and the audio slowly drift out of sync so by the end they're completely out. It's definitely the video as the garageband and the song match up throughout the video but the video goes out. Help to solve this?

This tutorial video may help:
http://www.youtube.com/watch?v=GPCXPxTyZbM
Also, this User Tip offers a possible solution:
https://discussions.apple.com/docs/DOC-1726

Audio drifts out of sync since Quicktime 7.6 update!

Help!
Seems like ever since i updated the Quicktime to 7.6 my uncompressed 8 or 10 bit sequences for playout to digital betacam drifts out of sync over time!
But when i just go to the end of the sequence and hit play, everything seems fine.
I just restarted to my old Tiger system and there the problem doesn't seem to be there.
Any ideas??
I use the blackmagic Multibridge Extreme.
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Thank you for your time,
Steve Pittoors

I have had my audio drift out of sync also, not with Betacam, but DV. I basically send the audio from FCP to STP and tweek the audio, and then on export back to FCP it adds about 10 frames worth of audio. It starts in sync and then drifts by the end of the sequence. I have had no problems with shorter sequences - ie. 30 sec. The one I am working on now is just over 6 minutes. What is weird is that the sequence length in both FCP and STP are the exact same, but when I export back it drifts and adds in the extra frames.
I tried fiddling with all the framerate settings in STP and it still does it.
I posted last night in FCP and STP forums and haven't had any luck.

Why is the video and the audio in iTunes drifting out of sync?

This has been happening for awhile, and it is annoying me quite a bit. I can run the video find directly through QuickTime. I have been serching for an asnwer for awhile now. I have the most recent version of iTunes 10.5. Help would be appreciated. System specs below.
CPU: Intel i7 2600
Graphics Card: ATI 6990
Motherboard: Intel DZ68DB
RAM: 8GB DDR3 Ripjaw
OS: Windows 7 Professional 64x
The video usually begins normal, but within seconds the audio and the video drifts out of sync. Pausing and playing the video helped for a few seconds, but it quickly drifs out again. Help would be much appreciated. Thanks!

Im having this problem too, upgraded my laptop to windows 8 and the audio and video sync makes movies and tv shows unwatchable. I have tried re-installing itunes but this made no difference

When exporting separate audio and video streams, the audio drifts out of sync

So this is my first slightly larger project in Final Cut Pro X.
When I export my finished project (around 12 minutes long) straight to quicktime, it plays back perfectly.
When I export using compressor, the resulting audio and video streams are two different lengths. The audio comes out a full second longer. If you try to lay them down in a program like Adobe Encore, the audio starts out perfectly in sync. Two minutes in you notice the video is slightly out of sync with the audio. By the end of the video it's comically bad, over a second out of sync.
What's even more vexing is if I try to take the quicktime file that IS in sync upon playback, and try to convert it burn that to a dvd or blu-ray using toast, the problem re-emerges.
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Project settings can be accessed and changed by selecting the project and pressing command-J. Then, in the inspector, click on the little gear in the lower-right hand corner to access the settings.
Why are you trying to output video/audio separately? If the content plays in-sync when exporting a quicktime movie (using current project settings), you could try separating the video/audio using MPEG Streamclip as a second step instead of using compressor. For audio, don't change the sample rate from the project settings, and use uncompressed audio (AIFF) as the output format.

Audio drifts out of sync PE 3.0

After I burn an .avi onto a DVD, the audio is fine at the beginning but starts to slowly delay as the movie progresses. It drifts out of sync as the movie goes. What do I need to do to keep the audio in sync with the video?

This is aimed a Premiere Pro, but may help - First, work through the steps here http://ppro.wikia.com/wiki/Troubleshooting
If your problem isn't fixed, report back with the DETAILS asked for in the questions at the end of that link

Audio drifts out of sync.

Help!
Seems like ever since i updated the Quicktime to 7.6 my uncompressed 8 or 10 bit sequences for playout to digital betacam drifts out of sync over time!
But when in FCP i just go to the end of the sequence and hit play, everything seems fine.
I just restarted to my old Tiger system and there the problem doesn't seem to be there.
Any ideas?
I use the blackmagic Multibridge Extreme.
Another strange thing is that when i playout to HD, there is also no problem!
Thank you for your time,
Steve Pittoors

Might try reloading drivers for the capture card... sure sounds like it may well be the problem if non converted footage is in sync...
If this fails, try exporting the HD sequence to compressor and compress it to SD there, then lay out the resulting file from FCP not having the capture card do any conversion.
Jerry

Audio drifts out of sync in QT

I have just completed a 30 min., 20 sequence piece. When I create the reference movie the audio drifts out of sync.
It plays fine in FCP (5.1.1). The properies are matched at 1080i50 and 48k in FCP and QT.
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Thanks for taking an interest, Studio X.
I didn't do the capture, but the media and sequence settings are matched and the QT properties are too at 1080i50 and 48k. I'm not using an external monitor, just viewing from the timeline. I'm done with the project, I was just trying to save myself a copy before it goes to the compositor and composer.
I think I remember reading a post on the same problem somewhere else and it came right when it was encoded for MPEG 2. I'm trying that now, will post the result.

Audio Drifts Out of Sync After Demux

Hi,
I demuxed an hour-long program from DVD to .m2v and .ac3 using MPEG Streamclip. The audio drifts out of sync very gradually, and by the end is way off.
I don't want to re-compress the audio, as it is already AC3. According to Quicktime, the video is 29.97 fps, and the audio is 16-bit 48 khz.
When I used to Export to DV option, everything stayed in sync. I can't go this route, however, since I can't afford to re-compress anything (I'm making a new DVD from this old one). Just an FYI that this worked.
Ever run into this problem before?

I am using version 1.9. In the preferences pane, I don't have anything checked.
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Live multitrack recordings drift out-of-sync with video

This is the second time in two years that I've encountered this intermittent problem, and I can't figure out what causes it or how to solve it. I made a video recording of a musical group and simultaneously made an 8 channel multitrack recording of the same performance using Audition and a MOTU 8pre. When I try to combine the mixdown from Audition with the video file in Premiere, the audio from the two sources starts to drift out of sync after about two minutes. This doesn't seem like it should be possible, as both are digital sources. Has anyone else ever encountered this? What is the cause? Is there a solution?
What makes this more mysterious is that I've also used the same technique on previous occasions without experiencing this problem.

"You say that there is a fix for the division problem. If you don't mind, could you tell me what that might be? "
The reason 48k was chosen as THE sample rate for broadcast video is that there is a straight easy (integer) relationship between frame & sample rates for all used frame rates bar 29.9700299700.......... [yup it's an infinite unresolvable number] where though not simple it was still a lot easier to resolve if not perfectly but to a tolerable/usable level the arithmetic problems. Good news is this happens automatically in the editing software so long as enter the true known info IE 48k for audio 29.97 drop frame for Video. Conversely it won't {probably} if you choose 44.1.
Getting 29.97 in sync is complex however and may involve using .1% "pull-up's & down's Basically the Color frame rate in the States is .1% less than the B&W rate of 30fps. If video is actually at 29.97 but counted as though 30fps there will be a little over 2 sec error per hr.
tell me what was the diffeence in length you got per hr min or whatever?
One solution of many is to use an actual sample rate of .1% greater than 48k IE 48048k & it gets even more complex if using timecode
Word clock
It's a 5volt square wave, carried on a BNC cable, used solely for audio syncing. No video equipment understands word clock.
Pro video equipment can use video sync aka Black & Burst - a feed of which also using a BNC cable can link / tie the clocks of a number of cameras and also some audio equipment so they are absolutely in sync (unfortunately for you not the Motu 8pre which as far as I can see has no external sync possibilities)
Your "workround"
yes of course regardless of what is causing the problem, a time stretch / compression of the appropriate amount can make the pic & sound the same length and so joy.

Audio and video out of sync on short recordings

I've scanned the discussions and see that alot of posters are experiencing
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and getting audio and video out of sync.
In most of those posts the responses seem to be that the problem gets
bad if you're making a long recording. I'm experiencing that, but...
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Thanks.

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Sorry, I accidentally submitted the question before I had finished entering it ... here is more info ...
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Supplemental digital audio recorder drifts out of sync

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