Some audio tracks bumped out of sync

I recently discovered that some audio tracks have been bumped out of sync starting at one point in my timeline, and there doesn't seem to be any consistency to it–stereo tracks have shifted so that one track starts early while the other is in sync, others start together but have been bumped, while all of the video seems to be correctly placed, and some audio is still in sync. This has happened on various audio tracks and with varying degrees. Any clues on how could this have happened? Could it be from insert edits? I use them all the time and never had any problems like this before. Please help!

This can easily happen if you audio and video tracks are not linked. (Apple L toggles linking on and off) When they are linked it's difficult to inadvertently bump the picture or audio track out of sync.
As for the stereo tracks. The only way to bump them out of sync is if they were, at some point, not stereo tracks. (Option L toggles stereo) And even that should rectify itself when they get made into stereo tracks again.
I say "should" because I've had stereo tracks of unequal lengths show up a few times and have never been able to figure out how it happened. I do know that if you don't fix them they can play havoc with the audio if you export the sequence to QT.
rh

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Audio And Video out of sync in Final Cut, but not in quicktime

I heave searched the forums to no end to find the solution to this issue, unfortunatley, I have not solved the problem.
I am using Final Cut 4.5 on a G4 running OSX 10.3.4. This system has worked perfectly for years with no problems. Neither the system, hardware, or software has ever been changed on this machine. Suddenly last week, despite perfect sync while previewing the capture, the Audio and Video were of sync in Final Cut, but when checked in quicktime, there were no problems. That is how I eventually figured out this was a final cut problem.
By out of sync, I don't mean it is by a specific number of frames that can be adjusted and then everything is fine, the sync seems to drift so that if you edit the audio to be in sync in one part of the video, it won't be at the end. Also, it is out of sync from the first frame played, not a gradual drift.
This is definitely not an issue of frame rates or final cut settings as will be evident by the steps I took below to find the source of this problem.
This is what I did to attempt to fix the problem:
- Check drives using disc utility and repair permissions
- Remove Final Cut Preferences using Apple guidelines
- Switch hard drives
- Delete Final Cut and reinstall newer version of final cut (since the capture files played fine on Final Cut 5.1 on another machine)
- reinstall entire OSX 10.3.9, wiping the hard drive and reinstalling Final Cut 5.1
- switch ram slots, and even replace ram with different sticks from another G4 machine
None of these solutions worked. Is there some hardware problem with my G4 that is suddenly causing Final Cut to play audio and video out of sync?
Hope you can help, otherwise this otherwise great G4 is going in the dumpster!
Thanks

For what it's worth, I'm having what looks to be the same problem. Driving me insane. Here's what's going on-
Editing in FCP 6.0.2
QT was just updated to 7.3.1 the other day (hmm)
On an MacBookPro machine, OS 10.5.1
Software updater says everything's up to date of course.
DV-NTSC 24p (23.98) Advanced Pulldown Removal (footage was shot at 24PA on a DVX100b)
In Quicktime, the file previews fine, everything's in sync, everyone's happy. In FCP, the video and audio are wildly out of sync. I did a test inside of quicktime and sliced out a small portion of the media clip and did a "save as" and this small slice played in sync in FCP. However, this did not work for the entire clip. Clip is weighing in at 5.58GB for a 32 minute run.
I'm trying to multicam 2 tapes together and manually syncing these up is proving to be difficult at best. When anyone gets any ideas/leads/patches, let us know.
Grr,
Nicole
Editor, RHED Pixel

Audio and Video out of Sync in Encore 2.0

Here's my issue:
I opened a project in Encore 2.0 that was an Encore 1.5 project. I have one timeline with a 2 hour movie and the AC3 audio file that goes with it. Encore 1.5 played the audio and video in sync from the timeline and burned discs with the audio in sync. The video is an MPEG2 file encoded at a 3.1 constant bit rate.
In Encore 2.0, when I play the timeline, the audio becomes progressively out of sync as it plays. Within the first few minutes it's maybe a frame or 2 off. By the end of the film it is about 18 seconds off (audio is playing ahead of the video).
Is this a result of Encore 2.0 conforming the audio file? If so, how am I (or anyone) supposed to attain sync between video and audio in Encore 2.0?
I have Encore 1.5 and 2.0 both installed on the same machine. As a test, I opened the project in 1.5 and played it, everything was fine. I closed Encore 1.5 and opened the project in Encore 2.0, and the audio is out of sync.
Any comments, ideas or suggestions?
Mike

Joe,
I tried creating a project with the original WAV file and it's corresponding video and found that the audio and video were still out of sync. I did a little more testing and discovered that the audio is actually being played correctly, it's the video that is not being played correctly. Here's what I did:
I opened the WAV file version of the audio file in Premiere Pro and noted where a hammer hit in the video occurs (01;40;30;28). I then opened Encore 2.0 and imported the video and AC3 version of the WAV file, placed them in a timeline and the audio's hammer hit is right where it's supposed to be (01;40;30;28), but the video's hammer hit occurs at 01;40;43;18.
Next I went into Encore 1.5 and brought in the AC3 audio and video files and placed them on a timeline. I went to 01;40;30;28 in the timeline and the audio and video were both at the frame they should be at that timecode.
Seeing how the video appears to be playing incorrectly, here's some info on my video files:
I have 4 versions of the same film in varying encode rates with the same start and end timecodes. All four files were encoded on a Sonic DVD Creator authoring station using hardware to encode. The files are encoded at the following rates: 2.9 constant bit rate, 3.1 constant bit rate, 3.4 variable bit rate and 4.0 variable bit rate. They are each NTSC with drop frame timecode. All four files play correctly in Encore 1.5 but incorrectly in Encore 2.0.
This almost seems like a drop frame/non-drop frame issue. Do you have any ideas?
Mike

Why is my dialogue track drifting out of sync?

I have a 5 minute clip 1280x720 - I am using Apple Pro Res 422 and H264 - Clip plays beautifully in the timeline, but when I export the clip as a QuickTime Movie, self contained and NOT recompressing frames, the dialogue track drifts out of sync after 60 seconds. I am approx. half a second out by the end of the clip. HELP!!!

It's a little unclear. What format is the clip (Codec, and audio sampling), and what format is your sequence? If your clip or sequence are h264, that's probably the problem. h264 is not suitable for editing and sources should be converted to a fcp friendly format before editing. Also, all source audio should be 48k 16bit aiff with your sequence audio settings the same.

Audio is/goes out of sync

Hi guys,
Brand new user to Premiere Pro CS 5.5
I took some clips off my Galaxy Nexus that I shot the other day and wanted to cut them into a short video so I imported them into Premiere.
When I play them in Premiere the audio appears to be in sync at the very beginning of the video but as it progresses through it seems to be worse and worse out of sync as it goes along. Even in a short 1 minute clip.
When I play these raw video files in something like XBMC or the standard Windows 8 media player, or even just on my phone there don't see to be any problems with the audio/video being out of sync what so ever.
I tested this out with several random clips recorded on my phone and it seems ALL of them are doing this in Premiere no matter the duration of the video.
Why is this happening and how do I prevent/correct it?
Thank you

Cell phone video often uses a variable bit rate, such as from the iphone... these links are about iphone video, but they may help
http://forums.adobe.com/thread/881246
-and http://forums.adobe.com/thread/1011411?tstart=0
-and a fix http://forums.adobe.com/thread/934466
If those links don't help, more information might help
What are you editing, and does your project match your video?
Read Bill Hunt on a file type as WRAPPER http://forums.adobe.com/thread/440037
What is a CODEC... a Primer http://forums.adobe.com/thread/546811
What CODEC is INSIDE that file? http://forums.adobe.com/thread/440037
Report back with the codec details of your file, use the programs below... a screen shot works well to SHOW people what you are doing
http://forums.adobe.com/thread/592070?tstart=30
For PC http://mediainfo.sourceforge.net/en or http://www.headbands.com/gspot/
Also, to be sure your video matches your sequence, read on...
For CS5 and later, the easy way to insure that your video and your project match
See 2nd post for picture of NEW ITEM process http://forums.adobe.com/thread/872666
-and a FAQ on sequence setting http://forums.adobe.com/message/3804341

Capturing directly from camera causes audio to go out-of-sync

I'm capturing directly from Canon XHA1 camera into FCP7 on my Macbook Pro (onto an external hard drive) via Firewire. I'm also recording to tape in the camera at the same time.
This works fine -- until I stop & start the tape while recording. This causes the audio to go out-of-sync with the video on the Macbook captured file. (I just let the computer keep capturing, while stopping & starting the tape in the camera.)
Is there a setting in FCP7 to alleviate this problem?

YOur not alone.
I use a Sony Z5, and usually doesnt have a issue, but noticed recently that we are having some sync issues out of the blue.
We connect to a MacBookPro via firewire and capture live in FCP.
We have since changed cameras that records onto SD cards, and havent had a issue since. But just wanted to let you know, your not on your own!

When I watch tv shows in Front Row that I've bought off iTunes the audio gradually falls out of sync with the video. It does not happen with other files that I have converted into mp4s. Any ideas for fixing this? It's a huge bummer...

When I watch tv shows in Front Row that I've bought off iTunes the audio gradually falls out of sync with the video. It does not happen with other files that I have converted into mp4s. Any ideas for fixing this? It's a huge bummer...

I too have the same problem. The audio drop out of sync in about 5 sec in not uncommon for the audio to be 30+ sec behind video. Apple needs to fix this!!!!!!!!!!!!!!!! its a joke, my iphone is all messed up after the last update as well. at one time not to long ago apple products and software were top rated, not so much any more, more and more problems are showing up and apple is unwilling or unalbe to fix the many issues. Apple needs to fix the audio sync problem, it not the computer hardware or other software it ITUNES!!!!, there is no workaround other then hitting pause and hitting pause and hitting pause to temp fix the problem.

Audio and video out of sync

I have captured tapes from my DVD camera and am in the process of editing clips and have noticed that the video and the audio are slightly out of sync.
How can I correct this?

I don't think it was a "DVD" camera!
Often sync problems are caused by recording the audio at a different setting than the Easy Setup capture preset.
The normal DV-PAL or NTSC Easy Setup is for 16bit audio.
If you recorded at 12 bit you need the "DV-PAL (or NTSC) 32KHz" Easy Setup.

Audio and Video out of sync in shared iMovie file

Hey Guys -
Quick question, I've created a new trailer in iMovie, all works fine but the audio and video is out of sync in the shared file. How to fix it?
Thank you
MondCharlie

For what it's worth, I'm having what looks to be the same problem. Driving me insane. Here's what's going on-
Editing in FCP 6.0.2
QT was just updated to 7.3.1 the other day (hmm)
On an MacBookPro machine, OS 10.5.1
Software updater says everything's up to date of course.
DV-NTSC 24p (23.98) Advanced Pulldown Removal (footage was shot at 24PA on a DVX100b)
In Quicktime, the file previews fine, everything's in sync, everyone's happy. In FCP, the video and audio are wildly out of sync. I did a test inside of quicktime and sliced out a small portion of the media clip and did a "save as" and this small slice played in sync in FCP. However, this did not work for the entire clip. Clip is weighing in at 5.58GB for a 32 minute run.
I'm trying to multicam 2 tapes together and manually syncing these up is proving to be difficult at best. When anyone gets any ideas/leads/patches, let us know.
Grr,
Nicole
Editor, RHED Pixel

Audio and video out of sync on short recordings

I've scanned the discussions and see that alot of posters are experiencing
the same problem I'm having which is recording quicktime movies
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...
...I'm also having the same problem on really short recordings...less than a
minute. I've coming video and audio out of my cable box, into a SONY DSR-11 VCR, then firewire out of the deck into the computer, recording the movies with Quicktime 7.1.6.
I know it's coming out of the cable box and then out of the SONY deck via firewire in sync because when I log and capture through Final Cut Pro, audio and video are in sync in preview and playback. I don't want to use Final Cut Pro to capture the movies because I want to end up with MPEG4, and I'd have to go through an extra conversion process out of FCP.
Any thoughts on why even short recordings through Quicktime are out of sync?
Thanks.

I'm having similar problems transferring VHS video to Quicktime. Another problem I'm having is when I transfer a VHS video to iMovie and then export the video to H.264 format, I have similar sync problems, even though the iMovie seems perfectly in sync.
I'm going to try to transfer several alternative video formats (video from my cable DVR, Video from live TV, and video from a digital mini cassette to try and figure out whether the VHS format is the culprit. Will keep you posted.

Ipad audio and sound out of sync

For a few months my iPad's audio has been out of sync with videos as well as the sounds like the keyboard clicks. Sometimes it is more out of sync, sometimes less. I have tried turning the device off and on again, resetting preferences, and searching online with no solutions found. Anyone know how I can fix this?

I'm having similar problems transferring VHS video to Quicktime. Another problem I'm having is when I transfer a VHS video to iMovie and then export the video to H.264 format, I have similar sync problems, even though the iMovie seems perfectly in sync.
I'm going to try to transfer several alternative video formats (video from my cable DVR, Video from live TV, and video from a digital mini cassette to try and figure out whether the VHS format is the culprit. Will keep you posted.

Since downloading OS X Yosemite I have been having issues with Netflix. Video slows down which causes the audio to go out of sync. Netflix plays ok on ipad which makes me think it's the software which is the issue. Has anyone else had this issue?

Since downloading OS X Yosemite I have been having issues with Netflix. Video slows down which causes the audio to go out of sync. Netflix plays ok on ipad which makes me think it's the software which is the issue. Has anyone else had this issue?

Try this:
Go to System Preferences - Bluetooth. Delete the keyboard from the list of devices by pressing the "-" button. Take the batteries out of the keyboard and reinsert them. In Bluetooth Preferences press the '+" button to add the new device. If the keyboard begins to pair, click the word "pair" and type in the passcode. Press return. The keyboard is now paired.
If the mouse is not pairing, try this: shut down the computer completely, unplug any USB mice, then turn off the power to the bluetooth mouse. ONce the computer starts up again, wait for the pop-up looking for a mouse. Turn on the power to the bluetooth mouse. It should work normally now.

Flash player audio and vidio out of sync

flash player audio and vidio out of sync. audio lags 2 seconds behind vidio. this is a flash player or silverlighr problem. please help.

A lot of times it's in the video itself. A great example of it is "Tarantula", a 1955 "B" horror movie, on YouTube. About twenty minutes inti the film the audio suddenly drops about eight seconds behind the video. This happens when a video converter (software) requires more processor or RAM than the system converting it has available.
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If it happens with ALL videos you're watching, try right clicking, choosing "Settings", and under the far left tab, "Enable hardware acceleration"

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.
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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

Audio several seconds out of sync with live video stream.

I did a live stream last week using 282,482,832,1500Kbps streams. What would cause the audio to get out of sync with the live video stream? I'm trying to determine if it was bandwidth related, cpu/memory issue on the FMIS 4.5 server, or an issue with encoding PC exceeding it's limits?
Thanks,
Dave

Which device are you using? Are audio and video coming from the same device or different devices?
Is it a USB device? Try changing the device and see if there is any difference. Changing bitrates will not affect audio-video sync.

Some audio tracks bumped out of sync

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