Audio loses sync

I'm working in Captivate 4. Have audio in a .wav format that I lay into the project. I have captions, etc that are synced with the audio. When I publish the project to a .swf the audio tends to lose it's synchronization. This seems to happen randomly and is more frequent when the user scrolls through the slide using the Progress bar.
Any thought or ideas on how to fix this would be most welcome. Thank you.

Do you by any chance have a copy of the patch? It's no longer available for download. Thanks!
Kris

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Brand new AppleTV audio loses sync with video in any of the apps over time

I bought a brand new panasonic viera plasma and a brand new Apple TV. Video is set to 1080p and I have comcast cable internet. I have three apple TVs in the house. The other two are the 720P models. I've tried two new appletvs on new tv only and after an hour or so of viewing videos in any of the apps (hbogo,Netflix,Hulu) the audio loses sync resulting in me resetting the ATV and fixing the issue temporarily.
I didn't have this problem when I was using the 720p model ATV on the new tv.
Could it be the larger 1080P files?

does it happen with shared material in an itunes lib?
if not and only the internet streaming services then maybe it's a Internet network issue

AUDIO LOSES SYNC ON ALL HDV IMOVIE PROJECTS

1- I have a HDV project in imovie, a wedding video about 80 minutes long
2- I "share " it in iDVD [ it burns as a SD project ]
3- It plays fine until a certain point, then the audio loses sync about 60 min. into it.
ANY Help for this?

Tony,
You mighty want to read through the following:
iMovie: Improving audio and video synchronization at http://docs.info.apple.com/article.html?artnum=42974
Final Cut Pro 4: Irregular Audio Rates and A/V Sync in DV Clips at http://docs.info.apple.com/article.html?artnum=93326 discusses why a DV clip may have an audio rate that differs slightly from the expected rate.
Final Cut Pro 4: A/V Sync Issues When Capturing DV Clips Over Blank or Bad Tape at http://docs.info.apple.com/article.html?artnum=93327

Audio loses sync with video on HD footage (CS5.5). 'MPEG decode error'

HI All,
I'm trying to cut this vox pops video together but the audio seems to lose sync. i noticed that there was a red circle in the bottom right of the screen with a cross in the centre. After clicking on it, i was greeted with this message...
I have a fairly powerfull machine so I'm unsure as to what the problem is. Any suggestions as it's making this task virtually impossible!!!
machine specs...
Please, any help appreciated!!!

Had this occasionally myself.
For me it was drop-out on the tape (at the very start of some sections luckily), even though CS5.5 did not register any drops when capturing.
If you're not using tape then you've got a card error. Checkout the video at or about Frame 32106. Check out the source material. Although Windows 7 Media Player is likely to show no errors and with your audio in sync - very mis-leading - a false positive.
Fix for me was to simply re-sync audio/video manually but upstream of the error. If not, you will likely find you will also get export errors when trying to export via AME.

Audio loses sync after rendering

Imported clips from FCP capture scratch. Adjusted length of clips with motion. It plays fine when reviewing work but after rendering, about 7 seconds into the piece, the snyc is non existent. What have I done wrong?
Pb 17 inch 1.5 ghrz processor, 2 gigs ram, MBP 17,2.33ghrz 2 gigs of ram Mac OS X (10.4.9) 30 GB IPOD FC Suite, QT7, 3 LaCie extreme 200, 250 & 300,

yeah, I went back, trashed the original, captured everything in a sequence from FCP sent it to motion, added other effects and it worked fine. Some things you can do, some things you can't. Seems as though motion really did not like me importing the clips as quicktime, then modifying the duration in motion. Extra step still don't have a clue as to why I did it that way except the clock did read 4am! Hmmm....could be the answer.

Video loses sync on export

I recorded a video in AVC HD at 1080P 24 fps. The clip shows 23.98 fps in FCP. I took the microphone audio file and am merging it into my project, because the on-cam mic sucked.
Audio is in stereo at 48kHz. Now, initially, I lost audio sync in the timeline as the video played. By the end of the hour long video, I lost approx. 2 seconds. After converting the audio file multiple times with no solve, I used markers to sync the audio to the video at the beginning and end of the clips, and then used the retime editor to line them up, stretching the audio very slightly. This solved the sync issue in the timeline (however, I admit, it may have not been the "correct" way to solve).
The problem now comes when exporting the file. I've chosen settings to export Video and Audio in H.264, Roles as QT movie. I've also tried format "Apple Devices", H.264. The exporting fps is still at 23.98 and audio is at 48 kHz. The audio loses sync in both cases.
Any idea why the video plays perfectly with the audio in the timeline and loses sync in the exported video?
Thanks very much,
Jeremy

UPDATE: I resolved the issue by returning the timeline to out of sync (by undoing the audio stretch that I had performed) and instead stretching the video out. Because it is about a 1% difference over the hour long video, it rendered and looks great both and the timeline and in the export. The export settings, as I've found, really shouldn't affect the sync.
A note about the original audio stretch that didn't pan out - when I used the retime editor, FCP did not have anything to render. I'm wondering if such a slight (though necessary) adjustment caused FCP to ignore the correction?
Edit: Perhaps I lost the sync from 23.98 fps, should've been 24 fps, the .02 fps lost = 1.2 fpm = ~72 frames over the duration of the video / 24 fps that the audio was going at = 3 seconds of loss. Just a hunch.

Having lots of trouble creating a multicam clip with independently recorded audio in sync

I can't figure out why this isn't working and have tried it many different ways and many times. Here's the situation:
Video was shot on a Canon 5D Mark III and a Canon 7D (I suspect this may be part of the problem because the 5D has timecode capabilities and the 7D doesn't)
Primary audio was recorded on a Zoom H4N but each camera recorded audio also and the levels are all fine
I've tried the following to create the mutlicam clip of the interview with all audio and video in sync:
Naming the Camera Angle for each clip (Profile and Straight On)
Selecting all of the relevant video clips
Seleting all of the relevant audio and video clips
Synchronizing the video clips with the high quality audio clips (half of which I had to do by hand) and then selecting the sychronized clips to create the multicam clip
None of this works. In the end a multicam clip is created that is completely out of sync. I'm at a loss and would love any help!
Thank you.
Nick

I saw in a video tutorial (after trying to find solutions to this problem) that one should assign the independent audio to the same camera angle as one of the cameras. After assigning it to its own angle, it did much better but it loses sync about half way through now. Screenshot attached.
Nick

Audio Slipping (Sync issues) steaming video.

Hey all,
I was wondering if this had happened to anyone else.
Since updating to Yosemite i've noticed a real problem when streaming video online through my web browser.
Regularly whilst watching a video there is a crackle on the audio track, then a second of the audio is repeated almost like an echo.
When this happens however the video caries on meaning the audio and video are out of sync.
This occurs on everything from Netflix, Youtube, DA Clips and other video sharing sites.
It occurs on Google Chrome, Safari and Firefox.
The only way to fix the problem and re-sync the audio is to reload the page with the video and begin again.
Unsure whether this is related or not but i've also noticed some slipping of audio when playing music in spotify. But obviously because it has nothing to sync up to you just hear the same word twice and it carries on, kinda like a scratch on an LP.
Would really appreciate any words of wisdom.
I'm currently running OS X Yosemite 10.10.1
Macbook 13inch late 2009 model
2.26 processor
4GB Memory
Many thanks
josh

In case anyone comes across this in the future, I've resolved my issue, and it had nothing to do with audio bit rates. In short, there seems to be a well-documented yet unfixed but in which an export from iMovie can lose sync if there are either slow-motion effects applied to a clip, or if the slow-motion speed is custom rather than pre-set by the software.
I changed my clips to 100% and everything exported fine, with no sync issues. For more on this, see the helpful thread here: http://discussions.apple.com/thread.jspa?messageID=10618532#10618532

'Source play' and 'audio-video sync' problems with PE8 on fast WIN7 64 bit computer

I am transferring Hi8 videos, about 2 hours long, to my WIN7 64 bit computer with PE8. [Dell Mobile Precision M4400 Computer Workstation (Intel Core 2 Duo T9900 500GB/4GB); NVIDIA Quadro FX 770M, 512MB] I seem to have several problems:
First, after importing the file (.avi), I get a message about ‘dropped frames.’
Secondly, when I try to play the video in the source monitor, the audio plays but the video doesn’t; it only shows the first frame [this is after waiting until the video is ?recognized? ] I can use the shift-arrow key and see that the video is there.
Thirdly, I can play the .avi file in other players, e.g., avidemux or PE pro CS5 on another computer. There, I see that the audio and video are not in sync; the audio can be up to 300 ms ahead of the video (as determined using avidemux).
Questions:
1. Why doesn’t the source monitor play the video? Is this a problem with PE8 (latest update as of 3 March 2011) on aWIN7 64 bit computer (intel duo core. 3 GHz).
2. Is the audio-video sync problem the result of the ‘dropped frames?’ How can PE8 correct this? Avoid this? Or, is it coincidence?

"I think you're telling me you're using a backwards compatible Digital8 camcorder to capture your video as DV-AVIs. Is that right?" YES
"Are you using Premiere Elements to do this capturing?" YES, AS ABOVE PE8
"Go to the File menu and select Properties. It should show a standard DV codec being used for your video and audio."
WMP v12 is dumb. Under properties, media, it says 'video.' However, avidemux gave me the information state above: video -- Codec 4CC: dvsd, frame rate: 29.971 fps; audio -- codec: PCM, channels: Stereo, frequency: 48 kHz.
So, back to the Questions:
1. Why doesn’t the source monitor play the video? Is this a problem with PE8 (latest update as of 3 March 2011) on aWIN7 64 bit computer (intel duo core. 3 GHz).
2. Is the audio-video sync problem the result of the ‘dropped frames?’ How can PE8 correct this? Avoid this? Or, is it coincidence?

Audio/Video sync drift in Premiere CS5.5, but not in CS6

I have a QuickTime file with the following specs:
Video: H.264, 854x480, 29.99fps
Audio: AAC, 44100 Hz
When I open the file in QT player, or in Adobe Premiere CS6, there is no issue with Audio/Video sync.
However, when I import the file in Premiere CS 5.5, there is a drift in the Audio/Video sync.
Is there something I can do in Premiere CS 5.5 to avoid or fix the drift?
Thanks.

I had a similar problem and these are the steps I took to fix it.
First I deleted the files in "Adobe Premiere Pro Preview Files" for the project in question. I reopened Premiere and it appeared that deleting those files didn't seem to do anything as everything in the project looked the same.
I then disconnected the drive with the footage on it and opened Premiere. When it asked where the footage was, I told it to Offline All. I then went into Preferences > Media and hit Clean for the Media Cache Database. This had to be done because it only cleans the cache for files that are no longer connected with the project (as noted above). I closed and reopened the project, selected everything in the Project window, right clicked and chose Relink Media. I located one file and it relinked the rest automatically.
Now, finally, Premiere is re-conforming all the audio. Hooray!

Apple's DVD Player: audio in-sync. External DVD Player: audio out of sync

I exported my Sequence from FCP to QT, used compressor to make m2v and ac3 (Dolby) files, then used DVD SP to burn a DVD.
When I play the DVD on my Mac Pro using Apple's DVD Player, MPEG Streamclip or VLC, the audio is in sync with respect to the images, FCP's Canvas and FCP's QT export.
But when I play the DVD using any of three different external DVD players, the audio momentarily drifts out of sync by 30 to 40 frames, near the end of my 30-minute program, but is back in sync after about a minute, when the shot at hand ends and the next shot begins.
More specifically, it's as if the video lags by about 30 to 40 frames, but there is no stuttering or other obvious visual sign that this is happening.
Why would Apple's DVD Player, MPEG Streamclip or VLC play the audio in sync while these external DVD Players play it out of sync?
I should add that in order to verify that the TVs to which the external DVD players are attached are not the source of the problem, I monitored the audio using headphones connected directly to the audio outputs of the DVD Players as well as connected to the headphone jacks of the TVs, and there was no difference, i.e. in both cases, the audio drifts out of sync momentarily, as I describe above.
I can only think that DVD SP is muxing the m2v and ac3 file in such a way that software DVD players can demux it without difficulty, but hardware DVD players cannot.
Does anyone know how to fix this problem?
Thanks.

Please tell us what was wrong.

Audio/MIDI Sync Errors

After working perfectly for months, I now am getting audio MIDI Sync error messages. The result is no audio output either from audio instruments or recorded audio. I am using a MOTU 896HD and audio thru itunes works as long as Logic is not running at the same time. If I switch to built in audio it seems to play back fine.

Stever,
There's a few posts on this over at the Sonikmatter forums.
Two things were recommended.
Toggle the internal clock to ADAT then back to internal.
If that doesn't help, unplug the unit (electricity and firewire) then toggle the voltage selector switch, (putting it back to there it was of course).
After doing this, flip the clock to ADAT then back to internal.
The idea is to reset the unit.
Post back if this works...
pancenter-

Regular problem with video playback & audio video sync

So, I am regularly having two problems (I wonder whether they are connected) that I cannot solve and am hoping someone can tell me if I am out of luck or if I need to do something or add something.
For example, because it happened again today. These are details about the file stuff:
Type:AVI
Bit Rate:133kbps
Dimensions:624x352
Audio format: LameMP3
Frame rate: 23 frames/second
Data Rate: 1131 kbps
Video Sample Size: 12 bit
Video Compression: XVID
First Problem: If I play the file - I use Media Player Classic - it plays fine. Open it in Windows Media Player and it plays fine. Try to edit it in Premiere and the file loaded into Premiere is filled with what I believe are called audio video sync problems, so I have to constantly unlink audio and video and adjust it. It loads and does not need to conform.
I have the same problem on my laptop(Windows XP Home) and desktop (XP Pro), the desktop with twice the RAM. I have the K-lite Mega codec pack installed. I would call myself a beginner when it comes to video editing. I understand generally what codecs are but I am not capable to making any tweaks to the K-lite Mega codec pack (if I should have) so it is setup as installed.
Second Problem: The video in the playback box never plays back normally. I have tried adjusting the playback settings: have changed the aspect ratio between the software and harware option and adjusted between the three desktop display options. Occasionally it is "ok" but most of the time not and never just normal.
Any help is much appreciated.
Thank you.

I tried this already and then we had a blackout so going to try again and hope it goes through before a second one...lol
Hello:
Thank you Robert J. Johnston, the_wine_snob, Paul_LS and SteveGrisetti for your help so far.
So this is where I am at now:
Files all seem to be of the same type, so I will just say "the file" for the one I am working with right now.
Loaded file into VirtualDub. I like that program. Well done, whoever made it. Did some basic cutting of unwanted stuff. Saved as AVI. Saved both a Direct Stream Copy and a Full Processing Copy.
Opened the FP copy in Premiere Elements and it plays without audio sync problems that I can see. Have edited it some so far and still no problems.
Before I do any more editing work, I decided to save it (SHARE) in different formats to see what happens.
Goal: Looking for no audio sync problems. Best quality I can get with a 1GB file size limit.
Saved as DV-AVI: plays fine. no audio sync probelms. love the video quality. 2.95GB, so too big
Saved as Flash: Do not see any audio sync problems. Do NOT like the quality (flips back and forth between clear and all pixely (is that a word). 32 MG
Saved as Mpeg: Media Player won't play it (thought Media Player with KL Mega Codec played everything?) (It loads it but doesn't play?); Quicktime won't play it. Windows Media Player just did. Do not see any audio sync problems. Like the video quality. 631 MB.
Saved as Windows Media: Do not "think" there are any audio sync problems; if there are, they are very subtle. Not crazy about video quality. Better than flash video option though still flickers between two types of qaulity (if that makes sense) . 52MB
Any suggestions as to what I should do at this point to meet my stated goal. I assume [share]ing is what I should do? Is there any exporting or any other options I do not know about. Without your help I figure I will Share to MPEG? Not sure why Media Player won't play it and Windows Media Player will?
Any thoughts on the best choice for me? Thanks for your help.

HEP!!!!! The video and the audio not sync after export from Premiere Pro CC 2014

when i play in premiere it ok but when i export it become not sync whith the audio

i was do a test with some player ,when i play from all this player it result is not the same:
KMPlayer :Audio not sync with video
itune :audio not sync with video and very lag
QuickTime :Can't play anymore
Windows Media Player : Very good no lag and the audio perfectly sync with video
put in Audition CC2014 (Multitrack) :Audio sync with video but very lag
put in Premiere Pro CC2014 (create new project and put the video in) :very lag but audio was sync
Nero Kwik Media :Very good no lag and the audio perfectly sync with video

Premiere Pro CC crashing randomly and leaving empty audio of synced clips

I've been having problems working with premiere in OSX 10.9
The program shuts down randomly some times when editing, some times when playing back, it's very unstable.
And two times the audio tracks synced using the merged clips are empty and there's no way to put it in sync again.
I`ve been searching in the internet for a way to fix this but I can`t find any info.
Process:         Adobe Premiere Pro CC [7754]
Path:            /Applications/Adobe Premiere Pro CC/Adobe Premiere Pro CC.app/Contents/MacOS/Adobe Premiere Pro CC
Identifier:      com.adobe.AdobePremierePro
Version:         7.2.1 (7.2.1)
Code Type:       X86-64 (Native)
Parent Process: launchd [221]
Responsible:     Adobe Premiere Pro CC [7754]
User ID:         501
Date/Time:       2014-02-19 19:59:39.484 -0600
OS Version:      Mac OS X 10.9.1 (13B42)
Report Version: 11
Anonymous UUID: DC21D278-26B8-B15A-7135-B304B44CCE22
Crashed Thread: 45 Dispatch queue: com.apple.root.low-priority
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: EXC_I386_GPFLT
[Please don't post crash logs to the user forums.]
Message was edited by: Jim Simon

Just incrase the windows Swap File.
Serioulsy, is it a joke ?
54go of the swap (set to 100go for test) + 9go of the ram.
Never had this before.

Audio loses sync

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