Audio sync lost when capturing

I have recently encountered a problem while log and capturing the past two tapes. This is something that is new to me because in my previous 3+ years of using FCP I have never came across this. I am using the Sony DSR-11 and FCP 4.5 with 4 GB of Ram on a G5. I have corrected the problem within FCP by moving the video +7 frames to match up the audio, but was wondering what I can do to fix the problem while I capture. If anyone has encountered such a thing or knows the fix please let me know. I'm not sure if it's the deck, computer, or hard drives.
Thanks

One way to test is to do a capture using the camera as the tape drive.
If it syncs ok using the camera and using the DSR-11 it does not, there is something in the way the canon wrote the data that the sony is having difficulty reading.
What was the format of the recording - straight NTSC (or PAL) DV?
How are you monitoring the disfunctional sync? Are audio and video going out firewire to their respective devices or do you have video going out firewire and monitoring audio off of the computer audio out?
report back

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Audio sync lost when recording

I have another problem after the latest update (besides the applescript).
When recording a movie the sync between audio and picture is lost.
I use a canopus ADVC 110.
Using iMovie still maintains the video audio lock.
This update is just horrible, how could apple release this crap?
Henning

Hi,
Thanks for your response.
>1. Does the sync problem aggravates over time or does it remain constant from 3rd min to 30th min?
It aggrevated over time. You can't really notice it until around 3 minutes into the video. I watched it again and it looks like it the sync fluctuates slightly. Goes out of sync, gets back in sync (or nearly) and then goes out again. Listening on headphones I hear tiny, split second drops outs or glitches (related?).
>2. Did you observe the sync problem in the live stream also?
This time didn't even do a live stream. Had similar issue two weeks ago that was live stream and file save. Assumed the issue was due to network issues.
>3. Can you reduce the file split time to let's say 5 min and reproduce the problem again?
Will be trying this today or tomorrow.
>4. Which audio device are you using? Is the audio and video device coming from the same device?
It is from the same device (I think.) I am remotely troubleshooting for someone so I'm not 100%. It's a Polycom CX5000. The first one we have. We previously had a Microsoft Roundtable which is the same device. The device names come up differently though so that's why I'm not positive. The Video device is currently listed as Integrated Webcam (which must be correct as I'm getting the right picture). The audio though lists "Microphone Array (IDT High Def..." something.. That might be the laptop's built in microphone? If so, that might be the issue.
>5. If you have a different audio-video devices, please try with them and come back with the result.
Will let you know.
I'm hoping it is #4 as that would be an easy fix. I would find it hard to believe Adobe released a product that couldn't keep audio and video in sync, right?
Mark

Audio sync prob after capturing for 10 minutes or so

I have an audio sync problem when I import into Final Cut Express. Everything is fine but lets say around 15 minutes or so there is a slight sync problem.
What I have been doing is I import into IMovie because I have it setup to cut the clips after 10 minutes. This is great because I can let it run..and it automatically splits the clips up without any dropped frames at all. The problem is I then have to drag those clips..one by one into my external harddrive. That takes time and then I have to render the audio in Final Cut Express.
I do like though that the clips are a little over 2gigs..which is good for transfering between drives and backing it up onto a DVD.
Is there a way you can do what I do in iMovie...it automatically starts a new clip after ten minutes or whatever...this way I don't have to transfer and render.

FCE does not break up clips on capture. You can capture in 10 minute chunks if you want.
The audio sync problem can be caused by a number of things most common of which is using the wrong settings for your capture, where your settings audio sample rate doesn't match your media.

IPad 3 audio sync issue when video imported into CS5.5

Hi everyone, long time lurker here, love the support you guys are giving!
I'm hoping you'll be able to help with an audio sync problem I'm experiencing with videos recorded with the latest iPad 3 (well, that's what I'm calling it anyway).
I believe the iPad 3 recording format is 1080/30p with 44.1Khz / 16 bit audio, but when I match those settings on a Premiere Pro CS5.5 project (or try 48KHz audio as a test), the audio gradually goes out of sync. If the video is several minutes long, it becomes quite obvious, and by 10 minutes, it's terrible!
I should add the file plays back fine on the iPad itself and was imported to a Mac via iTunes. It also plays fine on the Mac itself in Quicktime.
Does anyone have any suggestions on project settings that'd work?
On a related note, I additionally captured the audio using a Zoom H2n which i intended to replace in Premiere, but foolishly I captured it at 48KHz, rather than the 44.1KHz of the iPad video file. Should I resample it?
I actually managed to line-up the 48 and 44.1KHz waveforms from the iPad and Zoom in Premiere quite accurately, but again both gradually go out of sync with the video...
I'm running Premiere Pro 5.5.2 on Mac OSX 10.7.3.
Any suggestions greatly appreciated!
Gordon Laing

To update my original post, I have found this problem happens about half the time.
Sometimes there's no issue and the audio is in sync when imported into Premiere, but at other times it's way off.
I did however find a workaround which has resolved the problem on my iPad3 videos which were out of sync and that was to first import the video clip into iMovie on the Mac first, then simply export it again using the 1080p option. The subsequent file is much larger (so there's been an annoying re-encode), but when imported into Premiere, the audio is at least now in sync.
I used this to fix the audio on a couple of the videos you can find on this page (all of which apart from the last one were filmed on the iPad3)
http://www.cameralabs.com/features/Working_holiday/
Since the video wasn't exactly critical to start with, I'm not too bothered by the re-encode.
Let me know if this fix works for anyone, and also if anyone comes up with a different solution.
Thanks,
Gordon

Audio Sync Problem When Playing on iPod

I just got my video iPod and have been encoding some .avi's using Xilisoft. When I play the output as a .mp4 it's fine on my laptop, but when I play them on my iPod there's a distinct audio sync lapse that gets worse as the players goes. Many videos also freeze at 1:51 (even though the time indicator shows the whole file time).
Anyone else having this problem and found any solutions?
Thanks.

having problem......................no solusion

Audio Sync Issue When Exporting to Quicktime

Currently using Premiere Pro CS3 3.2 and Quicktime 7.5.5
When I export to a quicktime .mov, my audio is a few frames out of sync. I've tried downgrading to older versions of quicktime with no success. Everything is completely in sync inside Premiere. If I import my rendered out-of-sync .mov back into Premiere, it magically syncs up fine again. It's the weirdest thing.
Help!

Scott:
There is a workaround.
I never really found a solid cause/solution, but if you're noticing that you have a couple of white frames at the end of your Quicktime exports, then you're probably suffering the same problem I have. Tech people I have checked with have suggested that the problem may be related to the use of .mp3 sound files (as opposed to .wav) in the Premiere project, but after removing them and replacing them with .wav's the problem persisted.
I am not technical enough to figure out exactly what's causing the problem, but I think it must have something to do with the Adobe Media Encoder (at least how it works on my computer). From what I've read on the subject, the Media Encoder is Premiere's Achilles's Heel.
Changing versions of Quicktime did nothing. Others trying to solve this problem have tried exporting their files with every conceivable variation of options and settings in the Adobe Media Encoder with no positive result.
I'm not the only one with this issue, but searches of the Internet show it to be relatively rare, so it's probably some weird glitch somewhere deep in my system. It's not widely-reported enough for anyone to care about addressing this bug. Of the few people that I've found suffering from this anomaly, none have found a fix.
But the good news is that I have found a workaround that accomplishes getting a quicktime file out properly that does work for me. I avoid the Adobe Media Encoder completely.
Step 1: Go to File > Export > Movie, and under Settings > General choose QuickTime, under Video > Compressor choose H.264, then Uncompressed Audio. I have not experimented with other settings, but believe that most of them will do just fine.
If you examine the quicktime file you've just exported, you'll see it works just swell; i.e. no white frames at the end of the movie and the sound syncs up perfectly. Okay, sounds great---but there's no way to limit the data rate using this method, which means we're stuck with a ridiculously large file.
The solution is to load the Quicktime file that you've just exported into Quicktime Pro, and now export it using data rate compression / sound compression options to suit your tastes. Bingo!
The other workaround that I have heard from some is to export your movie (again, avoiding the Adobe Media Encoder, instead using File > Export > Movie) as an Uncompressed AVI, and then compress with QT pro as before. This method didn't work for me, something about not having the proper codec on my system to read the AVI file that was exported, which makes absolutely zero sense but I couldn't find the right codec anywhere, even after identifying it with some super-duper codec identification utility. Go figure!
So, you'll have to get QT Pro ($30 I think) to use this workaround, but it does work, and that's what counts. I have no idea if there's a QT Pro clone or similar program available out there. Compression/decompression and all that jazz is way beyond me and I'm just happy to be able to get my file finally out there in working condition.
The only other bit of information I might share with you is that I tried searching the Internet at great length to try and solve this issue, but on the rare occasion I did find someone suffering this problem they were as confounded and frustrated as I was, and no one had a real solution. I continued to search with different search terms and tripped over the clues to this solution when searching for "white frame problem" in relation to Premiere. I even believe that if you search the Abobe forums you may find some posts about it, so if you're inclined to learn more about it, I suggest concentrating your searches with terms that refer to the white frame problem/issue, instead of the terms I used for so long, such as "Premiere Audio Sync Quicktime" and the endless permutations thereof.
But I'll bet this workaround works for you. Let me know, and if you'd like me to try it on one of your exports on my computer I'd be happy to give it a go.
I have often wondered if upgrading to CS4 would solve this problem. Are you using CS3 like me? If I could be sure CS4 made this issue vanish I would jump on it, but there just isn't enough information out there to know for sure. I'm inclined to think not.
Please do let me know if this solution works for you, or if you dig up any new information.
Thanks!

Audio sync issue when exporting to h.264

I've seen this issue reported many times, but can't find an answer, or whether it's simply another bug in Premiere CS5. The same issue happens on more than one computer (PC with Intel i7, 64 bit, GeForce GTX 470, and BlackMagic video card), the video is HDV using Sony Compact flash. Audio sync is fine throughout editing and exporting to standard DVD or h.264 blu-ray using Encore Dynamic link. But when I export directly from premiere to create a flash video or h.264 720p video, the audio moves ahead of the video by about 4 frames. This didn't happen with CS4. There is a similar issue if I export using MPEG2, though the audio error seems less consistent. Have wasted very many hours, and a fix or solution would be welcome! Many thanks.

Having the same issue here. Some kind of solution would make me so happy right now.
I've shot and edited a series of short interviews on a DSLR. So I've started with H.264 files and I'm attempting to export the final product to h.264 and the audio is very noticeably out of sync.
The only workaround I've come up with so far is as follows:
1. Export the audio only from the original sequence
2. Export the video only from the original sequence
3, Start a new sequence and drop in the files I just created.
When I export that sequence, for some reason, it syncs perfectly. Needless to say however, this is a huge inconvenience and time waster, especially when it comes to making further edits.

Premiere Elements 8: Audio sync problem when exporting to Quicktime H.264

Program plays back fine on the timeline also when saved as a mpeg file. QT file audio sync is off. Using QT player to play back. Any thoughts?

Check you have the very latest version of QuickTime (7.7.1 at time of writing): QuickTime 7.7.1 for Windows
Cheers,
Neale
Insanity is hereditary, you get it from your children

Problems with audio sample rate when capturing DV50

Hello from Spain, I have a problem when capturing DV50 source footage: I setup my sequence settings and capturing settings like always, DV50 codec and 48k sample rate for audio, then when the capturing process finish the result is a file that contains audio to a non-48k audio sample rate, then video and audio don´t match. The sample rate is 47945 and other similars, not always the same, sometimes 47214 sometimes 48000, and there is no rules...My capturing device works ok in other computers and the footage has been capture ok in other Mac...I don´t know what happens.
Sebas, kind regards
G5 Quad Mac OS X (10.4.6)

Hello!, first of all thanks for your reply. Yes, the camera is the same, the problem is on my computer, I have discovered a solution: first I capture the audio, only the audio, and then the video, only the video. After this I soncronize the two separate files on Final Cut timeline. It´s a slow process, but I am really desesperated. I don´t know what happens, I few minutes ago I have captured a 30 mins. video and the sample rate of the audio was 42.145k (???). It´s a crazy thing...

Audio gets lost when sending to Premiere Pro

Hey fellow Prelude users.
I encountered a nasty problem. I ingested some AVCHD Clips in Prelude and edited them and made many, many clips out of the footage. Then I sent it to Premiere for further edit. Unfortunatly at some Clips the audio is now missing, even if there's audio in Prelude. I tried to export just the audio from Prelude to match it with my roughcut but also the export has no audio at the points where the clips with missing audio are.
When importing the Clips without the new metadata by Prelude the audio is just fine. This seems to be a pretty weird issue.
Hope you can help.
Thank you,
Alex

I have run into the same problem with AVCHD footage. Initially, I thought that the problem might involve the transfer feature in Prelude CC's Ingest function. I had used that when ingesting the problem media, to move source clips to a couple of different folders on my edit station.
I subsequently realized that probably wasn't the case, since I had logged the clips in Prelude after they were ingested. So, they had sound when I ingested them, but not later, when I imported them into Premiere Pro CC.
The audio loss was complete on one clip--no sound at all on the clip or subclips when I opened the clip in Premiere. The audio loss was partial in the other clip--the audio level flatlined about three-quarters of the way through the clip. Each clip was about twenty minutes long--an interview with a subject for a documentary I'm shooting. I set subclips for each response that I planned to use in my cut of the film.
I keep my source cards as backup, so I was able to go back and re-ingest, this time without using the transfer feature. Instead, I copied the source card to my edit station, using Windows Explorer. Then I used Prelude ti ingest and log the copied media. That appears to have imported into Premiere without problem.

Audio sync problem when exporting between FCP6 and Soundtrack

Hi, I'm a newbie to this so apologies for any glaring errors.
I've recently upgraded to FC studio 2 and have exported the audio of an existing 20 minute custom format quicktime project (720x408, 30fps,) to soundtrack for sweetening.
Trouble is, when returning the audio back to FCP, the audio is shorter by several seconds and therefor totally out of sync! I've also tried outputting the multitrack audio from within FCP and bringing it back in as a single file and this is also out by several seconds. The output settings are the same as the project.
If I do nothing to the audio and simply send it to compressor; the M2v and it's aiff play in sync in Quicktime.
Any ideas or work arounds?
Thanks in advance for any advice.

Check you have the very latest version of QuickTime (7.7.1 at time of writing): QuickTime 7.7.1 for Windows
Cheers,
Neale
Insanity is hereditary, you get it from your children

Audio sync lost from AE to Encore.

I'm using AE6 with a 23.976 timeline with audio that is correctly synced in the timeline. I render using the Blueray presets and import the resulting audio and video files into encore dropping them into a new timeline. This is a full feature length film. The audio begins to drift in Encore the further down the timeline unlike in AE. Sync is lost. Anyone experience this? I'm using adobe's own presets.... The platform doesn't seem to make a difference. Madening trying to get a bluray out the door. Alternatively, one could render the AE project in media encoder, but I don't see that being any different.
Thanks!
Similar bug found in that h264 files rendered in AE at 23.976 do not have their time interpreted the same as they go to other apps like Davinci Resolve.

> Alternatively, one could render the AE project in media encoder, but I don't see that being any different.
Actually, it's a lot different.
The MPEG-2 and H.264 exporters in After Effects have a lot of problems that the corresponding formats in Adobe Media Encoder (AME) don't have. Whenever possible, use AME for exporting these formats.
What I do is export a lossless master/archive file out of After Effects and drop that into a watch folder for AME for all of my distribution formats.

Audio is lost during capture

How do I stop Premiere-pro CS4 from dropping the audio recording when the volume drops in the footage being captured.
I'm capturing footage that has silent sections but the dialouge returns later in the film. When I capture the footage and drop it in the timeline I can see the audio but it doesn't play. Why? and how do I stop this from happening in the future?

>capture the footage
FYI - capture means using a Firewire connection, which means ONLY DV or HDV video from a tape camera
So... what are your files?
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
For PC http://www.headbands.com/gspot/ or http://mediainfo.sourceforge.net/en
For Mac http://mediainfo.massanti.com/
http://blogs.adobe.com/premiereprotraining/2011/02/red-yellow-and-green-render-bars.html
Once you know exactly what it is you are editing, report back with that information... and your project setting, and if there is a red line above the video in the timeline, which indicates a mismatch between video and project

Sync drifts when capturing in FCP 7 in DVCPRO-HD

Very puzzling - captured clips in DVCPRO-HD drift out of sync. We are capturing entire 30 minute tapes shot with the Varicam, played in Panasonic 1400 deck, ingested through Kona LH via HD-SDI, onto large external eSATA HD. We have done this hundreds of times on the old G5 with FCP 6 in FCS2, with never a problem.
Now since installing the new FCS with FCP 7 in our new 8-core Nehalem mac Pro, the capture drifts out of sync. Tried many settings, cant get it solved. New Kona drivers, everything updated, prefs trashed, etc. Note that we are on Leopard not Snow Leopard.
thanks for any help. Maybe we should go back to the G5 and fcp 6!
-Peter

Firstly, this is not a 29.97 vs 30.0 issue.
You are right...because 720p is NOT a 30 frame...nor 29.97 frame...format. It is a 60 frame format. 60fps running at 59.94. And you are trying to convert that to 29.97...might cause issues.
So when most of us say "30" here in america, we really mean "29.97."
I think only Americans responded to you. A guy from Wyoming, one from Denver, and me from Los Angeles. We know what you mean.
FYI the Varicam 27F can be set up at a system level to run at either 59.94 or 60.0 but it is almost always set to 59.94 here in the US.
Yup...I know that...
However, we generally do not use the term "pulldown" to describe the extraction of the "30" actual frames from the 60 frame cadence
OK, true...sorta. Any sort of frame removal is called PULLDOWN. But is isn't as complex as 30 to 24...pardon, 29.97 to 23.976.
we have been using the workflow I described for 2 or 3 years, with excellent results.
And now it doesn't work? So, what changed in that time? Anything? If you are doing the same thing you have been doing for years, and then suddenly it stops working, then the culprit will be anything you did differently, or any new software, or new version of software that you "updated" to.
So this worked with FCP 6, but not with 7. Hmm...and you are sure that everything is set up EXACTLY the way you did before? Are you missing some setting somewhere? I don't do this conversion, so I'm not sure where to check.
Shane

Audio sync loss on capture

the other day i captured a tape - pal mini-dv, 32k audio - with appropriate settings only to find afterwards that audio was totally out of sync.
throughout the entire captured material, it was 2 full seconds late!
i deleted the captured material, created a new project with the same settings as before, captured with the same settings to the same harddisk, and now everything is fine ....
i have not changed any settings, used the same hardware, i have not even restarted the machine ...
btw audio was out of sync even in qt player - so this wasn't an fcp issue either...
still got me stumped ...

Our group commonly shoots instructionals that require 4 tracks of audio on the camera, thus 32 KHz/12-bit source in DV NTSC.
I have recently found that after capturing at matching settings, that the first clip, and only the first clip of the batch capture, is out of sync by about 1.5 seconds. All the following clips are in sync. It's gotten to the point where we need to log a short "dummy clip" to capture first in the batch, just to fool the system to getting our first real clip in sync.
We are going to try setting the sequence settings to match the 32 KHz/12-bit source and see if that helps.
Otherwise, do you recommend that we resample all our footage's audio, (both stereo pairs), to 48 KHz/16-bit and use it in a default DV NTSC 48 K sequence?
-Craig
G4 Dual 1.25 Mac OS X (10.4.2) FCP 4.5

Audio sync lost when capturing

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