Captured content: Audio is out of sync from video

When I capture video off my Panasonic AG-DV2500 into FCP 5, the audio is around 17 frames behind. Does anyone have some advise for this problem?
G5 Tower Mac OS X (10.4.8)

It's not in the monitor. In recent projects, I've corrected the audio by 17 frames, and the final export does not reveal anything different. Good thought though.

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Teouble with audio becoming out of synce with video.

Hello, I'm using final cut to edit my videos but for some reason, FCP has been giving me some issues. In my work flow I often layout two long video track in the timeline, then I will chop up the top track to create transitions from the top to the bottom and vise versa. as soon I press play, it the video will start off in a slower speed almost as if the computer is overloaded, then it catches up to normal speed in about a second. This has really been driving my crazy. It also effects the way video syncronizes with audio. I can lay both video tracks on top of one another perfectly in sync with the audio, but as sometime once it get's to new scene or the video switches to another track the audio is no longer in sync with the video. sometimes I can stop the footage, then press space bar to copntine and the audio and video will be in sync. This is really weird and I was wondering if anyone has any answers for me. I'm pretty sure it's not an overload on the system because the projects are rather small, and I'm using a quad core 2.5, with 5 gig of ram. and this is my graphic card info
NVIDIA GeForce 7800GT:
Chipset Model: GeForce 7800GT
Type: Display
Bus: PCI
Slot: SLOT-1
VRAM (Total): 256 MB
Vendor: nVIDIA (0x10de)
Device ID: 0x0092
Revision ID: 0x00a1
ROM Revision: 2152.2
Displays:
Cinema HD:
Display Type: LCD
Resolution: 1920 x 1200
Depth: 32-bit Color
Core Image: Supported
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Supported
HWP D5259A:
Resolution: 1280 x 768 @ 75 Hz
Depth: 32-bit Color
Core Image: Supported
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Thanks so much for you time.
Mike

Yes. Those that are designed to work with A/V files will work better.
Drives from G-tech and Granite Digital are worth a very close look.
However, if you have an empty drive bay in your G5, a second internal SATA drive is the better choice.
good luck.
x

Clip audio is out of sync with video

After analyzing the clip the code tells the tale. The audio is "shorter by 1 1/2 seconds yet the time line doesn't reflect it. I want to fix the problem but the tool I found requires the clip (red rectangular box with the +/- info.) to option/click on to be given the re-sync tool action. Other solutions require complicated solutions. My question is "What happened to cause this sync problem and how can I avoid it in the future. ie: no evidence of =/- red boxes to show that there is a problem even thought it clear when you look at the video clip ?

We are missing fundamental information:
What codec does your source footage use?
What is the audio sampling rate on the source footage?
What are the Sequence settings in FCP and does what you see there differ in any way to the properties of the source footage?
Version of Mac OS X, FCP and QuickTime?
Also; if you have a 2 x 3 GHz Dual-Core Intel Xeon Mac OS X 10.6.6, it's a Mac Pro, not a G5.
Message was edited by: Nick Holmes

Audio is out of sync with video

I have a project that includes still photos, video clips and background music. I did all the basic stuff (clip trimmer to mark the beats, aligned the photos/videos to the beats, etc.). It all works well except there's a glitch in the transition between two of the videos.
At the end of the first clip, there's a short segment (1-2 seconds) where the first clip turns into a still and the audio from the second clip starts while the first clip is still displayed. Throughout the second clip, the audio is off. If I start playing from the second clip, the audio is in synch.

iMovie: Improving audio and video synchronization
http://support.apple.com/kb/TA25603?viewlocale=en_US

Audio drifts out of sync with video

Hello --
I just watched the pilot for Conviction in iTunes on my PowerBook. The audio was just fine at the beginning, but by the end of the episode the audio was about 2 seconds behind the video. Everything on my system is up to date (OS, iTunes, Quicktime). Are others experienceing this and can it be corrected. I tried just pausing the video and restarting it but that did not correct the problem.
HELP! (and thanks)
-- Steven

so new versions of iTunes have seemed to correct this problem.

Audio is out of sync after capture.

I'm attempting an firewire capture from a DV source. When I'm logging clips and previewing them, the sound is fine, but when I view them after capture the audio is out of sync. I think I'm having timecode issues, is there any way around this?

I tried watching them in the timeline and viewer, all out of sync. No external monitor. I did get a message once about dropped frames and something else, it said I might have these issues, but it didn't tell me to change settings, just told me it was gonna happen, lol. So, I don't know where to start to fix it.

IMovie: I uploaded HDV video from a Canon HV20 and then to YouTube. The video and the audio are out of sync. The audio seems to precede the video by a tiny bit which is disconcerting. Any recommendations about how to correct this? Thank you.

I downloaded video via iMovie from my Canon HV20. The video was in HDV. I then published it to YouTube and Vimeo and in both cases, the audio is out of sync: the video precedes the audio by a fraction of a second. The original is fine as viewed in the camera.
Any suggestions as to why and how to correct it?
Thank you,
David

Anything here help?
iMovie: Improving audio and video synchronization
http://support.apple.com/kb/TA25603?viewlocale=en_US

Video and audio goes out of sync when imported into Premiere

I have some videos ripped from some DVD that an acquaintance made, with an open source program called HandBrake, with the default "high profile" settings. When I play it both in VLC and in Quicktime, it plays just fine, but when I import it either in Premiere or in After effects, the video and audio goes out of sync (the video ran faster than the audio and when the video stops, the missing audio is trimmed).
Video info according to Premiere (in Spanish but you may get the meaning).
Ruta del archivo: [...].m4v
Tipo: Película MPEG
Tamaño de archivo: 667,7 MB
Tamaño de la imagen: 720 x 480
Profundidad en píxeles: 32
Velocidad de fotograma: 29,97
Formato de audio de origen: 48000 Hz - comprimido - Estéreo
Formato de audio del proyecto: 48000 Hz - Punto flotante de 32 bits - Estéreo
Duración total: 00:30:35:15
Velocidad media de datos: 372 KB / segundos
Proporción de píxeles: 0,8889

"HandBrake, these days, is almost entirely about H.264 video, aka MPEG-4 Part 10. HandBrake is migrating to quality-based encoding."
Hmmm. I use HC Encoder to make my DVDs because it's the only free encoder I've found with the much more professional Constant Q encoding option. But HC Encoder doesn't do HD sources for Blu-ray, so I've been wondering if I'd be stuck with the lame-*** consumer CBR and VBR options most encoders provide (including Adobe - hint, hint) when I eventually start working in HD. This is a very interesting program, Handbrake. I will have to check it out.

Captured audio is out of sync

I captured a 12 minutes clip using Capture Now in FCE 3.5 from my PAL camcorder Canon MVX4i (=Optura 600).
This is the first time it happens to me: the captured clip has the audio portion out of sync with respect to the video by 5 frames. So, the audio is consistently 5/25 fps = 0.2 seconds late during the whole clip. Unfortunately, this is quite visible when people are speaking.
As a workaround I set the clip in the timeline, unlinked the audio, shifted the video portion forward by 5 frames, marked the clip in sync and relinked (BTW it took me a while to find out that 5 was the right value: lot of tests adding and subtracting a frame at the time, and listening ...)
I doubt the cause is the camera, so my question is: what is the cause of this out of sync ?
Thanks
Piero
Some additional info.
I used the same setup I've been using so far: camera directly connected to the iMac, capture to an external firewire hard drive, use of Capture Now just because it's faster with short movies. Tha movie was shot with 16 bit audio. The shift is the same all along the clip.

Hi Ian,
I'll check tonight once more, just to be sure. I doubt though, because being aware of the possible impact of the 32KHz, I am usually careful. But I also know that editing after 11 pm is not recommended to me... I might do silly mistakes...
In any case, I'm afraid there is a problem with the tape. Could a damaged tape causes out of sync during capture ?
Thanks
Piero

Audio goes out of sync when Blu-ray folder is exported from Encore CS6

I compile a project in Encore using H.264 and .wav files. The audio plays fine directly from the timeline. It also plays fine when I preview it from Encore. When I finally export it as a set of Blu-ray folders, the audio exports out of sync with the video. It is approximately 6-7 seconds ahead of the video. What am I doing incorrectly? When I mux the files into an .MKV, the video is in sync with the audio so I know the files themselves do not have different start times.
I am running with an HP Z820 with Windows 7, 64-bit OS and 16GB RAM.

For anyone who's interested, I found a solution to this problem. Once imported into Encore, the leader in on the video and audio files cannot be trimmed at all. (I had been trimming the beginning of the video and matching audio file to eliminate the 8 seconds of dead space at the start of the clips.) Although the trim took effect immediately in the Encore timeline and I could also watch it in preview in sync, exporting was another story. The audio track seems to retain the trim when exporting but the video track does not, hence the 6-7 second delay between audio and video.
I reimported the files to my project and left in the 8 seconds of dead space at the start and voila! The video and audio match up when exported.
Ideally the trim tool would just work as its supposed to through export and all, but at least I found a solution I can work with.
(As a note, the trim works just fine in export on Encore CS5. I only had this problem with Encore CS6.)

Captured Video's Audio is out of Sync

I have captured a MiniDV tape
at NTSC/48KHz via Firewire
and the Video's Audio is out of sync
in both the Viewer and Canvas
The original tape playback is fine
so I'm not sure why this is happening
My Capture Presets are correct and
I re-captured the same clip twice and
the same Sync problem persists
Please advise, thanks

Silal,
I noticed that your response, here was based on a 32 Khz audio setting. Can you elaborate a little more on why this would tend to throw audio and video out of synch?
I am capturing DV NTSC, 32 Khz video and audio, (via. mini DV tape) The clip that I am importing is one, long, 60 minute clip. Even though I have created a new setup that indicates the audio will be captured at 32 Khz, I am finding serious video/audio synch problems towards the end of the clip.
Typically I use the DV NTSC firewire, 48Klhz setting when I create a new project but I don't usually capture long clips like this. Can you offer up any suggestions on what I might try to remedy this synch problem?
The material that I am using is an already edited piece that was dumped onto miniDV tape. I need to re-capture this material to FCP so that I can re-order its segment positioning for a new DVD. The tapes have solid time code but I am getting those annoying synch issues when I review the footage after capture.
Where else should I be making adjustments to my project settings other than where I have already made them? Thanks.
Steve

Audio out of sync from demuxed program stream

Hi All,
I've been trying to resolve this problem without any success. I recently ripped some video from a dvd in order to make a backup. I extracted the title I wanted as a muxed program stream. I then used MPEGStreamclip to demux into .m2v and .ac3 files. I imported these into DVDSP and burned the disc. The result is that the audio drifts out of sync over the course of the length of the video (about 1.5 hours). I've done this same exact procedure many many times and haven't had this problem before. In fact the video will play back in perfect sync in both MPEGStreamclip and VLC. I did notice when importing the files into DVDSP that the length of the ac3 file shows a difference of almost 4 seconds (shorter) than the video. So obviously this is the problem. I just can't understand why if the video plays back perfectly its not being extracted properly by MPEGStreamclip. I also tried demuxing with BBDemux, which produced the same result. I then tried with the demux tools in ffmpeg and that process started creating numerous different versioned files of the original file and actually ended up running out of disc space.
Has anyone run into this problem before and found a solution?
Thanks,
Chris

Ok, I understand what you're doing now. But you're losing some quality by going to 422 and then back to m2v again, not to mention the extra time required for the encoding.
Thanks,
Chris
KADVD wrote:
Hi Chris,
I have used this method frequently when issues arise,
I use the original "Video TS" from the DVD, open,
Then open Streamclip, select the VOBs in the TS that don't end in a zero,
and drop them into the streamclip window, singly if needed, then convert
to (I prefer) pro res 422 SQ, I like the results better than DV.
assemble if needed in FCP, match sequence settings to clip, and
verify audio and video are in sync, then use compressor to create
your m2v and ac3.
Depending on how the original DVD was authored, menus, tracks etc.
the ".0" VOBs will frequently contain a 1 sec. black slug, this can
throw the audio out of sync when the video is extracted.
if there is a motion menu this will become a video clip, usually
in VOB "1.0", you probably don't want that.
Hope this is a clearer explanation.
J>H<L</div>

When I use media manager to upres clip audio goes out of sync

I captured a clip and put it in DVNTSC 48kHz timeline at OfflineRT NTSC (Photo JPEG) then used the media manager to create a new sequence at full DV NTSC 48kHz res. I choose "Create offline", "set sequences to DV NTSC 48 kHz", and check all the boxes. I save a new project, open the new timeline and recapture the clip. The video looks great--it recaptures in full DVNTSC 48kHz res. But the audio is out of sync (by about 28 frames it looks like). What am I doing wrong? (This is the first time I'm trying this offline-then-online-process.) thanks.

Try exporting the iMovie project as a single full quality dv format quicktime file.
I use iMovie6 HD and this is my usual procedure that works well.
Make the movie in iMovie, will involve many separate clips. When finished, export (share) as a single full quality dv format quick time file. When I have an hours worth of smaller projects, I create a new iMovie project and import all of the quicktime .dv files for each separate short project. I add chapter markers in this project, then share with iDVD. I then burn an hours worth of stuff at best quality and distribute to family and friends.
iDVD seems to work better with iMovie source that has fewer clips.
BTW: Are you having problems with standard def or hi def iMovie source. Another part of my procedure is that I take the raw tapes and download the entire thing into one iMovie project. I don't edit or change the footage at all, just want to archive to DVD for posterity. In this case, I want to share the iMovie project with iDVD directly. This has worked OK for standard def projects, but my first hi def project (1080i) that I tried, the sound was out of sync. To fix this, I had to create a regular DV widescreen iMovie project, and drag all the clips into it from the HD project. It took over an hour for my humble mac mini to convert the files, but I was then able to share with iDVD and the finished DVD worked ok.
Hope this helps.

Exporting to HD - audio is out of sync

Hi
(I'm using Elements 4 and Vista.)
I've completed my video and all looks great on preview and in timeline - however, when I export to the HD (whether it's windows media or mpeg etc) the audio is out of sync? It seems to be in slightly different places too...
(I have rendered etc).
Any ideas?
Many thanks
Z

It's most likely related to your source video. This is especially common with video captured by a program other than Premiere Elements.
What type of video files are you using as your source -- what kind of camcorder did they come from and how did you get them into your computer?

DV import - audio is out of sync 3 frames

This never happened to me in FCP, so curious as to why audio is out of sync 3 frames...
Footage is DV/NTSC 48K/16 bit, (footage is not shot w/this camera but) I am importing with my SONY hdr-hc7 (as usuall).
Thanks

Hi, thank you for your responses...
I know the sync on the actual tape is fine because I also captured into FCP to compare, and the audio was fine there... I also played back directly on a TV from the tape, and it was also okay. I noticed more when I actually exported my edited spot viewed in QT player, and it was out of sync. That is actually where It was most noticible... Then I opened a captured clip directly in QT Pro 7 and it was out of sync. I then imported the clip that I captured via Premier into FCP, and again out of sync...
This has never happened in FCP in my many years of using it... I tihnk it may be a Premier Bug, as I searched and found some similar sounding issues.
Or perhaps some setting was wrong, who knows. I don't know how much longer I will be capturing DV but if there is a fix out here it would be great. And its not a huge issue, but it is rather cumbersome having to re-adjsut each clip by 3 frames.

Captured content: Audio is out of sync from video

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