Audio/Video not in sync when exported!

So after exporting a 1.5 hour movie to QuickTime, I played it back and found that the audio and video on a couple of chapters are completely off. I then checked the sequence on FCP but it's perfectly synced. What's going on here? I put Setting as Current Settings, Include Audio and Video, and for Markers I put Chapter Markers.
Should I export directly to Compressor then? But how could I keep my Chapter Markers if I do?

I really don't know for sure.
Just make sure the sequence is fully rendered (alt-R, with all render options checked in the Sequence > Render All menu) and audio mixed down (alt-cmd-R) before exporting.
Let us know if this makes any difference.
Piero

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Adio and Video not in sync when exporting QT Movie

Hi guys,
I'm having a very strange problem here. I'm using FCS2 and have edited a sequence in FCP using HD720p. In Final Cut Pro, everything is fine, I can play the sequence and the adio matches the video as expected.
When I export the sequence to a QuickTime movie, the final movie has the adio way out of sync from the Video. I have searched through this boards and noticed some other users having the same problem, but couldn't find a solution for it.
Does anyone know what would be the problem, and how I could solve this ?
Thanks a lot in advance,
Stefaan

Hi,
Well, I could try, but I'm not 100% sure that this was the exact source of the problem.
The source media where Screen Captures taken with iShowU, which I was going to use to create a video podcast with. The ScreenCast was recorded using the HDTV 720p codec with 25 frames and 44,0 KHz audio. I imported those clips into FCP6 and noticed that the Sequence preset had 48,0 Khz audio instead, so I imported every source clip into Soundtrack Pro to convert the audio back to 48,0 KHz.
I guess that is where it went wrong somehow. Since at some point FCP indicated that one of the source clips had 44,0 KHz audio and not 48,0 KHz audio ( though in SoundTrack it reported 48,0 KHz ).
I imported the stuff back into FCP and noticed that now the audio of the clips was 48,0 KHz audio, so I was ready to go. I did the cut in FCP and audio was perfectly in sync with the video. Upon export to a QT Movie ( Self Contained or Reference, immediately from FCP or through Compressor 3 it didn't matter ) the sound seemed to be out of sync after a period of time. By the end of one 15 minute clip the sound was about a minute off, which is unusable for a screencast.
Thanks to a suggestion here I exported the original clip from within FCP to a new QuickTime movie containing only the audio, and one containing only the video portion. I dragged those two on a new Sequence and did the cut again.
Once that was done, the export was perfectly in sync.
My guess is that it went wrong in Soundtrack somewhere, and not really in FCP. But I'm not 100% sure though.
I hope this helps for some others who might have a similar problem.
Regards,
Stefaan

Audio/Video out of sync when exporting to MPEG4

I am working on a project that is being edited on FCP 5.1.4
Anyhow, there is problem when exporting to MPEG4- the audio/video is out of sync.
Sequence settings show 29.97 editing base with 48 mhz sound, which is the same as the MPEG 4 settings, but they are not in sync. Anyone encounter this problem? I've never had this problem before previously.
Thanks
Caitlyn

Hi Harm,
last time you suggested the same but I wouldn't know how to take the BM card out of the equation. I only have on station. If I export to Beta SP there is no problem.

Audio and video not in sync when exporting to Quicktime file

I use a digital camera to shoot video, which is in .avi format. I then import the clips into IMovie HD (selecting all the clips and dragging all at the same time into IMovie). If I play the video from beginning to end in IMovie, the audio and video line up fine. But, when I 'share' to Quicktime file, the longer the video is, the more out-of-sync the audio and video become.
I didn't have this problem when I used a mini-DV cam and imported using a firewire cable (in real time).
Any ideas as to how to get the audio to sync up with the video once it's shared as a Quicktime file? I've tried .mp4 and .mov, and I have the same problem.

Anything here help?
iMovie: Improving audio and video synchronization
http://docs.info.apple.com/article.html?artnum=42974

Why does my audio slip out of sync when exporting?

I am exporting an HD edited video. I shot 1280x720 & editing in FCP 6.0.5. I am using APPLE PRO RES 422 1280x720 30fps 48kz . Should it be (HQ)?? - I do not select re-compress all frames or make self-contained. I just want a QT reference file to view and then burn a DVD. My clip is 43 minutes long. HOWEVER, the audio drifts out of sync BIG TIME. Why is that??
Here are my sequence settings:
1280x720 Aspect Ratio HDTV 720p (16:9)
Square Pixels
H.264
Audio at 48kHz

That's what I thought, however, when I play back the .mov file after exporting using "current settings", that's when I experience OUT OF SYNC audio. Do I ignore that and drag and drop that file into iDVD and let iDVD crunch it??? Is it just the playback of that .mov file that is out of sync?

Audio/video out of sync after export

My son Charley and I are working on a simple project, where we have imported an MP4 file into Premiere Pro, then edited it, with no problems, but when he exports the file (either to an MP4 or FLV), there is a small but noticeable audio-video sync problem on the exported file. There does not seem to be a sync or other problem with the source file, nor with the edited file as viewed within PP. But on the exported file, the audio seems to run slightly ahead of the video.
When we upload one of these exported files to Youtube or Vimeo, the sync problem seems to become more noticeable than in viewing the exported flv or mp4.
We cannot find a solution in searching the Forums. Charley consulted with another more experienced videographer, and they tried for hours to no avail.
Charley is using Premiere Pro CS5.5 on a Mac (MBP Mid-2009 2.53 Ghz Intel Core 2 Duo, using OSX 10.6.8).
We see lots of discussion about frame rate. Charley put the settings to 'match source' but maybe there is something else we're supposed to do.
He can post screen shots of all the settings, if that will help. Adobe provides no phone support for PP and just sends us back to this Forum.
Any help much appreciated.
Michael Lanning

Kevin: OK, that's helpful. Charley is at work until 3:15 Eastern; in the meanwhile, I'm trying below to reply to your inputs; sorry if some of my questions are illogical, just reflecting my confusion.
You say to match source settings, including audio sample rate, and (I think) that we should do that by creating a new sequence at which time we select the clip and drag it to New Item button. Perhaps doing that would make some of the following questions irrelevant, I'm not sure, but here they are:
We did not check the box "Match Sequence Settings" (just under 'Export Settings'); should we have done so?
On Presets, and using FLV vs H.264:
Do we need to leave the 'Match Sequence Settings' box Unchecked if we want to use a YT or Vimeo Preset?
FLV does not seem to have a pre-set for YT or Vimeo, but does have one for 'Web.' H.264 does have YT and Vimeo pre-sets. As I've mentioned, we have been trying to make this work with FLV, as Charley found that H.264 was giving us (worse) sync problems. Maybe we should go back to H.264.
You say that "if these things don't work, "...try an similar H.264 preset to upload to" YT. Do you mean to suggest that we try exporting in H.264 instead of FLV? (If that's not what you mean, and if we still work with FLV, then I don't know what "an similar H.264 preset" would be; do you mean like the 'Web' preset?
Whether FLV or H.264, I'm unclear how ensure audio sample rate matches source.
Codecs listed on source file are H.264, AAC; does that imply that under 'Basic Audio Settings' on Audio settings tab, we should use an AAC codec rather than the MP3 now indicated?
Should we be determining the bitrate settings of the source (ie, right click the file within PP to find the properties, including bitrate?) and then using that bitrate?
Or do we resolve all this about audio sample rate simply by creating a new sequence as discussed above?
I hope these questions make sense. Thanks again for your help.

Rate Stretch audio goes out of sync when exported.

Audio, which is rate stretched using the rate stretch tool to 100.01%, plays fine in Premiere Pro CS6. However, when exported to Encore or to MPEG-2 file, the audio is no longer stretched and becomes out of sync by the end of the video. When I play the preview in Encore, the audio is out of sync. Switch back to Premiere, it is OK. Export a MPEG-2 file and author a DVD, the audio is out of sync. Go back to Premiere, it is OK. I record the audio using a TASCAM portable recorder. I have recorded and synched audio many times and this is the first time that it does not work, on two separate Premiere projects. Any ideas on how to fix this. Even better, is there a way to record audio so that it matches the video (from a Panasonic HD AVCHD camcorder) without requiring rate stretch adjustment?

Try changing the speed with right click, Speed/Duration instead of using the Rate Stretch tool.

Audio/video not in sync

Hi all,
I've been having some difficulties with audio and video being in sync with FCP 7. The video is from a blackberry playbook and I have converted it to prores 422LT using MPEG Streamclip. It plays fine on quicktime, but once it goes into fcp, the audio is delayed by half a second. I've also used compressor to convert it with the same result. Here are the specs for the converted file.
Any suggestions would be appreciated.

Hi
Just thinking
Can it be so that Your - Start-Up (boot) (Mac OS) Hard Disk is going full - I never go less than 25GB free space on this one. Others do not count.
Can it be so that Your FC pref. file got corrupted - trash it (when FC is not up and running) and see if it plays OK now
Yours Bengt W

Slideshow audio gets out of sync when exported to iDvd

I made a large slideshow for a 40th anniversary party. It has 244 images & 7 songs. It is 29 min 54 seconds long. When I view the slideshow in iPhoto it works fine & the last image ends right at the end of the last song.
When I exported it to iDvd, the audio gets out of sync with the video. By the end of the first song, the video is about 2 seconds ahead. By the end of the last image, the last song is cut of by about 30 to 45 seconds. I tried exporting the slideshow directly to iDvd. I also exported it as a large movie & it did the same thing.
I'm using a 17" 1.67ghz powerbook with 1.5 gigs of ram.
I'm using OS 10.4.2.
I'm using iPhoto 5.0.4
I'm using iDvd 5.0.1
The images are scanned tiffs. I also have jpegs that I shot with my canon eos digital rebel xt.
Anybody have any ideas or work-arounds?

I suggest you either use iDVD to create two slideshows or use iMovie to get all 277 images and the 8 audio tracks into one slideshow. If you use iMovie after you get the slideshow/movie put together and completed quit iMovie. Then go into the iMovie project package (Control-click and select Show Package Contents). The find your movie in the Shared Movies folder and drag it into an open iDVD menu. This allows iDVD to to the rendering of the stills and give you a sharper image. That movie file you're dragging is a reference movie so leave it where it is and just drag it into iDVD's window.
If you can live with two separate slideshow (consider it a potty break between the two) and you don't have or need the Ken Burns effect, you can get excellent results by building the slideshows with iDVD from imported stills. The sync to audio in this method works as advertised. I like to add a blank slide at the end of the slideshow so the music fades out during a blank, black slide.
OT

Audio Drifting Out Of Synce when Exporting to Quicktime

Using FCS2 and all material is HDV 1080i60 with audio 48k. Everything in my sequence plays and renders fine and is in sync. When I export to quicktime movie using current settings the sound goes slowly out of sync so that by the end of the project the sync is horrible and the actual project is short 11 or so frames??
Any suggestions?? I have always done this in the past with no problems but since switching to FCS2 I have had nothing but problems when this comes up.

I had a similar problem when I exported a 20 minute video to an .flv Playback looked and sounded fine but the .flv file direct out of Final Cut was out of sync with audio. I finally used the Render Manager under tools to remove all renders for that sequence and then just re-rendered in one shot. That export was clean. I had tried to break renders and re-render them but it didn't work, but the Render Manager seemed to fix what ever caused it. I haven't noticed again since on any other projects. Good Luck.
Rich-

Audio / Video not in sync in FiOS tv

Hi everyone,
New to this forum and FiOS. I have noticed that fios is sending audio before the video reaches the tv. I have tested this extensively in my house with both the QIP 2500-3 on an old standard def cathode-ray tube and the QIP 6200-2 HD on both an old CRT SD set and a HDTV. It is worse in the HDTV signal inherently. It is compounded by the fact that on hdtv it is easier to see the lips move and that hdtvs have a slight inherent lag (not really noticeable normally but this is adding to the problem) in video display due to extra processing. I have tried hdmi running to an onkyo receiver then hdmi from receiver to the hdtv and also hdmi straight from the box to the tv then optical to the receiver. Either way presents the same error. My receiver has some built in audio delay functionality that allows me to slow down the video signal up to 100ms later than it was in the source; this has narrowed the lipsync error but the voices are still clearly ahead of the lips moving on screen.
It is very dissapointing that there is such a large a/v sync error in my FiOS tv signal. It is paticularly bad since it is not natural to hear voices before they are spoken; thus this is actually causing me a slight bit of nausea everytime i try to watch hdtv. I was wondering if anyone has noticed this issue, or if you have not, if you can take a close look and see if you notice this same.
I have also tried to see if there are audio delay options in the STB's in the diagnostic menus. I have not found any.
Message Edited by Zanderotto on 09-29-2008 07:07 PM

pixed wrote:
I have been having the same issues with audio sync since the IMG upgrade? to 1.6
Much worse on HD than SD. Have reset boxes numerous times. Also went from HDMI on one set to component but no visible improvement.
Have post this problem on various boards.
Is Verizon reading?
Located in Burke, VA 22015
Hey neighbor. I'm in Burke and have no sync problems. Don't know what to say.

Audio/Video out of sync on export

I am trying to export a music video I made back to my camera but the audio gets slightly out of sync. Any explanations? thanks.

HiSoup:
Welcome to discussions!
iMovie Guru Lennart Thelander put together a pretty good list here:
The problem:
http://www.dvformat.com/htm/features/2000/800/dv_formatfaq.htm
(Scroll down about two thirds to "What's the difference between locked and unlocked audio?" )
The solution:
Always use 16-bit/48kHz audio.
iMovie: Audio and Video Lose Synchronization
http://docs.info.apple.com/article.html?artnum=61636
A few possible solutions here:
http://www.danslagle.com/mac/iMovie/audio/1001.shtml
iMovie: Improving audio and video synchronization
http://docs.info.apple.com/article.html?artnum=42974
Sue

Audio and video do not sync when exporting

the audio and video content do not sync when exporting to media browser or quicktime.. at times the audio is delayed, or ahead of the video

Wow, I was just about to post something similar. I've tried 4 different times, wasted a few dvds, and tried various ways of outputting to solve this...nothing. Here's my situation;
• I have a series of stills, with music underneath...kind of like a slide show.
• That ends, both music and visual, and I go to a black screen/slug that is :22, to give some breathing room before the video that follows. Also, the audio track fades out at the end of the stills...it does not continue into the slug.
• After the :22 of black, I fade into a video. HOWEVER, everytime I've done that, the AUDIO portion of that video is starting while there's still black on screen, then when the video comes in, it's way behind.
I've adjust the audio to now end before the slug, thinking that was somehow making iMovie go wonky. Didn't work. I've wasted a few dvds before I got smart and started checking before burning. And still, everytime, that section is not syncing, but, i syncs in iMovie, where I made the video.
This is HUGELY frustrating.

Audio and video are not in sync when playing movies in iTunes

I have downloaded several movies from the iTunes store, and also ripped two digital copy discs into my iTunes library. When I try to play them, the audio is not in sync with the video. Very frustrating when you see the characters lips move, then about a second or two after, you hear what they were saying.
Any help with this would be greatly appreciated. I am running most current version of iTunes, and QuickTime.

I have looked a little bit more, and it seems as though the video is lagging behind, not the other way around. Video seems choppy, but the audio is playing perfectly. Music Videos are suffering from the same problem as well. Also, when I sync to my iPod Touch 16GB, audio & video match up perfectly.
I still have no idea how to fix this. Please help.

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Audio/Video not in sync when exported!

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