Audio/Video sync issues after exporting

Two quick issues:
1. I've recently exported a project from FCE4 to quicktime and am finding that the audio is slightly out of sync with the video everytime.
Is there an ideal format or setting I need to export at to avoid this?
2. Also, I've edited two projects using the same clips and keep finding that the second one I make seems to make the video very narrow when I export it. Is there a setting I need to use to avoid this, or does the problem lay in the setup?
Cheers!
John

From what I see in your info, the clips don't match the Sequeunce.
Furthermore, the clips are not FCE freindly. Probably required rendering?
I'd suggest using Streamclip to convert the H.264 clips to the exact specs of one of the FCE>Easy Setups, audio and video properties, then start over.
http://www.squared5.com/
BTW: Whatever you convert the clips to must match the Easy Setup, so that you work with Clips and Sequence being the same. The best way to acheive this is to start a NEW Project, set the Easy Setup first, then bring in the the matching clips.
Using Item Properties in Browser>Seqeunce/Clip is one way to confirm matching specs for both.
Al

Similar Messages

Why Wont Apple Fix AUDIO / VIDEO Sync Issues

This has been a problem for awhile. Thank god there is a application fix but im receiving an iTouch very soon and I'm not sure if the same problem is going to be on that to..
It might be how Quicktime reads .MP4 and .M4V Files but i can play the videos on VLC and Zune Software fine..
I see other people posting this exact same problems. I see no answers... Apple Knows this is an issue. Why wont they fix it.
From what im hearing it is the audio that is going out of sync from the video.
Now my Final Question is
"Is this just a Software issue for the computers or is it also a Software issue (Assuming that quicktime is the software on these devices) for the iTouch / iPhone ?

well i got my itouch today and it seems that the audio and video sync issues are only on the computer distributions of quicktime and not the hand held device versions

Audio / video sync issue in playback

for every recording i've made, when i play back the archive there is noticable lack of sync between the audio and the person's mouth. the video seems to lag behind by almost a second. the good news at least is that the delta is constant.
has anyone else experienced this? it's happening in any scendario i try, even if i'm just recording myself.
is the LCCS dev team aware of this? since audio and video streams are recorded separately, is there any way for me to programatically 'nudge' the streams into sync?
it's currently a show stopper, it looks really bad when the sync is so obviously absent.

finally getting back to this..
i did as you suggested and recorded a video of myself using the recording and playback examples provided with the SDK (the 2.2 newest version btw).
the de-syncing of audio and video is definitely there. it seems especially bad for longer recordings. however, an interesting thing i discovered in playback:
- sometimes, if i drag the playhead somewhere in the recording, pause, and then hit play, video and audio fall into sync.
- if i start playback from the beginning of the recording, audio/video is always out of sync.
i understand that the video and audio streams are recorded separately and thus played back separately. my guess is that when those streams are retrieved and playback begins, one starts before/after the other because they're not retrieved at exactly the same time. it seems some extra work is required to ensure that their playback commences at exactly the same timestamp within each stream.
i can provide my recordings as an example if required.
this is a total showstopper for me. it renders the entire recording service useless if the playback can't have sync between audio and video. i would be happy to help with testing this more. can someone from the LCCS team comment on this issue?
thanks
adam

Audio Visual Sync Issue Upon Export

Hello All,
I am having an issue I have heard many people have but cannot get fixed using the recommended suggesstions.
I am working on a documentary piece that is about 01:52:00 in length. I want to export this project for eventual DVD burning. I am initially exporting the project:
1. Using Quicktime Conversion
I have changed the "Movie Settings" to:
2. MPEG-4
3. Default "Frame Rate," and "Data Rate"
4. Changed "Compressor Quality" to "Best"
I have changed the "Size Settings" to:
5. HD: 1440 x 1080 16:9
The sound settings are default:
6. Linear PCM
7. Stereo (L R)
8. all clips are 48 kHz
9. Changed Render settings "Quality" to Best.
10. Linear PCM Settings Sample Size--16bits
Now the issue I have encountered is that the audio/video in the FCP timeline is in sync and looks great. But when I do the export the audio is about 1sec ahead of the video. I have several cuts along the piece. and this audio sync problem occurs throughout but it only comes up on the cuts. There are some clips that are in perfect sync but then there are about 1/3 to 1/2 of the clips that fall out of sync. If anyone knows what I could do to fix this I would be grateful, also I should note I am using FCP 5.

You're in the wrong forum. You need to ask your question in the Final Cut Studio forum.

Audio / Video Syncing Issues

Hello Everyone,
I own a 2011 MacBook Pro with a 250GB SSD and 8GB upgraded Ram. I'm currently using iMovie to create an hour long movie with images / audio / and voiceover in certain sections.
I have been working on this for quite some time and would like to be able to export it the same way I'm able to view it inside the Application. However, when I export the movie the audio / video / voiceover is off and it does not match with what I have worked on inside the project.
I have also tried breaking down the movie and exporting it in sections but the audio is still not syncing correctly on the export.
Please can someone help me out and help me explore my options.
Thanks in Advance,
Mauricio

Sorry for the confusion. To clarify:
The Video and Audio are OOS. Let's say that at the beginning of the Clip, the difference is ~ 12 frames off. Is it still that ~ 12 frames off at the end, or is it now ~40 frames OOS?
Though the best is to Capture with no OOS issues, the former is fairly easy to fix. The latter takes more work.
Also, whether the OOS is constant, or dynamic, might lead to figuring out where this issue is being introduced.
Good luck,
Hunt

Final Cut Audio/Video sync issues

Yes, I realize this has been discussed before, but for the life of me I cannot find the answer. So here we go.
- FC version is 7.0.2
- OSX is 10.6.3
- Processor 2.8 Ghz Intel Core Duo 2
- Memory 4 GB 800 MHz DDR2 SDRAM
I have used FC before and well acquainted. Recently I took a brush up course and used material provided in a book DVD. Had no issues while practice editing with this material.
Now have material saved I want to edit with. All video is saved on an external and in MOV format. No worries getting in imported in FC. However, every video I use starts to audio slide and by the time it reaches around halfway, full blown out of sync. Not by much, but it's definitely there.
I even took these videos and re-saved them in MOV format and same thing. With all this RAM there should be no need to shut anything down, but I did so. Same thing.
The interesting part is when using the test videos that were supplied on DVD and were imported into the MAC, no worries. Now I AM bringing those videos over from a saved file on the MAC itself, but that should make no difference. When bringing over the external movies into FC, they should react without a hitch.
Here's the fun part. ALL of these videos play perfectly on IMovie. All of them. So this makes me think there's something in the FC settings at work here. Then again, why did it not fault before?
One more thing. I recently upgraded to Snow Leopard and have seen a few glitchy items here and there. But this is the oddest.
Would really appreciate thoughts and suggestions. Frustration is setting in. And thanks

The first thing I'd check is to make sure the audio clip's settings and the FCP Sequence settings match. For example, if you use AIFF 32khz, 12 bit audio in an FCP Sequence set at AIFF 48khz, 16 bit, the audio WILL be out of sync as you describe.
-DH

Audio-Video alignment issues when exporting

Hi everyone, I'm a first-time user of this message board and I would appreciate your help.
I use iMovie HD 6.0.3 (267.2), and recently when I have exported my movie projects to iDVD (or quicktime, for that matter), I notice that the sound plays back at a slower pace than the visual part. Eventually you can see a huge gap between when the sound plays and the accompanying visual part appears. I have used iMovie for awhile and I hope it is not simply being overused, but are there any ideas on how to fix it? I'd GREATLY appreciate help.
Thanks so much.

Hi
Can it be so that Your Camera records in 12-bit audio
iMovie must have 16-bit audio (set Camera to this so further recordings will work)
Try select all clips in TimeLine (audio track view) - go up to Advance menu and
then down to "Extract Audio"
This helps in some cases.
*Not knowing the origin to Your problem - General approach when in trouble is as follows.*
• Free space on internal (start-up) hard disk if it is less than 10Gb should rather have 25Gb
• Delete iMovie pref file - or rather start a new user/account - log into this and re-try
iMovie pref file resides.
Mac Hard Disk (start-up HD)/Users/"Your account"/Library/Preferences
and is named. *com.apple.iMovie.plist *
While iMovie is NOT RUNNING - move this file out to desk-top.
Now restart iMovie.
• Hard disk is untidy. Repair Permissions, Repair Hard disk (Apple Disc Util tool)
• Garageband-fix. Start it, Play a note and Close it. Re-try (Corrects an audio problem that hinders iMovie)
• Screen must be set to Million-colors
• Third party plug-ins that doesn't work OK (not relevant for iMovie’08 or 09)
iMovie updated ?
QuickTime updated ?
Mac OS version ?
• Program miss-match. iMovie 5.0.2, up to Mac OS X.4.11 AND QuickTime 7.4.1 - is OK
• Program miss-match. iMovie 6.0.3 or 6.0.4, Mac OS X.4.11 AND QuickTime 7.4.1 - is OK (might work under Leopard)
• Program miss-match. iMovie’08 v. 7.0.1, Mac OS X.4.11 AND QuickTime 7.4.1 - is OK (might work under Leopard)
From LKN 1935. (in this case = iMovie HD (5), I tried it all, but nothing worked.
Your answer (above) has been helpfull insofar as all the different trials led to the conclusion that
there was something wrong with my iMovie software. I therefore threw everything away and reinstalled
iMovie from the HD. After that the exportation of DV videos (there has not been any problem with HDV videos)
to my Sony camcorders worked properly as it did before.
Lennart Thelander
I run "Cache Out X", clear out all caches and restarts the Mac.
Yours Bengt W

Audio/video sync issues at chapter points, on certain DVD players

I created a DVD using DVD Studio Pro 4, had it replicated at a manufacturing facility, and have now sent out copies to approximately 600 people. About a dozen or so of my customers have experienced issues where at the chapter points for the film (a 60-minute documentary) the audio and video go out of sync. Unfortunately I can't describe this issue any more accurately than that because I haven't seen the problem. The disc plays fine on the vast majority of players. The people that are experiencing the problem have DVD players like the Sony DVP-NC655P and the Samsung DVD-R120.
Does anyone have any clue at all as to what the issue could be?
Thanks very much.
G5 Dual 2.5 GHz Mac OS X (10.4.10)

Is your audio PCM or AC3? If the audio is going out of sync on onlyl a handful of set-top players, the build is probably OK, and your media is probably starting out in sync. I suspect that your bit rate may be be too high, and the audio is chiking the buffer on the player, making the audio go out of sync. What format of audio is on the disc, and what is combined average/maximum bit rate?
Hope this helps -
Max Average

Audio / video sync issues

We are using JMF with FOBS4JMF - on some computers our player has an issue with the audio and video getting out of sync with FLV files - any ideas? Is it related to frame rate?
Also, if we capture to a MP4 - the video plays but we do not get any audio - but the same file played in QT plays just fine. Any ideas?

JMF doesn't support MP4 or FLV videos, the support for those are coming from FOBS4JMF, which is a 3rd party add-on to JMF. It's the policy of these Sun forums that 3rd party add-ons and libraries are not supported here.
As such, you'll need to get FOBS4JMF support from the FOBS people.

Audio/Video Syncing Issues on Capture

Hey guys,
I've imported several tapes from my Sony V1u HDV camera, and I've been having the same issue. I am capturing the video over Firewire, and every tape I capture, the resulting MPEG file in Premiere Pro is not in sync. The video and audio are there, but they are not lined up at all. Any ideas as to why I'm having this issue? Thanks!
Cody

Sorry for the confusion. To clarify:
The Video and Audio are OOS. Let's say that at the beginning of the Clip, the difference is ~ 12 frames off. Is it still that ~ 12 frames off at the end, or is it now ~40 frames OOS?
Though the best is to Capture with no OOS issues, the former is fairly easy to fix. The latter takes more work.
Also, whether the OOS is constant, or dynamic, might lead to figuring out where this issue is being introduced.
Good luck,
Hunt

Capture Now Limits- Audio Video Sync Issues?

In a creative cow podcast the author mentions that if you capture in FCP for more than 30 minutes, your audio and video can go out of sync, and recommends limiting capture now to 10 minutes.
I was wondering what the communities thoughts or experiences were on this.....
Thanks!

I'm having similar problems although I never used to. But note:
I'm having sync drift problems with material shot with and capture from Sony DV Cam devices. Different clips have different degrees of drift from 1 to 12 frames.
For now, I think I shall resort to a 10min log and batch capture approach.
Aldo

Audio video sync issues with iMovie 11

Hi: I've been using Roxio Video Capture software to convert VHS tapes to digital (quiktime) movies in preparation for saving them on DVDs. Most of my clips seem to have synchronization issues and I am at a loss as to how to fix them. Most of the historical blogs and forums get either very technical or simply do not work for me. I am far from being expert at using iMovie or performing editing tasks so I could use specific expert help with this problem. So far I have learned how to detach the audio, but am at a loss as to what to do with it once I detach it

Hi socalhkc!
I have a couple of articles that might be able to help you adjust the audio in your iMovie project:
iMovie '11: Set the beginning and end of a sound or music clip
http://support.apple.com/kb/PH2258
iMovie '11: Extend a video clip’s audio over the next clip
http://support.apple.com/kb/PH2260
I hope that provides some guidance for you. Thanks for being a part of the Apple Support Communities!
Regards,
Braden

TIMECODES are important for audio and video sync issues

Hello, just wanted to pass on what I learned so that others can avoid the trouble that I've had to go through. Perhaps this may help someone who is stuck on the launch pad. :)
BOTTOM LINE: Info for the beginner. Audio and video not in sync in Premiere Pro CS3 V3.2.0
PROBLEM: Capture works great it seems. When I go to the folder that contains the captured file and view in Windows Media Player audio and video are in sync. BUT when viewing the video asset in the source and program monitors, the audio and video are not in sync.
SOLUTION:
Before capturing a tape make certain the following is checked:
(1) Edit->Preferences->Capture->Use device control timecode
(2) Edit->Preferences->Device Control->Options->Timecode Format
(3) Project->Project Settings->General->Video->Display format
As for the devices timecode choose something other than Auto Detect. Then match the project timecode with what was chosen during capture. The projects display format could of course be set to frames.
I searched everywhere for audio and video sync issues in google, adobe forums, F1 help, and hv20.com and everyone was talking about:
(1) Presets: 1080p30 vs. 1080i30 (60i).
(2) brakes in the tape where timecode for the audio and video get misaligned during capture.
But choosing the correct hardware settings and timecodes to solve audio and video sync issues never popped up.
MY HARDWARE: Canon HV30, HDV

>Audio and video not in sync in Premiere Pro CS3 V3.2.0
Must be an HDV only issue because my synch is always perfect.

Audio Sync Issue After Rendering

I am working on a project, with most of the original clips from Quicktime files (imported from DVD using DVDxDV). Audio/Video sync is fine when working with the clips in the bin/browser/viewer before adding them to the timeline throughout the process of making subclips, etc... However when they are actually in the timeline and rendered a greater than 1 second slip between the audio and video occurs.
Suggestions?
Thank you.
Message was edited by: gratefulredhead

I should also tell you that there has been an instance when two sub-clips of the same source were rendered, that one was synced correctly and then the other was off, which is quite confusing... The slip in sync is almost 2 seconds!

Audio Video synchronization issues

Hi,
I have a video application that I am building - and
previously I used FMS and TCP connections for video. Now expecting
the latency to be much lesser with UDP, I implemented UDP in my
application and stratus as the RTMFP capable server. I used the
sample video phone application's tutorial do a simple sendStream
and receiveStream for video.
However, unlike the hosted sample application itself, my
audio and video are completely out of synchronization - about 4
secs!! I tried to look at the sample code to see if there were any
special settings that were made. I could not find any.
My questions:
1. Did Adobe make any special tweaks in their hosted sample
application? If so, what are they?
2. Are there any known synchronization issues with using
RTMFP connections for video?
3. Does anyone else also face audio video synchronization
issues?
4. If none of the above is true, what do you think my
mistakes are? Please let me know if I need to add more information
to answer this question.
Thanks in advance.
Rohan

with RTMFP, video and audio can go out of sync if the data
rate of your stream exceeds your network capacity. video is
currently sent with 100% reliability, so once it's queued for
transmission, it's going to be sent (eventually). video is lower
priority than audio, though, so your audio data gets first dibs on
your network capacity. if the video stream's data rate is higher
than what fits in your network (after audio), the video data will
back up until its send buffer is filled, and new camera frames will
stop getting captured. in the steady state, this can look like a
multi-second offset between the video and audio.
try turning your video rate/quality down so that it fits in
your network capacity. video and audio should stay in sync.
with RTMP, there's one network transmission buffer (TCP's)
for all of the parts of your stream (audio & video). when you
have insufficient network bandwidth, the TCP buffer will eventually
fill up and video frames will stop being captured to compensate. so
while audio and video might remain in sync, the total end-to-end
latency will go up. when using RTMFP, the audio and video have
independent transmission buffers, so in cases of insufficient
network resources, the higher-priority audio should remain more
timely but video may fall behind.
-mike

Audio/Video sync issues after exporting

Similar Messages

Maybe you are looking for