Audio out of sync with optical out

Hi,
I've connected audio from ATV 2 times to my receiver. My Sony television has an optical out connection so it can act as a passthru for audio to my receiver. However, it's always stereo, I can't get surround from it. Apple says it sends the same audio over HDMI and optical out. So I connected ATV directly to my receiver with the optical output. Result: I do have surround now. So I guess my Sony is at fault for not passing along surround.
This is my setup:
1) ATV -> HDMI -> Sony LCD -> optical out -> receiver
2) ATV -> optical out -> receiver
My problem:
Setup 1) gives me no surround but audio and video are synced perfectly.
Setup 2) does give me surround, but audio and video are OUT of sync.
My video is generated by Handbrake 0.9.3 and contains both AAC stereo and AC3 surround passthru.
It's strange, because if you have this audio delay problem you would think it's caused by the television because that's an extra device sitting between source and receiver.
Any ideas what is causing this problem? Is Handbrake not able to add AC3 correctly or is ATV playing sound in sync over HDMI but not in sync over optical out?
Thanks,
Jef

Thinking about this a bit more, I think I could have an idea as to what the problem is - the AppleTV firmware. I believe that there is a timing difference between HDMI and the optical audio output. Let me explain...
My AppleTV is hooked up using HDMI for video only (direct to my TV) and the optical is hooked up directly to my audio receiver. Since there is no setting in the AppleTV menu to choose the output for the audio, I have to assume that it's sending audio through BOTH the optical output and the HDMI output simultaneously. If the timing for the audio signal is slightly different, then that could cause the audio to be out of sync. Since the HDMI signal carries both audio and video, it makes sense that it would remain tightly in sync. But since the optical is separated it could, theoretically, not be synced with the video.
As I said, both of these AppleTV units have been hooked up the identical way that they are now and have never exhibited this problem until the 2.3/2.3.1 firmware updates.
I also noticed that unplugging the unit from power for 10 minutes, plugging it back in and testing the identical file that minutes earlier was out of sync, that the video and audio were much closer to being in sync. Does this make any sense?

Similar Messages

Audio is off sync with videos on Ipod Touch.

My Ipod touch does not want to seem to play the audio in correct sync with my videos anymore. I have not done or changed a thing lately. Does anyone have any ideas? Thanks. I am running firmware 1.1.5

Update My iTouch is downgraded to 1.1.5 successfully. I used a pc that had an un updated version of iTunes installed (7.6) and after 2 attempts using the power off + home combination described in the firmware 1.1.5 post, I was able to successfully "restore" to the latest "1.1.5" iTouch software. When the touch reset, before establishing a sync relationship with the pc, I reattached it to my mac and selected "new ipod" rather than restore from backup. I then synced and tested on of the previously screwed up videos. It plays without any audio sync problems. This processes is more or less what the genius bar instructed me to do. I was reluctant to download any software not coming directly from apple. If anyone knows where the firmware file is stored on iTunes PC version, I would greatly appreciate the location. I want to save the file on my mac now that I know this is a good version. When Apple comes out with 2.1, I want to have a fall back.

Audio not in Sync with Video in FCP

Hi People, i'm new to this, hoping to find some support.
I have Final Cut Studio 2, im doing an Apple Pro Training series book - 'Final Cut Pro-Beyond the Basics' and im having a problem of the audio not syncing with the video. If i simply play the sequence, the video is ahead by about 7 seconds, and if i stop and start playback (edit) it remains out of sync. However, if i let the sequence play through and loop, when it restarts at the beginning, it appears fine and all fixed, until i stop plyback and start it again. So, the only way to have it work right (to check my edit) is to continue to let the sequence loop and it fixes itself?? In QT it says the clip is DV 720 * 480, 23.98 fps, and so ive checked that in FCP, the settings are the same, and ive played around extensively with the real time plyback settings and sequence settings, but nothing fixes it apart from letting it play til it loops!!!???
Has anyone had this??
Am i missing a setting here?? It seems to have been like this since the update to 10.5.3
Thanx!

Hi People, i have found the answer to my question and thought i might post the cause so anyone else who gets caught can get it sorted.
The answer ended up being that i had an aggregate device as my audio interface (because i have 2 audio interfaces) and so the audio was being delayed in being processed. So i deleted the device in my Audio MIDI Setup (audio page) and thhus, its all good. Quite painfull after a FC reinstall! Ha!!
Cheers

Audio not in sync with TV download

I just downloaded "Lost" from iTunes.
The video streaming was excellent, but the audio was out of sync with the video.
Is there a fix I can do?
Morgan

I just bought a used ibook G3 and am having the same problems with video and audio being out of sync with itunes. Lost TV show, the video is slow and audio is correct. video pauses for a sec while audio goes on. I have the lastest version of quicktime. Any idea how to fix this?
Tina
iBook G3 Mac OS X (10.3.9) 800 mhz 384 mb SDRAM

TS1718 Movie audio does not sync with movie

Hi,
The movies I have bought through iTunes store does not work properly. I bought two last week and when trying to play them back over the weekend, the audio is not sync'd with the movie playback. I have a Winodws 8 laptop and enough space for the films to be played. The software is all up to date and can therefore see no problem as to why this should not be working. Does anybody know of any way to resolve this to allow me to watch the films?
Thanks,
G

Hello grs1989,
Thank you for providing the details about the issue you are experiencing with audio out of sync with video in iTunes. I found an article with steps to address issues with audio and video playback being out of sync:
iTunes and QuickTime for Windows: Audio does not play or plays incorrectly
http://support.apple.com/kb/ts1362
Thank you for using Apple Support Communities.
Best,
Sheila M.

Bluetooth audio not in sync with video on iPad 2 with iOS 6

I noticed that after I upgraded my iPad 2 to iOS 6, there was a problem with I use my A2DP Bluetooth headset (Jabra Halo) with my iPad 2. The audio is no longer in sync with the video playback! And it's really annoying. This problem does not exist when I plug in a headset to the iPad.
Is anyone else facing this issue? I only has one bluetooth headset so I'm not sure if this is a problem with my Jabra Halo headset or the iOS 6. This used to work without any issues with iOS 5.

Hi mynew:
Welcome to discussions!
Did you make the video in imovie and send it to iDVD?
Read this and fill in iMovie 6 where iMovie 3 is..
iMovie: Improving audio and video synchronization
http://docs.info.apple.com/article.html?artnum=42974
Extracting the audio from the video and using 16-bit instead of 12-bit are explained there.
Sue

Audio not in sync with video in imovie 08 version 7.1.1

I am importing many Hi 8 tapes using a Sony video walkman GV-D800 thru a firewire 400 port on my Macbook pro, when I play it back in imovie the audio/voice is not in sync with the lip movement of the people in the video, there is a 1-3 second delay. If I play back the same video I captured using QuickTime Player there are no sync problems? I am new at this so what am I doing wrong?
BTW. I also imported HDV using my HDV camera and there are no sync problems at all. Any suggestions are appreciated.

Welcome to the  Discussion Forums.
Is this delay present on your exports or is it merely when previewing in imovie.

ITunes 11.01 on Windows 8 audio will not sync with video

I have a new computer that is running Windows 8, and I have had no issues with iTunes 11.01 thus far on it other than the fact that when playing videos, the audio will not sync up with the video.
With the ineptitude that seems to define Apple as of late, there does not seem to be any actual support for Windows 8, and the "support" channels do no good at all.
Any ideas as how to fix this problem?

I think Microsoft made the Windows 8 incompatible with Apple products on purpose, they want windows users to have to download apps from their paid service which is more expensive than Apple's App/iTunes Store

PVC2300 recorded audio is not sync with video

Hi all,
I have a big big problem with my new PVC2300 network camera:
when I recording (from browser interface) the audio of the .avi file is not sync with video... in details in a record of 12-13 minutes the audio ends 8-10 seconds before the video... and I suppose that more lenght is the recorded file and more lenght is the desync between audio and video.
I use MPEG4 video stream at 640x480 30 fps and audio G.711 A-Law in mode "simplex - listen only".
For my usage this is a very big isssue... I hope there is a way to fix it.
Thanks in advice
Robert

I tried for 2 days for all possible configurations, editing: frame rate, quality, resolution. and type of stream (MPEG4 or MJPEG).
The only case that the recorded audio and video is sync is setting the SMB protocol to autorecord to a NAS.
But this mode have a lot of problems (.asf format, large file size and continuos recording without the ability to start and stop the recordings).
I think that the desync is a bug (a very big bug) of yours activex control that makes the recording.
I have find more or less a workaround using the Cisco Client... the program get an error on start (after unintall and install few times, and a lot of test, I understand that the only way to use the Cisco Client is running it as administrator.
Ok finnaly the cisco program works, but using it I found another problems:
after recorded, I tried to export a part of recording for testing the audio-video sync... the program gives me 2 format: AVI (without the ability to choose any other options) and ASF (with quality options). I tried first AVI format... the result sucks: bad video quality, 1,8 GB every 20 minutes and audio desync... no comment! ...then I tried the second export format: ASF...thats OK, the result is good... audio finally is syncronized with video.
My system is Windows Vista SP2 (32bit) and Internet Explorer 8... I tried also from an other pc with Windows 7... same problems recording from browser interface. I have installed on my system the lastest video codecs (for example: divx etc.).
For my usage I can use the Cisco Client but my ideal usage will be recording from browser.
I think these problems are very serious for a product as is this camera.
I hope there is a way to resolve they... maybe with a future firmware update or installing an other software.
Thanks
Robert

Audio not in Sync with Video

When I play back the video from the camera, the audio is not synchronized with the video. The video appears to be behind by about 2 seconds. Is this normal or is there some setting to correct the problem?

Yes, there is a simple correction.
The problem is in your computer, it lacks enough power to operate to your satisfaction.
This has been posted before....... I reciently purchased a powerfull laptop because i could not enjoy my videos on my 2.4 mhz single core older computer.
Your camcorder is more powerfull than your computer is...Ha,Ha,Ha....
You can do as I did, set your Vado HD to VGA mode, this will ease the requirements of your computer a little...but then when you get a modern computer you will wish you had all your videos in HD+.........
Harry

Audio no longer syncs with video thanks to some frame changes I made - HELP

I had frame issues with a feature-length movie recorded at 24p and edited on a 24fps timeline. My early settings led to a repeat frame every 3 frames. I have since changed the pulldown, though I don't know from what to what to be honest. Maybe it WAS 2:3:2:3 and now it's 2:3:3:2, or the other way around. Not sure at this point.
I made other changes, too. I found a setting to change from interlaced to progressive, which only made sense since my footage was captured on the progressive setting on the Panasonic DVX100. So I changed that, too.
I may have changed another setting or two as well until the video looked more accurate and lost the 'flicker' or 'jerky' appearance on long, tracking shots.
Through all these changes, the audio didn't suffer anything. Now, with a new audio mix from my sound engineer, the dialogue matches perfectly for the first several minutes, but by the end of the movie, it is off by several seconds. I have tried to revert to my original video settings to see if I can sync the video and audio, but I have had absolutely no success. Even the earlier audio mixes that kept sync through the video changes are now out of sync.
And the movie's length has not changed.
HOWEVER... my music selections have held their positions perfectly throughout. I am at my wit's end with this and I am, no doubt, lacking in explanation to expect one of you experts out there to solve my problem. Anyone who is willing to take a shot at this, please let me know!
I should mention, too, that I have opened a backup copy of the movie from another hard drive - a backup copy saved before any of the video settings were altered. And that file has the same problems, too. I'm frustrated with the way Final Cut handles system preferences and doesn't adjust to the preferences of the individual file, but rather the last saved settings. Makes it difficult to backtrack.
Again, thank you for struggling through this tome and accept my gratitude in advance for any effort given to assist me!
Justen
Message was edited by: prov

It's going to be very important for you to figure out what format your video was captured in. You have almost definitely been editing at a frame rate that was different from the frame rate of your video, which is why you were seeing problems with panning. Have you been watching the video on an external television or just on your computer screen? Chances are there isn't a quick fix for this issue. You're either going to have to learn about this technical stuff or you need to find someone who knows about it who can troubleshoot with you in person. I've written a little bit about editing in 24p on my website. This post is a good start. http://www.kylegilman.net/2007/03/01/24p-headaches/
<Edited by Moderator: Insert Disclaimer to URL>
DISCLAIMER: I may receive some form of compensation, financial or otherwise, from my recommendation or link.
Your audio was probably not recorded in Pro Tools, it was edited and mixed in Pro Tools. How was your audio recorded on set? Did you have microphones going into the camera or did you record into a separate machine like a DAT player or a hard disk recorder?
My advice for now, not really knowing exactly what the problem is, and assuming the timecode on your imported AVI files matches the timecode on your DV tapes is to do a batch capture of your sequence straight from the DV tapes, capturing using the DV NTSC 48 kHz Advanced (2:3:3:2) Pulldown Removal preset. This will at least ensure that your video is at the correct frame rate. Unfortunately it won't ensure that your audio will sync up.
Also, have you tried changing the speed of your mixed audio to either 99.9% or 100.1%? This will not be a complete fix because you still probably have some duplicated frames in your video, but it might put it back in sync.
And make sure you have a back up of your project and media before you do anything else.

Audio does not sync with videos

Sometimes when I download videos from iTunes, the audio and the video are not in sync. This has only started to happen since I upgraded to iTunes 7. Is there a way to fix this or is it a problem with the download process?

David, I'm monitoring the audio through the line out of my Mac Pro, using a small pair of powered computer speakers.
It's a system I've been using for years, and haven't had a problem w the audio waveform not matching the audio I hear, until now.
Thanks for your response!

Audio is not synced with video after Exporting QuickTime Movie

I have Canon DSLR footage shot 24p/1080p on the timeline. Timeline settings are the same as the Canon footage settings.
When I Export a QuickTime Movie, the audio is out of sync...
Can someone please help with this issue...
Thanks,

Don't tell me...you edited the files the camera shoots without converting, right? The camera shoots H.264...FCP doesn't like to work with H.264. The problem is that it SEEMS like it will work, but really is rife with issues when trying to work with it. You have encountered one...loss of sync.
The proper workflow is to convert the footage first...
#51 - Canon 5D MkII / Canon 7D footage into FCP
Shane's Stock Answer #51 - how do you bring in footage from the Canon 5D and 7D cameras into FCP to edit?
You need to convert all of the Canon 5D MkII footage from the H.264 format that it records, to ProRes 422 (ProRes HQ is unnecessary...no quality difference) Yes, the file sizes get drastically larger. H.264 is an acquisition and delivery format, not an editing one.
You can use the Canon EOS Log and Transfer plugin that works with the 1D, 5D and 7D cameras. This plugin is great because it brings in the camera's TIME OF DAY as timecode, instead of starting each clip at 00:00:00:00 like Compressor or other conversion software will do.
http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&fcategoryid=139&mo delid=17662#DownloadDetailAct
Here is a tutorial on how to use it:
http://provideocoalition.com/index.php/ssimmons/story/canon_releases_a_dslr_plug _in_for_final_cut_pros_log_and_transfer_tool/
And the workflow for tapeless ingest into FCP:
http://library.creativecow.net/ross_shane/tapeless-workflow_fcp-7/1
But for a quick fix...change your SEQUENCE SETTINGS to ProRes...render, and then export.

Audio does not sync with its own waveform.

Hi Everyone,
I captured an audio track from a DAT tape into FCP. No video yet, just audio.
I noticed the audio that I hear is 2 frames ahead of the corresponding wave form. Any ideas on how that could happen and how to correct it?
I can re-capture the DAT if needed.
Thanks!

David, I'm monitoring the audio through the line out of my Mac Pro, using a small pair of powered computer speakers.
It's a system I've been using for years, and haven't had a problem w the audio waveform not matching the audio I hear, until now.
Thanks for your response!

AE CS6 AUDIO NOT IN SYNC WITH VIDEO

for some reason my video in AE that i am rendering is not in sync audio wise however
i have the original file and the audio is fine. why is it that in AE the video is not in sync?
i previewed it many time in different scenes
however when the video hits about 2mins the video suddenly becomes off sync
even tho the original video i have isnt. Can anyone explain why?
oh and the frame rate in my video is 30 just incase if anyone asks
my specs
intel i3 3220 3.3ghz
8gb DDR3 ram
gtx 650 gpu

Ok my video is in an mp4 format i usally play my media files in vlc
and no i did not render the video as of yet nor did i use some kind of adobe media coder
its a raw film from me playing a video game in my videos folder
the audio is pefect when i play it in vlc however
for some reason when i play in AE the audio suddenly becomes off sync and the audio is ahead of the video
and this is my settings for compesition
http://gyazo.com/dd137136f7e774ff7981354937b35773
and my AE is up to date and i have windows 7 ultimate 64bit
ive rendered many videos already and this hasnt happened before so why is it happening all of a sudden?

Audio out of sync with optical out

Similar Messages

Maybe you are looking for