Register FAQ / Rules Forum Spy Search Today's Posts Mark Forums Read
Go Back   MacRumors Forums > Apple Hardware > Apple TV and Home Theater

Reply
 
Thread Tools Search this Thread Display Modes
Old Apr 2, 2012, 09:24 PM   #1
Andy0568
macrumors member
 
Join Date: Sep 2010
Wirelessly posted

I have a Denon receiver connected to a Samsung unc46c6400 LED Television via HDMI and the audio is noticeably behind the picture on my Apple TV. The audio coming straight out of the TV was in sync before connecting the receiver. This problem is driving me bonkers and I'd sure appreciate some help
Andy0568 is offline   0 Reply With Quote
Old Apr 3, 2012, 12:40 AM   #2
GilesM
macrumors 6502
 
Join Date: Oct 2008
Hi, I also have a Denon amp and a Samsung LED TV and the audio sync between the two has been driving me nuts as well.
The only thing I found to fix it was to adjust the audio delay on the Amplifier to roughly 26-27 miliseconds for all incoming sources.

This issue exists with al my devices, Apple tV3, Cable Box, PS3 for Blu-ray.
Adjust the audio delay on the AMP to around 26 ms individually for each source (they will ot all be the same)....

This is because the Samsung TV's do so much work on the picture, it puts the sound out of sync.

Good luck!

Last edited by GilesM; Apr 3, 2012 at 01:32 AM.
GilesM is offline   0 Reply With Quote
Old Apr 3, 2012, 12:42 AM   #3
blueroom
macrumors 603
 
blueroom's Avatar
 
Join Date: Feb 2009
Location: Toronto, Canada
Put the TV in game mode and or 60Hz.
__________________
My iOS devices are not jailbroken.
Bill
My Blog
blueroom is online now   0 Reply With Quote
Old Apr 3, 2012, 01:33 AM   #4
GilesM
macrumors 6502
 
Join Date: Oct 2008
blueroom... interesting idea.. I might try the 60 hz thing as well....
GilesM is offline   0 Reply With Quote
Old Apr 3, 2012, 01:34 AM   #5
Macman45
macrumors G5
 
Macman45's Avatar
 
Join Date: Jul 2011
Location: Somewhere Back In The Long Ago
Most DTS systems have an option to set a delay, that's how I fixed mine...It also depends on the length of cables...Shorter is best.
__________________
..That's All Folks
Macman45 is offline   0 Reply With Quote
Old Apr 3, 2012, 02:53 AM   #6
steve-p
macrumors 68000
 
Join Date: Oct 2008
Location: Newbury, UK
Modern TVs and AVRs also have Auto Lip Sync option, although I can't say it's worked for me with any source.
steve-p is offline   0 Reply With Quote
Old Apr 3, 2012, 01:41 PM   #7
Andrew07
macrumors 6502
 
Join Date: Apr 2007
I'm using a very short HDMI cable. Switching to game mode/60hz did not fix the problem. I've tried adjusting the audio delay but that too does not work. This may be a stupid question, but since the audio is already delayed after the picture, don't I want to speed it up instead of delaying it further?

GilesM, have you tried using the optical out on your television?
Andrew07 is offline   0 Reply With Quote
Old Apr 3, 2012, 02:04 PM   #8
gpiney
macrumors newbie
 
Join Date: Dec 2010
Quote:
Originally Posted by Andy0568 View Post
Wirelessly posted

I have a Denon receiver connected to a Samsung unc46c6400 LED Television via HDMI and the audio is noticeably behind the picture on my Apple TV. The audio coming straight out of the TV was in sync before connecting the receiver. This problem is driving me bonkers and I'd sure appreciate some help
How exactly do you have everything hooked up? You should be have you ATV hooked up to your Denon via HDMI input. TV should be hooked up to HDMI output. There should be no delay. I have Cable, ATV, BluRay player all hooked up this way and have Zero delay.
One thing. Make sure your Audio Decoder on the receiver is set to Auto.
__________________
Greg,

27" iMac i5, 64gb iPad1 3G, iPhone 4S ATV3, ATV2.
gpiney is offline   0 Reply With Quote
Old Apr 3, 2012, 02:23 PM   #9
Andrew07
macrumors 6502
 
Join Date: Apr 2007
Quote:
Originally Posted by gpiney View Post
How exactly do you have everything hooked up? You should be have you ATV hooked up to your Denon via HDMI input. TV should be hooked up to HDMI output. There should be no delay. I have Cable, ATV, BluRay player all hooked up this way and have Zero delay.
One thing. Make sure your Audio Decoder on the receiver is set to Auto.
The Denon receiver's HDMI OUT is going to the Samsung's HDMI IN
Each of my other components (Sony BluRay, AppleTV, Xbox360) are going into the HDMI INs on the Denon

Before getting the Denon receiver, I had a Sony surround sound system connected to the "Audio Out" jack on the Samsung and it did not have any audio delay

Last edited by Andrew07; Apr 3, 2012 at 03:32 PM.
Andrew07 is offline   0 Reply With Quote
Old Apr 4, 2012, 09:54 AM   #10
marzer
macrumors 65816
 
marzer's Avatar
 
Join Date: Nov 2009
Location: Colorado
What happens if you connect the ATV straight to the TV? And connect the TV optical out to the receiver (or even try optical out from the ATV to the receiver)? Do you still get a delay? Of course you'll want to disable the TV speakers if not done so already.
marzer is offline   0 Reply With Quote
Old Apr 4, 2012, 10:26 AM   #11
alFR
macrumors 68000
 
Join Date: Aug 2006
Quote:
Originally Posted by Macman45 View Post
Most DTS systems have an option to set a delay, that's how I fixed mine...It also depends on the length of cables...Shorter is best.
Considering electrical current flows at the speed of light you'd need a bloody long cable for that to make any appreciable difference...
alFR is offline   0 Reply With Quote
Old Apr 4, 2012, 11:32 AM   #12
dougeb
macrumors newbie
 
Join Date: Mar 2010
Location: Pleasant Hill, CA
Quote:
Originally Posted by Andrew07 View Post
I'm using a very short HDMI cable. Switching to game mode/60hz did not fix the problem. I've tried adjusting the audio delay but that too does not work. This may be a stupid question, but since the audio is already delayed after the picture, don't I want to speed it up instead of delaying it further?

GilesM, have you tried using the optical out on your television?
I agree here. The sound is ahead of the picture. Problem is Video delay.

I have same problem occasionally with u-Verse Box.
My older Sony Bravia LCD does not have a Audio Delay, so I have to live with it until I can get Equipment that can sync Audio & Video.
__________________
Doug: 2010 MBP i7 17",refurb 24" ACD, 2009 iMac 24", iPhone 3GS, Airport Extreme, Airport Express
dougeb is offline   0 Reply With Quote
Old Apr 4, 2012, 06:40 PM   #13
Andrew07
macrumors 6502
 
Join Date: Apr 2007
Quote:
Originally Posted by marzer View Post
What happens if you connect the ATV straight to the TV? And connect the TV optical out to the receiver (or even try optical out from the ATV to the receiver)? Do you still get a delay? Of course you'll want to disable the TV speakers if not done so already.
It's an even more noticeable delay set up this way
Andrew07 is offline   0 Reply With Quote
Old Apr 4, 2012, 07:12 PM   #14
marzer
macrumors 65816
 
marzer's Avatar
 
Join Date: Nov 2009
Location: Colorado
Quote:
Originally Posted by Andrew07 View Post
It's an even more noticeable delay set up this way
Ugh, sorry to hear. It was worth a shot, that's how I've got mine hooked up to my Yamaha, no delay.
marzer is offline   0 Reply With Quote
Old Apr 7, 2012, 11:42 AM   #15
Andrew07
macrumors 6502
 
Join Date: Apr 2007
bump. sorry, still haven't figured it out. no response on the AVS forum and no response from Samsung
Andrew07 is offline   0 Reply With Quote
Old Apr 7, 2012, 12:19 PM   #16
mic j
macrumors 68000
 
Join Date: Mar 2012
Quote:
Originally Posted by GilesM View Post
Hi, I also have a Denon amp and a Samsung LED TV and the audio sync between the two has been driving me nuts as well.
The only thing I found to fix it was to adjust the audio delay on the Amplifier to roughly 26-27 miliseconds for all incoming sources.

This issue exists with al my devices, Apple tV3, Cable Box, PS3 for Blu-ray.
Adjust the audio delay on the AMP to around 26 ms individually for each source (they will ot all be the same)....

This is because the Samsung TV's do so much work on the picture, it puts the sound out of sync.

Good luck!
I used to have a Samsung DLP and had the same sync issue. I have since moved to a Mits DLP and the sync problem is gone. I agree with your assessment of the Samsung slowly processing the video stream. That was the current thought on the AVS Forum at the time too.
__________________
17" MBP '09, 2.66 GHz, 8GB RAM; 13" MBP (Retina) '12, 2.5GHz, 8GB RAM; iPad 2, 32GB; AE; TV 3; AEBS w 1TB Seagate HDD; 65" Mits DLP, Sony STR-DB1070 AVR
mic j is offline   0 Reply With Quote
Old Apr 7, 2012, 12:24 PM   #17
blueroom
macrumors 603
 
blueroom's Avatar
 
Join Date: Feb 2009
Location: Toronto, Canada
Another option is to check for firmware updates for the TV in question. Samsung has them.
__________________
My iOS devices are not jailbroken.
Bill
My Blog
blueroom is online now   0 Reply With Quote
Old Aug 29, 2012, 08:05 AM   #18
GilesM
macrumors 6502
 
Join Date: Oct 2008
finally - i fixed the issue on my ste

So,

after much fiddling, i set my amp to delay the sound for 100 (milliseconds) for blu-ray sources and now it is just fine.
For TV (which is fed from the TV via an optical cable) the audio delay is set to 0.
I had this set previously to a delay of 28-31 ms, but this has been bothering me for months (as you can see) today I finally tries a setting of 100 ms and this works for me.

it may or may not be the right setting for you, but give it a go.
GilesM is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Hardware > Apple TV and Home Theater

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
Audio delay from rMBP Geckotek Digital Audio 2 Nov 10, 2013 02:37 AM
Samsung's Request to Delay Investigation of Apple-Nokia Patent License Leaks Denied MacRumors iOS Blog Discussion 75 Oct 18, 2013 11:58 AM
Multi-Output Audio Delay anchorstarj Mac Basics and Help 0 Aug 30, 2013 10:22 AM
Audio playback delay problem on MP Raytrace OS X 10.8 Mountain Lion 2 Dec 14, 2012 11:48 PM
Apple Earns Delay on Publishing Notices Acknowledging Samsung Did Not Copy iPad MacRumors iOS Blog Discussion 61 Aug 6, 2012 01:09 PM

Forum Jump

All times are GMT -5. The time now is 10:17 PM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC