A/V Sync

[Whicher1980]

Hi everyone.  Brand new to the forum today!

I've always used and been happy with Sony products and have just upgraded my system a couple of days ago.

I went for a KDL-55W905 Television, STR-DN1040 Receiver Amp and BDP-S5200 BluRay player.

As I work in broadcasting as an Editor I'm pretty knowleagble about picture and audio etc and have spent a day calibrating the TV so I'm happy with the picture using the Spears & Munsell setup disk.  Very happy so far!

Whilst calibrating the audio for the BluRay player I noticed quite a substantial sync mismatch between video and audio, which I thought was strange as I have the amp set to HDMI Auto for A/V sync.  I have manually adjusted this and it is 80ms out.  Seeing as I've gone for a complete Sony package I thought it rather odd that the sync would be so far out on the HDMI, but I've got it set up now so happy with that.

The big issue I have is with the sync on the Television.  The audio comes out of the receiver amp AFTER the video on the television.  This input is also set to HDMI Auto.  The trouble is, I need to delay the Video to bring it into line with the audio and I can't see a way to do this.  Even if I set the delay to 0ms manually, the audio still follows the video.  Looks to be about 2 frames out.  If I set the system to output audio through the TV and the Amp, you hear a noticable echo between the two when playing simultaniously.

Yesterday I went and bought a rather expensive optical cable to see if that would fix the issue rather than running the audio through the HDMI and selecting OPT as the input for the TV channel on the receiver.  Exactly the same problem.  I don't understand why the sync is not perfect when set to HDMI Auto.

Does anyone have any suggestions?  I have emailed Sony about the issue, but as yet have had no response.

Many thanks for your help and I look forward to hearing your comments!

James

[simonbruce1982]

Thanks for writing back.  My setup as follows:

Sony AF8 (HDMI 3 ARC) connected to DH790 via a new QED Premium Performance 1.5m HDMI cable.

I am experiencing the audio lagging slightly behind the picture when watching live television or when using one of the built in streaming apps such as YouTube or Netflix. As the picture is ahead of the audio, adding delay via the receiver is not an option. See settings used below.

Tried a TOSLINK optical cable between TV and DH790 and I am experiencing the exact same delay.

I also have Apple TV 4K, Blu-ray (Sony UBP-X700) and PlayStation 4 Pro connected to the DH790 directly. 
For each of these, I have to apply 80ms of delay in order to get perfect lip-sync.

This is a good solution for Apple TV and X700, but no so much for the PS4 as there is clearly a delay being added which affects game responsiveness. In addition, when playing a game where audio comes from the controller, it is out of sync with the same audio via the receiver, meaning what I am seeing and hearing is behind the input.

The above devices are all connected to the DH790 by QED "Pro Short Length HDMI" cables.

To validate lip-sync, I changed the TV to output to the TV speakers and then un-mute the receiver. This results in an echo being heard and allowed me to adjust delay for Apple TV and X700 to 80ms in order to sync correctly, but it's not possible to adjust to remove the delay from the TV over ARC in the same way (effectively needing negative delay of a similar amount of 80ms as the echo is about the same).

AF8 settings:

• A/V Sync set to Auto
• Audio output set to PCM (both advised by Sony)
• HDMI set to enhanced (to support 4K HDR, which works fine)
• TV set to Game mode when using PlayStation

PS4 settings:

• Audio outputting as PCM

Software up to date on all devices, I also did a full factory reset on the AF8 and the issue persists.

Looking online it seems lots of people have issues with delay over ARC, but struggling to find any answers relating to my exact setup. I hoped an all-Sony (with exception of the Apple TV) setup, with no expense spared on the TV would be hassle-free!

[Joe_Dohn]

Since both devices are capable of ARC, why not connect everything directly to the TV and monitor whether you still get the same delay or not?

If you would post your findings here, it would help others later on as well ^^

- J.D.

[simonbruce1982]

As mentioned, audio from the TV lags behind the image, which cannot be dialled out with AV delay, so everything going through the TV is not ideal. At least with Apple TV and X700 going through the receiver I can delay then by 80ms to get them to sync perfectly.

[Joe_Dohn]

Have you tried just connecting the PS4 directly then? Since it seems that's the main niggle you currently have with your setup.