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Possible problem with skyQ box or with UHD movies

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Camera Operator
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Re: Possible problem with skyQ box or with UHD movies


@thumbs83 wrote:

@Morgan+McDonnellI don't think any damage has been done to the TV's concerned by the Sky Q box.  The first thing I did when I noticed the issue was to try another HDMI device (Oppp 203) playing non HDR UHD content using the same picture settings and HDMI connection as Sky Q and no flickering was present.  


The differences btween the Sky version and the UHD blu-ray version would be that Sky uses rec.709 and 50Hz whereas the UHD version would use rec.2020 and be 25Hz.  So I wonder if the encode and/or decode on Sky UHD has changed.  Saying that I don’t get any flicker on my DX902 with v1 box.  

================================
Panasonic DX902 65”; Panasonic VT50 Plasma
Pioneer SC-LX901 11.2 Receiver, 7.2.4 setup
KEF 2xQ750, Q650C, 4xT101 surround, 4xCi160QR and Velodyne SPL1200 Ultra ; REL t7/i subwoofers
Apple TV 4K, Oppo 203 Ultra blu-ray player
Oracle
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Re: Possible problem with skyQ box or with UHD movies

Sky have very extensive test facilities with loads of combinations of boxes and TVs They also have a large number of video enigineers and specialists so it wouldnt have been a 5 minute test in an office but they could not replicate the fault as reported yesterday hence the request for video but I have issues with capturing flicker from a TV on video. If anyone can and uploads to You Tube or wherever that would help.

 

This does not mean they have dropped the issue simply a quick test did not find it which is not suprising as most issues are picked up during testing. Staff get used as testers on all releases and the latest firmware was released to a large customer sample (100s of thousands) several weeks before the role out last week with no reports of this issue as far as I know. Its new and therefore may take some effort to run to earth. Sky know exactly what changes the firmware made we dont so if it has broken something it is pretty deep. 

 

By the  way how does anyone seriously think a video signal could damage a TV  - that really threw me  - I would be very interested to hear the mechanism of how that could happen. Perhaps people are letting their imaginations work overtime?

==========================


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Re: Possible problem with skyQ box or with UHD movies

@Chrisee Many thanks for a further explanation regarding testing.

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Re: Possible problem with skyQ box or with UHD movies


@Morgan+McDonnell wrote:

@thumbs83 wrote:

@Morgan+McDonnellI don't think any damage has been done to the TV's concerned by the Sky Q box.  The first thing I did when I noticed the issue was to try another HDMI device (Oppp 203) playing non HDR UHD content using the same picture settings and HDMI connection as Sky Q and no flickering was present.  


@thumbs83   That's cool.  I actually don't have this issue..........................yet!   Just kicking ideas about wiff me bud's like innit  Smiley Happy


I'm happy you have no UHD issue with a V1 box. I have the same TV and a V1 box and that bodes well for me when I get home later this week.

Sky Q 2TB V1 -- LG 55UH850V UHD TV -- 1 Mini
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Re: Possible problem with skyQ box or with UHD movies


@Monojode wrote:

I've noticed this issue on my Sky Q box on LG B6. I've only noticed it on the UHD downloads.

 

Here is a video I made of the issue from IT paused:-

 


Is it possible that some people are more susceptible to the effect than others, like the shutter effect on active 3D glasses?

 

I only ask because to be honest I can't really see any obvious problems in that video. Of course it could be that the effect is hard to capture on video, or that it is simply nowhere near as apparent.  Not saying there isn't a problem - just that I can't really see it.

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Re: Possible problem with skyQ box or with UHD movies


@Chrisee wrote:

Sky have very extensive test facilities with loads of combinations of boxes and TVs They also have a large number of video enigineers and specialists so it wouldnt have been a 5 minute test in an office but they could not replicate the fault as reported yesterday hence the request for video but I have issues with capturing flicker from a TV on video. If anyone can and uploads to You Tube or wherever that would help.

 

This does not mean they have dropped the issue simply a quick test did not find it which is not suprising as most issues are picked up during testing. Staff get used as testers on all releases and the latest firmware was released to a large customer sample (100s of thousands) several weeks before the role out last week with no reports of this issue as far as I know. Its new and therefore may take some effort to run to earth. Sky know exactly what changes the firmware made we dont so if it has broken something it is pretty deep. 

 

By the  way how does anyone seriously think a video signal could damage a TV  - that really threw me  - I would be very interested to hear the mechanism of how that could happen. Perhaps people are letting their imaginations work overtime?


@Chrisee  Not letting my magination work overtime.  At least not in a bad or sinister manner.  I did qualify the concept by suggesting I have no real idea and was simply throwing ideas into the hat for discussion.  No more than that and, given that I most definitely do not possess the technical knowledge of the gifted ones on here, I had no intention of putting any noses out of joint!   So having explained that I don't possess such technological gift I am unable to to satisfy your desire to hear the mechanism of how that could happen.  Please accept my most humble apology.

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Re: Possible problem with skyQ box or with UHD movies


@Pacco65 wrote:

@Monojode wrote:

I've noticed this issue on my Sky Q box on LG B6. I've only noticed it on the UHD downloads.

 

Here is a video I made of the issue from IT paused:-

 


Is it possible that some people are more susceptible to the effect than others, like the shutter effect on active 3D glasses?

 

I only ask because to be honest I can't really see any obvious problems in that video. Of course it could be that the effect is hard to capture on video, or that it is simply nowhere near as apparent.  Not saying there isn't a problem - just that I can't really see it.


Hi @Pacco65 It’s there for me 😉but is much more apparent “live”. I did a video this morning on iPad and you are right it is hard to capture the full effects using said device 😔. Regards.

Researcher
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Re: Possible problem with skyQ box or with UHD movies


@Pacco65 wrote:

Is it possible that some people are more susceptible to the effect than others, like the shutter effect on active 3D glasses?

 

I only ask because to be honest I can't really see any obvious problems in that video. Of course it could be that the effect is hard to capture on video, or that it is simply nowhere near as apparent.  Not saying there isn't a problem - just that I can't really see it.


Maybe, as it is noticeable to me in the video.

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Re: Possible problem with skyQ box or with UHD movies


@Monojode wrote:

@Pacco65 wrote:

Is it possible that some people are more susceptible to the effect than others, like the shutter effect on active 3D glasses?

 

I only ask because to be honest I can't really see any obvious problems in that video. Of course it could be that the effect is hard to capture on video, or that it is simply nowhere near as apparent.  Not saying there isn't a problem - just that I can't really see it.


Maybe, as it is noticeable to me in the video.


Yep, that’s exactly what I see on my TV.

Of course it’s more obvious on a TV with no camera and upload artefacts, but you’ve captured it.

As I expected, my awful iPad camera hides it beneath the grain.

Well done. Big thumbs up from me.

Camera Operator
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Re: Possible problem with skyQ box or with UHD movies

I can see it in that video.  It more like a pulsing of the brightness.  It looks like the effects you could get from the old copy protection methods.  Don’t know if HDCP could be an issue for certain sets? 

================================
Panasonic DX902 65”; Panasonic VT50 Plasma
Pioneer SC-LX901 11.2 Receiver, 7.2.4 setup
KEF 2xQ750, Q650C, 4xT101 surround, 4xCi160QR and Velodyne SPL1200 Ultra ; REL t7/i subwoofers
Apple TV 4K, Oppo 203 Ultra blu-ray player
Camera Operator
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Re: Possible problem with skyQ box or with UHD movies


@trevforum wrote:

I can see it in that video.  It more like a pulsing of the brightness.  It looks like the effects you could get from the old copy protection methods.  Don’t know if HDCP could be an issue for certain sets? 


Hi @trevforum highly unlikely I would have thought that multiple users using different TVs of different ages with different panel technologies would all get an HDCP issue at the same time.🤔

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Re: Possible problem with skyQ box or with UHD movies

If it was a HDCP issue wouldn’t it be apparent on all content?

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Re: Possible problem with skyQ box or with UHD movies


@trevforum wrote:

 It more like a pulsing of the brightness. 


Ah - now that I could see in the video. I was looking for something much more apparent as that kind of thing is often an artefact of trying to video or take a picture of a screen anyway. I'm sure it would be much more apparent "in the flesh" so to speak Smiley Happy

Camera Operator
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Re: Possible problem with skyQ box or with UHD movies


@Pacco65 wrote:

@trevforum wrote:

 It more like a pulsing of the brightness. 


Ah - now that I could see in the video. I was looking for something much more apparent as that kind of thing is often an artefact of trying to video or take a picture of a screen anyway. I'm sure it would be much more apparent "in the flesh" so to speak Smiley Happy


@Pacco65 Absolutely..and maybe it is also more apparent on different panel technologies than others, for example OLED TVs with better contrast between dark and light over many LCD/LED panels🤔

Executive Producer
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Re: Possible problem with skyQ box or with UHD movies

Hopefully by the time there is much UHD content it will be cured, at the moment there is just not enough content for me to worry about it.

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