topic Re: Picture issue - Judder Reduction in Sky Stream

Picture issue - Judder Reduction

David164 — Sat, 20 Apr 2024 10:39:05 GMT

Hi, I'm currently on sky stream and ever since we've bought a new TCL tv (Before we had LG) when i'm watching general tv programs i am occassionally experiencing like a ghostly/Jerky effect on people when they are moving on the screen i have been playing around with the Judder Reduction and Motion Clarity on my tv but can't seem to get it right. Could this be something to do with my tv itself or a faulty sky box ? and any suggestions please on how i can get the image to appear stable.

Currently have Judder Reduction on 10 and Motion Clarity ON

Re: Picture issue - Judder Reduction

Padam_Padam — Sat, 20 Apr 2024 10:46:18 GMT

@David164

Personally I'd always recommend turning all such motion processing settings off on your TV. They can often cause issues like ghosting and artefacting when not implemented well.
The Sky Stream puck has a judder reduction setting for the third party apps which switches the output from 50hz to 60hz. This helps content shot at frame rates other than the standard UK 25fps to look less jerky.

Re: Picture issue - Judder Reduction

David164 — Sat, 20 Apr 2024 11:31:38 GMT

Thanks for your advice much appreciated will have to experiement and try this out.

Re: Picture issue - Judder Reduction

David164 — Sat, 20 Apr 2024 12:46:54 GMT

Turned Judder Reduction and Motion Clarity all off on my tv itself. How do i find the Judder Reduction app for third party apps on my tv so i can change the output from 50hz to 60hz can't seem to find it ? There is a Judder Reduction setting under picture in settings but my only options are on or off ?

Re: Picture issue - Judder Reduction

lettice — Sat, 20 Apr 2024 13:39:51 GMT

@David164 wrote:
There is a Judder Reduction setting under picture in settings but my only options are on or off ?

On your puck.

Go to settings > Picture> Judder reduction for TV apps

Turn it ON.

Re: Picture issue - Judder Reduction

lettice — Sat, 20 Apr 2024 13:38:58 GMT

Also, just doing a quick Google for tcl TVs

If your tv has it under its picture and/or advanced settings, turn off Action Smoothing.

Re: Picture issue - Judder Reduction

Padam_Padam — Sat, 20 Apr 2024 13:45:13 GMT

@David164 wrote:
Turned Judder Reduction and Motion Clarity all off on my tv itself. How do i find the Judder Reduction app for third party apps on my tv so i can change the output from 50hz to 60hz can't seem to find it ? There is a Judder Reduction setting under picture in settings but my only options are on or off ?

That is your only option on the Stream puck. Judder reduction on switches the output to 60hz for all third party apps. Judder reduction off keeps the output at 50hz. BBC iPlayer will automatically switch to 50hz even if you have judder reduction on because all BBC output is 50hz.

Re: Picture issue - Judder Reduction

David164 — Sat, 20 Apr 2024 14:28:05 GMT

Already has this setting switched to ON, Thanks.

Re: Picture issue - Judder Reduction

David164 — Sat, 20 Apr 2024 14:29:07 GMT

Only options on my TCL tv i have under the MOTION tab is Motion Clarity (ON/OFF) or Judder Reduction (0-10)

Re: Picture issue - Judder Reduction

David164 — Sat, 20 Apr 2024 14:32:04 GMT

Yeah well my Judder Reduction on sky settings was already ON as present but i still noticed the Juddering yesterday when watching something on BBC I Player through apps on sky stream. Not sure what the best suggestion is for me really because i have tried and experiemented with different settings on both sky stream and on my tv but can't get thing right. Could the resolution have something to do with it ?

Re: Picture issue - Judder Reduction

Padam_Padam — Sat, 20 Apr 2024 15:05:02 GMT

@David164 wrote:
Yeah well my Judder Reduction on sky settings was already ON as present but i still noticed the Juddering yesterday when watching something on BBC I Player through apps on sky stream. Not sure what the best suggestion is for me really because i have tried and experiemented with different settings on both sky stream and on my tv but can't get thing right. Could the resolution have something to do with it ?

Resolution shouldn't really affect it. If you don't pay extra for UHD/Atmos on your Stream puck then set the video output to 1080i, this is the native HD output and will allow your TV to upscale to 4K (assuming it's a 4K TV) which can often produce a slightly sharper image overall.
Other than that just make sure you have all other picture processing options turned off on the TV's settings.
One other thing to try is a comparison with the TV's own built in apps (assuming it has them.) Try watching a bit of the same show on iPlayer using the TV app and see if it judders in the same way. Are the picture settings the same for both the TV apps and the HDMI input for your Stream puck?

Re: Picture issue - Judder Reduction

David164 — Sat, 20 Apr 2024 15:16:52 GMT

Okay i've set picture resolution to 1080i

All picture settings on the tv itself turned off including dynamic contast , dynamic colour , digital noise redution , Gradation Clear etc

And yes it still judders in the same way watched an episode of the same program on i player (It could be an issue with that specific program possibly ?)

what do you mean by are the picture settings the same on both the stream puck and TV Apps ?

Re: Picture issue - Judder Reduction

Padam_Padam — Sat, 20 Apr 2024 15:30:40 GMT

@David164 wrote:
Okay i've set picture resolution to 1080i
All picture settings on the tv itself turned off including dynamic contast , dynamic colour , digital noise redution , Gradation Clear etc
And yes it still judders in the same way watched an episode of the same program on i player (It could be an issue with that specific program possibly ?)
what do you mean by are the picture settings the same on both the stream puck and TV Apps ?

Many TV's will have different default picture settings for each HDMI input and for the internal tuner and apps. You can sometimes copy the settings between inputs (I don't know if TCL allow this) or you can set them for each input and leave them. You may also have to tweak the settings for different types of content BBC iPlayer for example has some UHD HDR content which uses the HLG format of HDR. You will likely need to tweak the settings for such content to look as good as possible.

Re: Picture issue - Judder Reduction

David164 — Sat, 20 Apr 2024 15:45:37 GMT

Oh i see yeah not sure they do allow it as far as i know, Will see how it goes while watching live tv tonight because i seem to notice it more while using apps such as BBC i player compared to content on normal tv. You might be right though i might look into I player settings to see if i can adjust anything there

I will let you know probably tomorrow how things are looking

Anyway i've switched all motion clarity and Judder Reduction off on the tv itself like you said so hopefully i'll notice a difference.

when watching stuff on apps though like BBC iplayer i'm still experiencing juddering though.

Re: Picture issue - Judder Reduction

David164 — Sun, 21 Apr 2024 09:29:39 GMT

I watched programs last night and experienced little change i am still experiencing this juddering effect. I don't know whether you know anything about this but sometimes when i change settings on my tv itself it comes up with a message stating that if i change a certain picture setting it could mess with my energy efficiency ? could this be something connected to what i am talking about ? when i watch shows the tv doesn't freeze or anything it's just throughout the show when people are moving across the screen you get this judder/jerky effect as they are moving it's not normal

Re: Picture issue - Judder Reduction

Padam_Padam — Sun, 21 Apr 2024 09:41:32 GMT

@David164

Most modern smart TV's will mention energy efficiency - it's nothing to worry about and won't affect judder/motion. If you turn energy efficient settings on then it usually means it dims the backlight a little, therefore using a tad less energy. But we're talking a couple of pennies worth a year. For best picture quality it's usually better to keep such settings off.
What is the model number of your TV?

Re: Picture issue - Judder Reduction

David164 — Sun, 21 Apr 2024 10:04:58 GMT

Ah okay thanks

Model Number is : 50C645k

Re: Picture issue - Judder Reduction

lettice — Sun, 21 Apr 2024 10:34:22 GMT

Looking at the review of your model on AV forums, it does not pick out much other than turning off the motion setting.

But, it might be worth try swapping over your puck on hdmi port 1 and 2 depending on how you have your Sky puck connected, as they are slightly different.

It should not really make such a difference, but you never know.

It will be wise to power recycle the TV and puck after swapping over the hdmi.

Re: Picture issue - Judder Reduction

David164 — Sun, 21 Apr 2024 10:59:05 GMT

Just done this. changed the ports over. I've tried changing from HDMI 2 to HDMI 3, see how this goes

If i power recycled the puck and tv wouldn't this reset everything back to default ?

Re: Picture issue - Judder Reduction

Padam_Padam — Sun, 21 Apr 2024 11:16:49 GMT

@David164

Power cycling the TV and the puck won't wipe the settings back to default. You need to actively choose to factory reset them via the menus to do that. A regular power cycle is actively encouraged with Sky Stream as it seems to iron out many of the glitches which can happen, due to it being a server-based platform.

Other than what you've already done it seems difficult to suggest much else. Your particular model is at the cheaper end of the spectrum, and whilst the reviews don't mention anything wrong with how it handles motion, it may be that your previous LG TV just handled it better and you need some time to adjust.

It's worthwhile trying various sources - ie the built-in tuner, built-in apps and external sources like your Stream puck and any other streaming devices you have to see if they all exhibit the juddering you're experiencing. If this is the case then it may be worth contacting whoever you bought the TV from in case it's a faulty panel.