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Message 1 of 8

BT UHD Box with 1080p TV

Hi there.

 

I know that BT Sport UHD is broadcast at 50 full frames per second, so not 25fps interlaced at 50HZ, but actual 50fps 50hz, or 50p. Know I don't intend to get a 4K tv for a long time as there is next to no 4K content and I don't want all the HD content there is available to have to be scaled by either the box or the tv to fit the screen.

 

However, I am intersted in being able to watch the BT Sport UHD channel on just a 1080p tv, I know the box can scale it down and the image is still very very high quality. But my main question is this, will the UHD channel into my 1080p tv still be sent at 50p, or will the box downconvert it to 25p/50i? Pre HDMI 2.0 can support 1080/60p, so I can't see why therw would be much of an issue. But for me, just being able to view 1080/50p for the Sports channel would be worth the mothly fee.

 

Thanks in advance,

 

Nathan

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Re: BT UHD Box with 1080p TV


@Mallett94 wrote:

Hi there.

 

I know that BT Sport UHD is broadcast at 50 full frames per second, so not 25fps interlaced at 50HZ, but actual 50fps 50hz, or 50p. Know I don't intend to get a 4K tv for a long time as there is next to no 4K content and I don't want all the HD content there is available to have to be scaled by either the box or the tv to fit the screen.

 

However, I am intersted in being able to watch the BT Sport UHD channel on just a 1080p tv, I know the box can scale it down and the image is still very very high quality. But my main question is this, will the UHD channel into my 1080p tv still be sent at 50p, or will the box downconvert it to 25p/50i? Pre HDMI 2.0 can support 1080/60p, so I can't see why therw would be much of an issue. But for me, just being able to view 1080/50p for the Sports channel would be worth the mothly fee.

 

Thanks in advance,

 

Nathan


Hi

 

The output options for the Ultra HD box are as follows:

 

720p, 1080i, 1080p, UHD 50fps 8 bit, UHD 50fps 10bit

 

Which model TV do you have?

 

 

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Message 3 of 8

Re: BT UHD Box with 1080p TV

Just a normal Full HD TV. It would be connectd to either an LG 37LV550T, or an LG 42LB550V. Like I said, not 4K tv's, but I'd like to know if the box could output the downscaled UHD channel at its original full 50 fps progressive image.

Thanks
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Re: BT UHD Box with 1080p TV

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Re: BT UHD Box with 1080p TV

Thanks for that. My only issue with that is that the standard non-recording youview box we have at the moment is set to 1080p. And when connected to the TV, the info always shows 1080p 50HZ. but this becasue that is what nthe box is outputting.

I know that most HD channels are actually 1080i, except for some programs which get broadcast at 1080p, but even Sport isn't 1080p, it's 1080/50i i.e 25fps. I think it would have been better to broadcast at 720/50p like in america but thats another story haha.

What I'm getting at is has anyone actually shown or is there any proof that the UHD channel downscaled to 1080p keeps its full 50 fps frame rate?

Thanks
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Message 6 of 8

Re: BT UHD Box with 1080p TV

It's 50fps, UHD is not interlaced. By the way 1080i if 50 fields per second are de-interlaced correctly gives much better than 720p50 resolution in motion anyway. It does on Sky anyway.

 

BT TV would benifit from 720p only because of the low HD bitrates especially on the sport channels, it would be easier to hold detail at 720p rather than 1080i. 

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Message 7 of 8

Re: BT UHD Box with 1080p TV

I'm aware that the UHD channel is 4K progressive at 50fps. I just want to know if it keeps the 50fps progressive frame rate when dowmscaled to 1080p and fed to my normal full hd tv?

Thanks
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Message 8 of 8

Re: BT UHD Box with 1080p TV


@Mallett94 wrote:
I'm aware that the UHD channel is 4K progressive at 50fps. I just want to know if it keeps the 50fps progressive frame rate when dowmscaled to 1080p and fed to my normal full hd tv?

Thanks

Hi - you might be better asking on the avforums website - they have a Freeview & YouView forum - as nobody here seems to know.
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