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UPC digital

  • 08-02-2008 5:18pm
    #1
    Ranicand
    Closed Accounts Posts: 1,960 ✭✭✭


    Ok NTL are gone and this new owner is only really at the start of things.

    I don't know much about UPC but I know it is a big company.

    My question is can it ever match Sky or even beat it in terms of service and qualty?

    Sky while ahead is far from perfect bits rates have gone down and the guide now looks outdated.

    If another provider could deliver a better picture they could be onto a winner,

    Many of us have lager screens now and poor bit rates and poor sound don't do much for movie fans even on a HD service.

    I have just started to enjoy Blu Ray movies and if any provider could deliver this standard of pictute I would sign up wether that be Sky UPC or another company.


Comments

  • #2
    Mossy Monk
    Closed Accounts Posts: 28,128 ✭✭✭✭Mossy Monk


    You will be a long time waiting for broadcast television to go to 1080p.


  • #3
    watty
    Registered Users, Registered Users 2 Posts: 32,417 ✭✭✭✭watty


    Never...
    NTSC 30fps interlaced has a problem with 24fps. Hence 1440x 720p which is same bandwidth as 1920x1080i

    1920x1080p needs TWICE the bandwidth. Contrary to what most people think it is NO extra vertical or horizontal resolution.

    "p" is twice the Temporal resolution, but only for horizontal detail 1 pixel high. PC desktops and computer games use LOTS of sharp 1 pixel high detail and are used up close. So Games and PCs use "p". There is no Radio Transmission so x2 bandwidth is not an issue.

    For 25fps ordinary TV or converted 24fps Film the extra temporal detail does not exist! So no advantage to 50p mode compared with 25i mode AT ALL. There really isn't.

    The WHOLE "progressive" vs "interlaced" is purely a USA/JAPAN issue because of artifacts produced by the Telecine 3:2 pull down to convert 24p to 30i. Using 60p gives no real extra resolution, but has no artifacts.

    There are NO 24fps film to 25i PAL conversion artifacts.

    Broadcast is unlikely to be ever 1920x1080 @50p in Europe.

    Inhernetly from Film content is 24p. In the USA it makes sense to play BluRay at 24p or 60p rather than 30i. In Europe you can play at 24p (if your TV does it) and the SOUND will be wrong as Europe/Australia content has the sound fixed for 25fps playback. Or play at 25i or 50p. Since the 50p is 24p frames repeated twice, there is no real extra resolution compared to 25i playback. TV or DVD or BD conversion to 50p will reduce flicker, BUT ONLY on large single pixel high horizontal sharp edges/detail (only badly done captions).


  • #4
    Ranicand
    Closed Accounts Posts: 1,960 ✭✭✭Ranicand


    watty wrote: »
    Never...
    NTSC 30fps interlaced has a problem with 24fps. Hence 1440x 720p which is same bandwidth as 1920x1080i

    1920x1080p needs TWICE the bandwidth. Contrary to what most people think it is NO extra vertical or horizontal resolution.

    "p" is twice the Temporal resolution, but only for horizontal detail 1 pixel high. PC desktops and computer games use LOTS of sharp 1 pixel high detail and are used up close. So Games and PCs use "p". There is no Radio Transmission so x2 bandwidth is not an issue.

    For 25fps ordinary TV or converted 24fps Film the extra temporal detail does not exist! So no advantage to 50p mode compared with 25i mode AT ALL. There really isn't.

    The WHOLE "progressive" vs "interlaced" is purely a USA/JAPAN issue because of artifacts produced by the Telecine 3:2 pull down to convert 24p to 30i. Using 60p gives no real extra resolution, but has no artifacts.

    There are NO 24fps film to 25i PAL conversion artifacts.

    Broadcast is unlikely to be ever 1920x1080 @50p in Europe.

    Inhernetly from Film content is 24p. In the USA it makes sense to play BluRay at 24p or 60p rather than 30i. In Europe you can play at 24p (if your TV does it) and the SOUND will be wrong as Europe/Australia content has the sound fixed for 25fps playback. Or play at 25i or 50p. Since the 50p is 24p frames repeated twice, there is no real extra resolution compared to 25i playback. TV or DVD or BD conversion to 50p will reduce flicker, BUT ONLY on large single pixel high horizontal sharp edges/detail (only badly done captions).

    A very good answer thanks.

    The picture on UPC and Sky suffers badly from low bit rates I think we can all agree.


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