----- HDTV Magazine Tips List -----
Rodolfo,
Many thanks for your in-depth answer to my query. Nothing is as simple as
it appears. I am looking forward to seeing that new Pioneer.
Regards,
Hugh
----- Original Message -----
From: "Rodolfo La Maestra - HDTV Magazine" <
[email protected]>
To: "HDTV Magazine" <
[email protected]>
Sent: Monday, July 17, 2006 1:19 AM
Subject: Re: Article on the future of BlueRay
> ----- HDTV Magazine Tips List -----
>
> Hugh,
>
> No. It is not correctly stated because it was incomplete, and not stating
> the complete depth of the
> subject might have been intentional against Blu-ray capabilities of 1080p
> output, just to say it
> nicely.
>
> A 24fps film source (film stored in Hi Def DVD, or DVD as well, regardless
> of the resolution) would
> have to go thru a process of conversion to 60i (and a conversion to
> doubling up to 60p on the 1080p
> output players) in order to match what most 60i or 60p TVs would expect
> from its 1080i or 1080p
> input.
>
> The processing is called 3-2 (or 2-3) pulldown, whereby sufficient fields
> are added to the 24fps
> film frames (after those frames are split into 48 fields) to match the
> video speed of the required
> 60i or 60p, those added fields are not perfectly fitted to the original
> material, is an art of the
> electronics, and we know there are quite a few quality shortcuts games
> played out there, not
> everyone is a Faroudja, the final sequence does not end up as clean as
> doubling up the 24 frames to
> multiples of it, as 48, 72, 120fps, avoiding the 60i and 60p conversions
> FOR FILM SOURCES.
>
> If a player can output 24fps to a TV that is able to accept 24fps and
> display the progressive
> cadence doubled as 48fps (Optoma 81 FP is one), or 120 fps (Brillian RPTV
> is another that is
> technically capable and I requested them to do so, as an strategic edge),
> or 72fps as the Elite
> plasmas 3:3 cadence, it would be a better fit. Why? There will be no
> conversion to field cadence,
> no field processing, no motion adaptation at the filed level, no added
> fields in between the clean
> 24fps film sequence. And we did not get to the TV inputs yet, wait until
> we get there for another
> can of secrets (worms in some cases).
>
> We know that whenever conversions take place there is an impact to the
> quality of the original
> signal, we know that when add (force) fields there is an impact to the
> smoothness when the image is
> displayed, we know that feeding the resultant 1080i to a TV that bobs an
> already compromised image
> produces a further reduction in the perceived resolution, and even if the
> TV is not bobbing it would
> show a compromise when doubling up to 60p from a 60i signal that has added
> fields that were not
> present in the original 24fps cadence.
>
> If one is viewing this mixed bag of effects on a small display it might be
> difficult to notice the
> difference, to the untrained eye. But HD Home theater is moving at
> accelerated pace into a 50" and
> higher for regular rooms now, not to mention people switching to
> projectors because of the beauty of
> 1080p. Images are displayed larger and larger, content and video
> processing must be done well or it
> will show.
>
> In other words, if there is way to output film (or digital movie) sources
> at the same 24fps they
> were stored, and if there is way to accept and double those progressive
> frames without going to an
> interlaced cadence of fields the image in theory "should" be much cleaner.
> I hope it is easy to
> understand why.
>
> There is a bunch of good projectors out there that can do that, Hi Def DVD
> would be perfect for
> large images displayed at 1080p all in the p domain at frame rates
> multiples of 24 "for film
> content" and also for new digital movie makers using 24fps, such as Lucas
> and the others.
>
> At the moment such scenario is for a relatively small market of hi-end
> home theaters, but the group
> of 1080p sets with 1080p inputs is gradually growing on panels and RPTVs,
> and the prospect of
> handling different p frame rates to maintain a progressive cadence thru
> the chain should be next in
> the search for perfection. What is happening to those projectors would
> soon become contagious to
> the non-projector market, if they are actually pursuing the next step of
> quality.
>
> This might not have been explained well in the article perhaps because it
> might have been intended
> for certain audience, an audience hungry of looking for a bias favoring HD
> DVD, although in his
> defense I must say that in many areas the article was factually accurate,
> but a reader that knows
> the technical depth of this subject would have been able to isolate the
> facts from the way they were
> expressed, the article might motivate many to rush into buying now and not
> even wait for the second
> generation of HD DVD expected to be with 1080p outputs, or for the
> consumers not to demand 24fps
> outputs on 1080p players, any players, which by the way, is the feature
> expected on the Pioneer
> Elite player soon to be out, and their plasmas tripling at 72 those 24 as
> well, they know the
> business of quality, it is not cheap but exists.
>
>
> Best Regards,
>
> Rodolfo La Maestra
>
> -----Original Message-----
> From: HDTV Magazine On Behalf Of
> Hugh Campbell
> Sent: Sunday, July 16, 2006 6:14 PM
> To: HDTV Magazine
> Subject: Re: Article on the future of BlueRay
>
>
> ----- HDTV Magazine Tips List -----
>
> Thanks for the link. I just got around to reading this article and am
> wondering about the validity of a paragraph which I am quoting below. I
> thought one reason for waiting until a television would "accept" 1080P was
> because high def. players would be outputting 1080P. If this author is
> correct, and I am reading it correctly, it apparently does not make any
> difference since 1080i and 1080p will look the same on a 1080p television.
> Any comments would be appreciated.
>
> "The truth is this: The Toshiba HD-DVD player outputs 1080i, and the
> Samsung
> Blu-ray player outputs both 1080i and 1080p. What they fail to mention is
> that it makes absolutely no difference which transmission format you
> use-feeding 1080i or 1080p into your projector or HDTV will give you the
> exact same picture. Why? Both disc formats encode film material in
> progressive scan 1080p at 24 frames per second. It does not matter whether
> you output this data in 1080i or 1080p since all 1080 lines of information
> on the disc are fed into your video display either way. The only
> difference
> is the order in which they are transmitted. If they are fed in progressive
> order (1080p), the video display will process them in that order. If they
> are fed in interlaced format (1080i), the video display simply reassembles
> them into their original progressive scan order. Either way all 1080 lines
> per frame that are on the disc make it into the projector or TV. The fact
> is, if you happen to have the Samsung Blu-ray player and a video display
> that takes both 1080i and 1080p, you can switch the player back and forth
> between 1080i and 1080p output and see absolutely no difference in the
> picture. So this notion that the Blu-ray player is worth more money due to
> 1080p output is nonsense."
>
> Hugh
>
>
>
> ----- Original Message -----
> From: "Brent Yates" <
[email protected]>
> To: "HDTV Magazine" <
[email protected]>
> Sent: Friday, July 14, 2006 7:18 PM
> Subject: Article on the future of BlueRay
>
>
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