[opendtv] Re: Olympics HDTV
- From: Olivier Houot <olho_avatar_i@xxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Sat, 04 Feb 2006 01:25:29 +0100
Considering the capability of some commercial TV sets using motion
compensated frame-rate upconversion to give a video look to
film-originated material , getting from 24p to 75i or 100i(DVD), it
would be surprising that a proper conversion could not achieve the 60 Hz
look based on 50 Hz input. And what about a comparison between true 60
Hz and 100 hz created from 50 Hz capture? If you can achieve the same
look while shooting in 50 Hz you can use less bandwidth or more
reasonable compression ratios. Or is it really impossible to get the
showscan look without true 60 Hz capture?
> From: "Stephen W. Long" <longsw@xxxxxxxxxxxxxx>
> Subject: [opendtv] Re: Olympics HDTV
>
> It is the TEMPORAL rate of film that adds the majority of the film
> look.
> When you take the Panasonic variable rate progressive camera and crank
> it
> down to 24 Hz, it suddenly looks like "film." Pixel counts the same,
> only
> the frame rate changes. Very strange look below 15 Hz (you see
> spirits
> walking around). TV look at 30 Hz. Very noticeable change at 54 Hz -
> 720p/60 looks better than it should because of 60p. 720/50p does not
> look
> nearly as good as does 60p. SWL
>
> At 01:02 PM 2/1/2006 -0600, you wrote:
>
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