Hi Matt,
Okay, I'm replying to you before your reply to me arrives, but so far
you've restored my faith in reality ;-)
Cheers,
Tone :)
ps - I've now imbibed several units of alchohol and so far that's not
illegal, although probably inadvisable when replying to an email list <g>
> Well I hate to be disagreeable ;) and I do know that "convention" is
> starting to use the term 1080i to mean 59.94i and, as a perfectionist, I
> truly hate that. In our facility the broadcast folks do use the term
> "1080i"
> to mean 59.95i but in my post production part of the facility I insist on
> my
> people using the correct terminology. Since we in fact deal with all the
> formats it is of utmost importance to specify things exactly what they are
> to avoid confusion. So, when we have a DVCPRO-HD tape it is marked
> 720P/59.94 or 720P/23.976 and if you get one of our HDCAM tapes it will be
> clearly marked as either 1080/59.94i or 1080/23.976PsF. Now that we have
> our
> SR machine some of our tapes actually say HDCAM SR 720P/59.94 and some say
> HDCAM SR 720P/23.976. Telling someone that you are delivering them a 1080i
> format just isn't saying enough. That does not tell them what the frame
> rate
> is I don't care what convention is.
>
> Please also read my next message in reply to Tony,
>
> Regards
> Matt Sherman.
>
>
> -----Original Message-----
> From: Rich Torpey [mailto:rich(at)nyrhino.com]
> Sent: Saturday, August 27, 2005 9:47 PM
> To: DS(at)Softimage.COM
> Subject: Re: 1080i format question
>
>
> Mathew Sherman wrote:
>
>> Yet again I must remind everyone that saying "1080i" does not have
>> anything to do with frame rate. People are getting confused when
>> people tell them "we need 1080i" that it somehow precludes them from
>> working at 24PsF. But the only thing truly that 1080i means (in this
>> case I am referring to the HDNet spec) is that they do not want 720P
>> originals. Sony HDCAM is a 1080i format regardless of what frame rate
>> you are using. 24P is also 1080i and that is exactly what HDNet means.
>> They don't like DVCPRO-HD since it's low bit rate (100Mbps) and is a
>> 720P format (natively).
>>
>> In terms of what to do for a possible film-out well definitely working
>> progressive will help the film look better, however these days there
>> are such good de-interlacing tools that I bet one would have a hard
>> time telling the difference between 59.94i (proper term) or 23.976PsF
>> on the cinema screen once all is said and done, properly.
>>
> Sorry to disagree Matt but in the US 1080i has become synonymous with
> 59.94 fields. Mark Cuban was involved in a discussion on the Telecine
> Internet Group last year on this topic. He was quite adamant that the
> research they've done on viewer preferences were so strongly in favor of
> the higher frame rate that they chose to require that for delivery. I'm
> not surprised since Mark Cuban is so involved with sports broadcasting
> and the higher temporal resolution makes a difference. I happen to
> prefer 720p for sports for the same reason - disclaimer: I'm ex-ABC
> engineering.
> If you're planning a film out there is a big advantage to working in 24p
> (again, common usage in the US translates to 1080psf(at)23.97 - even for
> film jobs you'd need to specify true 24p if you didn't want 23.97psf!).
> Yes, there are de-interlace tools but it doesn't look the same and we've
> been through it on numerous projects.
>
> --
> Richard Torpey
> VP Engineering
> Rhinoceros/MultiVideo Group
> 50 East 42 Street
> New York, NY 10017
> (212) 986-1577
> (212) 986-3833 fax
> (212) 692-4465 direct
>
>
>
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