[opendtv] Re: FRExt Statement
- From: Mark Schubin <tvmark@xxxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Mon, 22 Nov 2004 15:31:46 -0500
And to learn the latest about FRExt, come to the Compression
Confabulation at the Hollywood Post Alliance Technology Retreat, January
26 in Rancho Mirage, California:
http://www.hpaonline.com
TTFN,
Mark
Tom McMahon wrote:
>To complete the story -
>
>"The Joint Video Team (JVT) of ITU-T SG16 Question 6 (VCEG) and ISO/IEC JTC
>1/SC 29/WG 11 (MPEG) would like to inform you of the
>completion of our project for the development of extensions to the Advanced
>Video Coding standard (ITU-T H.264 & ISO/IEC 14496-10).
>The development of these extensions, now called the "Fidelity Range
>Extensions" (FRExt), was completed during the Redmond JVT
>meeting of 17-23 July 2004.
>
>Four new profiles were added to the standard in this set of extensions, all of
>which support the full set of capabilities of the
>existing Main profile, plus an 8x8 transform and encoder-specified
>quantization weighting matrices. The new profiles form an
>"onion-like" nesting of capabilities relative to each other and the existing
>Main profile. These four new profiles are summarized
>in the table below. Using the new FRExt extensions, the ability for an
>encoder to optionally send a high-quality compressed alpha
>channel is also supported. Additionally, these extensions support
>analysis/synthesis representation of film grain characteristics.
>
>Profile Name Maximum Chroma Format Maximum Sample Precision
>"High" (HP) 4:2:0 8 bits
>"High 10" (Hi10P) 4:2:0 10 bits
>"High 4:2:2" (Hi422) 4:2:2 10 bits
>"High 4:4:4" (Hi444) 4:4:4 12 bits "
>
>-----Original Message-----
>From: Tom McMahon [mailto:TLM@xxxxxxxxxx]
>Sent: Monday, November 22, 2004 11:08 AM
>To: 'opendtv@xxxxxxxxxxxxx'
>Subject: RE: [opendtv] Re: News: Video board approves Apple-supported codecs
>
>Four new profiles were added to H.264/AVC this last July, including one ("High
>Profile") that offers new coding tools that in some
>cases offer improved coding efficiency and/or quality over the Main Profile
>that was completed the year before.
>
>Also, while it is true that H.264/AVC evolved from H.26L, there were a large
>number of new tools added along the way.
>
>- Tom McMahon (Co-Chair, H.264/AVC Fidelity Range Extensions ("FRExt")
>Amendment AHG).
>
>-----Original Message-----
>From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] On
>Behalf Of Philip Hodgetts
>Sent: Monday, November 22, 2004 10:41 AM
>To: opendtv@xxxxxxxxxxxxx
>Subject: [opendtv] Re: News: Video board approves Apple-supported codecs
>
>At 1:26 PM -0500 11/22/04, Manfredi, Albert E wrote:
>
>
>>"'The investment we made in the MPEG-4 standard is paying off
>>incredible dividends for QuickTime and for Apple,' Frank Casanova,
>>Apple's director of QuickTime product marketing, told MacCentral.
>>'Allowing the ISO the use our file format has turned out to be the best
>>decisions we could have made.'"
>>
>>Is this for real? Anyone know?
>>
>>
>
>Yes, it's for real. The MPEG-4 container format is *based on* QT's container
>format. It's not exactly the same but it's closer to QT
>than to any other media format, because, of course, QT had the only flexible
>container format.
>
>Microsoft were somewhat bent out of shape when QT was accepted as the
>container format (hence the MS attempt to hijack MPEG-4 a few
>years back before they started calling it Windows Media).
>
>Can't comment about the history of H.264 but the final standards are around a
>year old.
>
>--
>Philip Hodgetts
>http://www.IntelligentAssistance.com
>
>The ProApp-Hub
>All the news you need: timely and useful. Never miss a critical warning.
>Daily productivity tips.
>http://www.ProApps-Hub.com
>Download Now. It's Free!
>
>
>
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