[opendtv] Re: Samsung Rep admits HDMI won't support 1080p until v.1.3
- From: John Golitsis <john@xxxxxxxxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Thu, 10 Nov 2005 16:12:42 -0500
I've got a dual 2.5 G5 with a 2.1TB XServe RAID, so I'm okay on the
hardware side. For source material, I'd generate a Maya sequence to
1920x1080 resolution.
I have a ready-to-go 1 minute sequence with test clips from
Panasonic, so I'm just now rendering that out to H.264 at 1920x1080
at 15Mbps.
On 10-Nov-05, at 7:29 AM, Craig Birkmaier wrote:
> An interesting question.
>
> There is no interframe codec that will support 1920 x 1080@60P that I
> am aware of, so you would need to use either uncompressed files or
> some form of intraframe compression to lower the bit rate to storage.
>
> Today you can work with 1920 x 1080 sources in FCP, at multiple frame
> rates. But I am not aware of any configuration that could actually
> play 1080@60P at speed. Currently you need a top of the line G5 with
> fiber channel arrays to support real time play out of 1920 x 1080@24P.
>
> The most common codec for HD quality source in FCP is the Panasonic
> DVCPro HD codec that has a bitrate of 100 Mbps; this codec can
> support 1920 x 1080 @30i/P. But most people are converting their HD
> source to uncompressed when they are editing in FCP.
>
> So 1920 x 1080 x 60 = 1.24 billion samples per second to storage. If
> each sample (Y, R-Y and B-Y) are 10 bits you are looking at something
> in excess of 3 Gb per second for storage. With H.264 you may be able
> to bring this down to a few hundred Mbps without any visible
> artifacts, however I do not know if Apple will let you use the H.264
> codec at this level of resolution.
>
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