From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <c4980284402c3d2d440a40b5fc69dc78@quintile.net>
From: "Steve Simon" <steve@quintile.net>
Date: Tue, 20 Oct 2009 10:15:58 +0100
To: 9fans@9fans.net
In-Reply-To: <4ADD1D76.8050603@maht0x0r.net>
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Subject: Re: [9fans] Barrelfish
Topicbox-Message-UUID: 8c235b44-ead5-11e9-9d60-3106f5b1d025

> Add into that the datarate of full 10 bit uncompressed 1920x1080/60i HD
> is 932Mbit so your 1Ghz clockspeed might not be fast enough to play it :)

Not sure I agree, I think its worse than that:

1920pixels * 1080lines * 30 frames/sec * 20bits/sample in YUV
=> 1.244Gbps

Also, if you want to encode live material you have bigger problems. encoders have
pipeline delay but this must be limited, usually to a few hundred millisecods.

This means you can only decompose the stream into a few frames which you can
run on seperate cpus. Spatial decomposition of the frames helps too but this is
much more difficult to do well - i.e. to ensure you cannot see the joins.

-Steve