[mythtv-users] My next Myth box
Michael T. Dean
mtdean at thirdcontact.com
Wed Sep 1 11:17:08 EDT 2004
On 09/01/2004 02:17 AM, Jarod Wilson wrote:
> On Aug 31, 2004, at 22:59, Jarod Wilson wrote:
>
>> Just announced today, the AlienWare DHD:
>> http://www.alienware.com/intro_Pages/dhd.aspx
>>
>> Rip MCE off there and Myth it up. I'll take two.
>
> Even better link for it:
> http://www.alienware.com/product_detail_pages/DHD/dhd_features.aspx?
> SysCode=PC-DHD301&SubCode=SKU-DEFAULT
Wow. Combines 7 features in 1: TV, PVR, CD Jukebox, VOD (Video on
Demand), Gaming Console, Computer, Photo Album. And, for only $67 you
can put Norton Antivirus on it (can you imagine trying to watch a movie
with friends when your virus scan kicks in and causes all sorts of
prebuffering pauses :). ROTFL.
I wish I could build myself a system like that for only $5,683.00 (for
the DHD-301 w/ P4/2.8GHz, 512MB RAM, 80GB HDD, ATI Radeon 9600XT system)
or $6,638.00 (for the DHD-303 w/ P4/3.2GHz, 2GB RAM, 200GB HDD, ATI
Radeon X800 Pro system)... (For real, can you imagine the Myth box you
could build just with the price difference--$955--between the two?)
And, if you crank everything up on the DHD-305 in the configurator
(P4/3.4GHz, 2GB RAM, 400GB HDD, ATI Radeon X800 XT, 12X DVD+/-RW), the
price is $8,073.00! Too bad this isn't a Microsoft-funded system (like
the XBox) that I could re-load with Linux.
The only thing that the MS MCE has that Myth doesn't is VOD, and
Microsoft is likely the only company with enough lawyers to make that
possible. (And, to make things more interesting we have MythWeb,
MythWeather, MythBrowser, MythNews, MythPhone, and more. Even though
you can do some of them (i.e. browser to get to weather or news) on the
MCE, the Myth solutions are integrated into the UI and don't require
sitting 2 feet from the 30" monitor.)
So does anyone know how they do the VOD? If you figure 4GB for a DVD
that contains a 2-hr movie, that's 4294967296 bytes / 7200 sec =
596523.24 bytes/sec (between 4500 and 5000 kbps), and many DVD's are
using dual-layer or even dual-sided discs, so this is definitely not the
worst-case scenario. Even on my 3Mb/s cable connection, the theoretical
max throughput would be under 300KB/sec. That means that they would
have to either download first and then let you watch (not really VOD) or
use a different compression format (i.e. WMV Pro). If using WMV Pro
format, they'll get at most a 3:1 improvement over MPEG-2 (
http://www.microsoft.com/windows/windowsmedia/9series/codecs.aspx ),
meaning they would still need almost 200KB/s throughput--which would
take some serious QOS support for real-time download and wouldn't leave
much (if any) bandwidth for anything else (and would probably be
impossible if my neighbors--with whom I'm sharing bandwidth--were using
VOD systems, too). So, to make it true VOD, wouldn't they have to
reduce the resolution and/or bitrate--meaning your VOD is less than DVD
quality? I guess it also means that VOD won't be HD-capable for a long
time (check out the file-sizes on these HD clips--
http://www.microsoft.com/windows/windowsmedia/content_provider/film/ContentShowcase.aspx
-- 81MB for 1:42 @ 720p (813KB/s) or 107MB for 1:42 @ 1080p (1MB/s))!
If you look at NetFlix--currently with about 12.5 percent of the video
rental market ( http://tinyurl.com/6647d ) and shipping 3 million DVD's
per week ( http://www.netflix.com/PressRoom?id=5206 ), VOD seems like a
limited resource. NetFlix estimates shipping 5 million GB of data on a
busy day--according to their estimates, that's 70% of the entire daily
capacity of the Internet in the US and Canada. Now that's some serious
bandwidth. Imagine if 15% to 20% of the market tried to do VOD...
Mike
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