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05.06.2008 at 01:00PM PDT, ID: 23380748
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1280*720 video freeze when watching movie - min reqs for home theatre card?
half height ATI 128 rage (16meg) AGP 2.0 in XP Pro w 2ghz intel proc, 1g ram.  using powerstrip to get 16:9 image.

Trying to use this machine as home theatre source to projector (mitsu 1500).  works beautifully until i try to watch hi-res source file (so anything recorded in roughly larger than 700-800 meg file for 2 hour movie).  Then, regardless of codec (xvid, dvx, any avi etc), after few seconds CPU creeps up to 100% and image (and sometimes sound) freeze up (especially if image is "busy" w lots of movement).

Might be way off on this, but thought that 1280*720 times 16-bit color is roughly 15meg memory? so 16meg card at 60hz should be enough to draw 30fps fullscreen movie?  would it help to 'upgrade' to 64meg card? (old half-heights hard to find!)

any and all help appreciated!
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Question Stats
Zone: Computer Hardware
Question Asked By: new_wes
Solution Provided By: garycase
Participating Experts: 1
Solution Grade: A
Views: 7
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05.06.2008 at 02:34PM PDT, ID: 21511280

Rank: Guru

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05.06.2008 at 02:34PM PDT, ID: 21511280

Rank: Guru

The CPU/video card combination is simply not powerful enough for the encoding you're using at higher resolutions ==> that 100% CPU utilization is the key.   It's not a function of the amount of memory in the video card as much as it's the raw processing power ... and your CPU simply doesn't have enough "horsepower" for the decoding tasks at that resolution.

Try playing a DVD ... MPEG2 decoding is less CPU-intensive than Xvid, Divx, etc.   I'd expect a 2GHz CPU to be able to play that ... although recoding it to 1280 x 720 may still be pretty CPU intensive (watch the CPU utilization when you try this)

Bottom line:  A faster video card with more memory may help marginally ... but the real issue here is your CPU.   That system simply won't support the newer very-high-compression codecs, which are very CPU-intensive ... and the higher the resolution, the more "horsepower" they need.
Accepted Solution
 
 
05.06.2008 at 08:35PM PDT, ID: 21513027
You're most welcome.

... by the way, this is an excellent board to build an HTPC with:  http://www.newegg.com/Product/Product.aspx?Item=N82E16813121336

Add an E8400 [http://www.newegg.com/Product/Product.aspx?Item=N82E16819115037 ], 4GB of memory [http://www.newegg.com/Product/Product.aspx?Item=N82E16820211188 ]; and you'll have a superb HTPC with excellent video capabilities that can easily play all of your Xvid & Divx videos as well as BluRay DVD's (if you ever decide to add a BluRay drive).   Total cost less than $400 if you have a case/hard drive/optical drive you can re-use ... a bit more if you need to buy those.
 
 
 
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