Tom's Hardware > Forum > Applications > Multimedia > DivX Smooth Play
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Anonymous   03-01-2001 at 06:36:41 PM

Does anyone can tell a good graphics card to play DivX home movies?

Specs: Codec DivX Fast 6000Kb/sec (average 300Kb/sec)

I've tryed two systems:

- Riva TNT with Duron 900, 128M RAM (133 CAS2), Windows Me is not enough (not a 100% smooth play)

- ATI RAGE 8M with PIII 600, 128M RAM (133 CAS3), Windows NT 4, is not enough (very jumpy play)

The ATI plays MPEG2 movies with larger bitrates with CPU usage around 80%

Is there a "Graphics Card/Direct X" combination that enables hardware assisted DivX play? Things like IDCT or motion compensation?

Thank's


OC is nice but risky!

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Anonymous   03-02-2001 at 07:48:56 PM
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My understanding that CPU and memory are two of the most important criteria with the vid card commong in a close 3rd. The vid card is basically just an out put to the monitor with the cpu doing the brunt of the work. I've notice some units playback get gittery when you move the mouse around.
I'd say go with nothing less then a AMD 800Mhz with 256 and
an Nvidia MX card.


Take Care.
Yes,I know I'm immature, but my goal is insanity!

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lakedude   03-02-2001 at 10:52:50 PM
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vid cards do not yet support mpg4(DivX) in hardware. ATI cards do suport mpg2(DVD) in hardware and should be taking most of the load off a CPU. I have an add on hardware decoder on a cel600 system and it plays DVDs perfect with a CPU load of about 25%. DivX is another matter, it is all CPU and software, a video card can't help. Divx is unpredictable I have a cel400 laptop with 64MB that plays DivX movies perfect. I built a cel400 desktop with 96MB and it plays like crap???

Anyway try another player besides M$ media player. If you want to stick with MP then find the CPU quality slider and turn the CPU quality to a lower number like zero. The image quality will suffer a little but playback will be smoother.

Also make sure DMA is on (assuming you have DMA drives).

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Anonymous   03-29-2001 at 06:19:16 AM
- 0 +

I think you're aiming a bit high with 800Mhz/256Mb/geforce2MX as a minimum for smooth DivX;-) playback.
the computer I use at work is a PentiumII 350Mhz with a Matrox G100, 64MB ram and win95 and DivX;-) movies play pretty smooth even straigth from the 16xCD-Rom.
that's no lie. there's no sound unfortunately since the computer has no sound hardware.
a friend of mine has a PentiumIII 450Mhz with a TNT2 vid-card, soundblaster 1024 player and he also enjoys DivX;-) movies that run smoothly.
until recently my main machine at home was a Duron 600Mhz with ATI all-in-wonder-128 (16MB PCI version) and on-board sound. very smooth DivX;-) playback on the TV-out there indeed. it's now a TB900 (running @1050Mhz) with a soundblaster live. still showing well.
I also use a notebook with a PentiumIII 650Mhz (500Mhz on battery) with 128Mb ram, ATI 8Mb vid-card and win98se. no jerky playback there either (not even when running on battery).
I read a lot of the postings where people with high spec machines complain about jerky and jumpy playback. I assume it's not so much the hardware you're using it's more the software setup that's important. apparently too many tasks running in the background disturb the playback.

respect!

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Anonymous   03-29-2001 at 09:26:47 PM
- 0 +

I've seen divx movies in full quality (720*512 and 128bit mp3 stream) run on a p 233 mmx 32mb(no kidding)
And about the postings where people with high spec machines complain about jerky and jumpy playback:
I'm one of them i haven't got any background task running at all
i'm talking about a
PIII 800 @ 992
256mb cas2 133mhz
gf mx
sb live etc..
system is configurated well (DMA on and stuff)
I guess it has something to do with a video/audio codec incompatibility since only some movies don't run probaply (how the ^%#$#*$$& do u spell this word) and i tried all kind different codecs audio and video

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