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GravY
07-26-05, 10:56 AM
I just downloaded QT7 and was attempting to watch the Brothers Grimm trialer in HD and it runs very choppy and cpu utilization is 100% - any work arounds for QT7??

BFG6800GT

|MaguS|
07-26-05, 11:08 AM
Don't think there is any way around it other then getting a faster CPU... I can run 720p videos just fine but once I bump up to 1080p it starts chopping up.

GravY
07-26-05, 01:20 PM
Don't think there is any way around it other then getting a faster CPU... I can run 720p videos just fine but once I bump up to 1080p it starts chopping up.

maybe I'll scale back the size of the vid and see if that helps.. getting time for me to upgrade mobo/cpu.. ugh

GravY
07-26-05, 01:32 PM
downloaded the 480 version and it runs just fine, cpu 50-80%.. still think I should be able to run larger version but oh well..

GamerGuyX
07-26-05, 09:00 PM
.. still think I should be able to run larger version but oh well..

Where did you get this idea from? The larger the video the more processing power it takes to run. Especially seeing as if that "larger video" is in 720p or 1080i/p.

Holy Smoke
07-28-05, 06:57 PM
It's the H.264 codec. I tried the 1280x720 trailer on my A64 3500+ and it's choppy as hell. Even at 852x480 it seems to be losing a few frames.

According to the Inq (http://theinquirer.net/?article=24954) modern CPUs simply aren't powerful enough to play HD media encoded in H.264 unassisted.

Banko
07-28-05, 07:11 PM
Well if you get a 7800GTX and download the 80.40 drivers the video card actually supports H.264 acceleration.

GravY
07-28-05, 08:46 PM
It's the H.264 codec. I tried the 1280x720 trailer on my A64 3500+ and it's choppy as hell. Even at 852x480 it seems to be losing a few frames.

According to the Inq (http://theinquirer.net/?article=24954) modern CPUs simply aren't powerful enough to play HD media encoded in H.264 unassisted.

thanks for the info.. :)

Riptide
07-28-05, 09:45 PM
I've seen the demos and I'm not that impressed. To me it's way high on CPU utilization when it's not much, if at all better, than most of the HD WMV stuff I've seen so far.

fivefeet8
07-29-05, 12:55 AM
http://www.htpcnews.com/main.php?id=nvidia_editors_day_3

Something interesting about H.264 hardware assist on Nvidia cards. Nvidia also seems to be working more with other software companies to include support for their card's video hardware assist features.

DSC
07-29-05, 10:49 AM
H.264 is way superior to WMV9. Embrace the future, WMV is not it.

http://www.kickassanime.org/wiki/index.php?title=WMV9

http://www.kickassanime.org/wiki/index.php?title=AVC

n4cer
08-02-05, 05:24 PM
H.264 is not superior to WMV9. WMV9 and the WMV9 Advanced Profile codec (also known as VC-1) and H.264 were compared on several occasions along with a number of other codecs for inclusion in the HD-DVD standard and WMV beat H.264 in each comparison both in quality and in quality/bitrate. WMV is also cheaper to license and implement in silicon than H.264. There are several threads on http://www.avsforum.com in the HTPC forum that detail the tests.

x[sliver]
08-04-05, 10:58 AM
What n4cer said ^^^

Darkfalz
08-04-05, 11:27 PM
The problem is most likely QuickTime. They make their technologies for Macs, and their ports to PC architecture are always badly coded. It was the same way back in 1999 with the first Sorensen 4 codecs, which played fine on a 90 MHz Mac but chopped up in a 200 MHz PC. Even today, they support only the most basic kind of acceleration on PC hardware (a single buffered overlay with no page flipping, and even that only works on some cards!).

Mac platform H.264 is going to be much slower in a PC because it has been designed/coded that way. They want you to convert to Mac because you think that a PC must be slow if it can't play back these videos at a decent framerate and current Macs can.

Demigod
08-05-05, 05:34 AM
Strangly qt7 beta 1 ran better for me than beta 2
Hopfully they will fix it for the final.