DScaler

[Guest]

When I use the option "DScaler & other Software - priority given to DScaler" CPU load goes down to 80% and every thing looks fine with no dropped frames.
But there is a problem when changing channels, it can take up to 30 seconds to "tune in" the picture???

[-brat-]

So, on my system -
WinXP SP1a on Athlon @ 1396Mhz, 256 DDR RAM, GeForce 2 Ti -
I've no problem. I've selected that my CPU is below 300Mhz, Best Picture Quality and Keep CPU for other applications. So the CPU usage is under 52% at all the time.
-brat-

[BieTieKay]

i got about 2% CPU Usage:

P4 2.8
Hauppauge WinTV (878)
Dscaler 4.1.7
Geforce FX 5200
Options: Best Quality; Keep CPU for Other apps; Bob Deinterlacer; Adaptive Noise Reduction



So; the you´ve done the best job i´ve ever seen ...

[Guest]

hi,
i use same options a bietiekay except noise reduction and get around 4% cpuusage, the deinterlace methods can be cpuhungry up to 100%.

i already posted this problem? but i think it fits here better,
if dscaler is set "on top" it begins to stutter if any other mm- application is run, it dont if it isnt set "on top" .....

(os: win2000)

by the way i seen on other players the option "preview" meaning not working in overlay mode rather then use the vga card directly?

greets

Mike

[Anibal]

Hi
In my PIII 800 with aimslab xtreme, dscaler use about 2 to 5%, but if I use the mouse right button in the desktop, the process dscaler take about 48% of the cpu and stay in this value until I close sesion and start sesion again.
The video card is nvidia gforce2 mx200 and the OS is WinXP

[guru]

i recently reinstalled winxp after that dscaler 4.18 cpu usage is hovering between 60-90% ... funny coz before reinstalling xp it was around 2-3% on a p2 400.. dscaler 3.12 still hover around 2-3%. so i went thro dscaer.ini made all the common parameters values same.. still its around 20-40%... anyother ideas?

btw deinterlace = simplebob
no filters/judderterminator etc in both versions [3.12/4.18]

[Mr.DJ]

Since I haven't seen anybody else in here mention it, I will.

The following applies to Windows XP (I'm using the Pro edition)

A while back, I was playing around with my PC's ACPI/APIC funktions. The reason to this was I where having problems with sound being cutt off in a pc game(BloodRayne). Disabling ACPI and APIC by choosing "Standard PC" (explanation comes later) solved the problem(Later I found out it was enough just to disable APIC). The soundcard used was an Audigy Platinum Ex.

I'm using the s-vhs output from my Sigma Design's Xcard(hardware mpeg/divx decoder)together with my MSI TV@nywhere card.

With ACPI disabled I couldn't get a smooth playback with Dscaler.
I tried disabling judder terminator and choosing "lower than 300 MHz".
Eventhough I used an Athlon XP 3000+, with 1gig of RAM and a Radeon 9800 Pro, I couldn't get smooth playback. Then after a reinstall of Windows XP Pro, I re-enabled ACPI and Dscaler worked perfect again.

ACPI: ACPI controls Windows XP's hardware/IRQ/Power saving -management.

APIC: Increases the numbers of IRQ's. Before APIC your PC only had 15 IRQ's. Each component in your PC is selected via an IRQ number. Eks Graphics card, soundcard, lan card, tv card and so on. As time went the 15 IRQ's, began to look like a bottle neck and then APIC was invented. As of right now, I can't remember how many more IRQ's it gives but the number of 25 IRQ's(total) comes to my mind.

Normally XP chooses the setting automatically for you, when you install. This is done based on your motherboards specs. My point is that it doesn't always enable ACPI eventhough your motherboard supports it. You can see in your motherboard manual(you know, the one you never read)if it supports ACPI.

How to manually select/deselect ACPI and APIC: Under the XP installation, when you see the text "Press F6 if you need to install a third-party SCSI or RAID driver", press F5 instead and you will get a list of choices(this text messege comes at the beginning of the installation, and it dissapears again automatically, so you will have to pay attention). If you also wanna install drivers, just press both F5 and F6(and I don't mean simultaneously ). After you have choosen one of the options on the list, the installation should continue as normal.

The options to choose from should look like this:
ACPI Multiprocessor PC: Use for a multiple-processor ACPI computer(or P4 with HT enabled)
ACPI Uniprocessor PC: Use for a ACPI multiple-processor board but with a single processor installed
Advanced Configuration and Power Interface (ACPI) PC: Use for a single processor motherboard with single processor.
Compaq SystemPro Multiprocessor or 100% Compatible: Use for a Compaq Systempro computer.
MPS Uniprocessor PC: Use on non-ACPI computers dual processor motherboard with a single processor installed
MPS Multiprocessor PC: Non-ACPI computers with a dual processor running
Standard PC: Any Standard PC, non-ACPI, or non-MPS. Could be a 386, 486, Pentium, Pentium II, or Pentium III
Standard PC with C-Step i486
Other

I wont go through all the settings, just some of them:
"ACPI Uniprocessor PC" is the default choice, if your motherboard supports both ACPI and APIC(and your not using a Pentium 4 with HT enabled). Creative recommends to choose the "Advanced Configuration and Power Interface (ACPI) PC" option if you have sound problems and have a ACPI ready motherboard(this option disables APIC, so you have only 15 IRQ's). That is also the setting I use at the moment. The "Standard PC" setting disables ACPI and APIC, and is used for people who don't wanna use these funktions or is used by old PC's who don't support ACPI.

How do I check what setting I currently use?: Click Start, (Settings) click Control Panel, (Switch to Classic View) and then double-click System.
Click the Hardware tab, and then click Device Manager and the + beside Computer.

Buttom line is, if your computer supports ACPI make sure it also actually uses it. Because in my experience, XP becomes much better at manage it hardware ressourcess and this gives better video performance with Dscaler.

Phew!! this post got longer than I had anticipated, but I hope it helps someone.

[DieterDHoker]

I was wondering, what compiler is used for the Dscaler binaries?
The Ms-compiler of VS6 or .NET or the intel-compiler ?
The last one gives me 30% speed increases in other programms compared to MS.

[RobM]

DieterDHoker,

Most time consuming code is done with optimized assembly code. I don't think recompiling with the Intel compiler will noticeably improve execution speed.

[korogui]

Its strange dscaler runs different depending on my video card instaled here

CPU Spec:

Athlon XP2000, 2x512MB DDR400, ASUS A7N8XE-Deluxe.

With Saphire Radeon 9000 Pro. CPU Usage = 40~50% (Catalyst 5.7)
Same system with GeForce 6600GT = 90~100% cpu usage. (Forceware 77.76)

Deinterlace = Greed2Frame/TomsMoComp
Selected Processor Below 300MHZ/Best Quality/Priority to other softs.

*** Update: Just instaled forceware 78.03 beta
Now windows says DScaler is using 0% CPU. (Greed2Frame)
5% (Greed2Frame + Temporal Noise Reduction)

WTF, i dunno if its correct, but at least my CPU cooler is silent running DScaler now.

[hammerdown]

I have been using v4.1.6 since it came out, and never used any of the recent releases. I just tried v4.1.15 and had a bad experience.

The CPU usage is all over the place. It's like when the app is fullscreen usage is high (85-95%), if I go back to window mode then the usage slowly creeps back down to low (1-3%). But even in window mode sometimes for no reason it goes high! If that is by design then how do I stop it?

I noticed the Settings > General Hardware > CPU Using options are different in v4.1.15 than what I've ever seen. There are now three options in stead of two. Too bad none of them seem to work correctly for me. Went back to v4.1.6 and all is fine again. Oh well

Hammer

[yugioh476]

hmmm reducing CPU usage. my pc is 667Mhz and my brother's pc is 500 mhz. that gives you and idea of to keep 500 mhz hard ware setting in Dscaler.

[nhwk]

I've found something interesting: If I set my refresh rate to 60hz (lcd monitor), load dscaler, cpu usage will be normal until I move the window. After moving the window dscaler cpu usage shoots up and stays at 99% until I change channels or dshow->reset card. In 75hz refresh rate however, this does not happen!

This happens with JudderTerminator on and off, and deinterlacing set to anything.

This is on an Athlon 64 3500+

[Felix]

@nhwk - do you use a SIS chip mainboard. If yes its the crappy SIS chip.
_________________
dscaler 4.1.15
Typhoon PCI Capture Card Philips (Art 50673)
Athlon XP@220*10Mhz
512MB Ram (400Mhz, CL3 - 64MB reserved for onboardgraphics)
Asrock SIS 741GX flashed to 741 with 1.03EH performance bios

[JJJ]

Thanks LaurentG, It works wey well on my A64 2.0@2.6 on Asus A8V. Cpu load is about 10% . Picture quality is the same as on 100% load.