1 Topic by its_omarahmed (edited by its_omarahmed 18-09-2025 19:33:51)

Topic: Need a quick guide to installing SVP on Windows 11 with an HDR monitor

Greetings,

I have a laptop with an external monitor, and these are the specifications below:

My RIG (Laptop) + Odyssey 34” OLED 3440x1440 175Hz monitor.
Alienware x17 R1
- NVIDIA® GeForce RTX™ 3080 16GB
- Intel® Core™ i7-11800H @ 2.30GHz
- SO-DIMM XMP DDR4 32GB RAM
- NVMe Samsung 1TB
- Power Supply 330W
- Intel® Killer Wi-Fi 6

All of my video files, whether movies, series, or animations, support HDR. Therefore, I need a comprehensive and concise guide to install your tool according to my previous requirements. For your information, I only use KMPlayer and PotPlayer video players. I don't want to use any others, given their high durability and distinctive theme. Therefore, I want this guide to be dedicated to them only. I also use filters like madVR and LAV.

For your information, I searched for the manual on your website, but unfortunately, it's very old and didn't help at all, or perhaps I'm having trouble with the installation method.
The most important problems I encountered:
- The tool is incredibly strange. Sometimes it works without an OSD, sometimes it doesn't work at all, and sometimes it doesn't respond to settings, such as when I set the color output to YV12 or P010, but the output remains NV12.
- When it works, the colors don't output correctly, appearing washed out, using the ffdshow raw video filter.
- I changed the color outputs, but the same problem persists: the colors are dull.
- From what I recently understood, the ffdshow filter doesn't support HDR, so I installed the AviSynth+ filter through the tool itself, but the filter didn't appear in the player. I tried searching and found that I needed to install an additional plugin called avisynth_filter_64.ax. I successfully installed it, and it appeared in the player, but nothing happened.
- The SVP tool only works with the ffdshow raw video filter (with washed out color) Unlike AviSynth, it doesn't work at all.

I've tried every available method and solution, but to no avail. I hope there's a comprehensive guide to all of this.

I'll attach screenshots of the settings and some of the tool's event logs, hoping they'll help resolve the issue.
https://drive.google.com/drive/folders/ … sp=sharing

Thank you.

Re: Need a quick guide to installing SVP on Windows 11 with an HDR monitor

quick guide:
1. install SVP with default options
2. follow PotPlayer's guide
3. that's it

DO NOT:
- do not use ffdshow
- do not use KMPlayer
- do not install anything if you're unsure, everything needed is already installed by SVP!

3 Reply by its_omarahmed (edited by its_omarahmed 21-09-2025 22:44:37)

Re: Need a quick guide to installing SVP on Windows 11 with an HDR monitor

Thank you for your response. However, the AviSynth filter doesn't appear as shown in the shot unless I install the avisynth_filter_64.ax plugin from CrendKing.

But when playing any movie with avisynth_filter_64.ax installed and preferred, SVP doesn't work, despite applying the settings as shown in the guide.

This problem occurs with both Pot and KM players

Re: Need a quick guide to installing SVP on Windows 11 with an HDR monitor

> However, the AviSynth filter doesn't appear

run SVP 4/avsf/register.bat manually (as admin)

5 Reply by its_omarahmed (edited by its_omarahmed 22-09-2025 10:25:19)

Re: Need a quick guide to installing SVP on Windows 11 with an HDR monitor

Alright, I did that but nothing happened. It seems the script in the bat file is incompatible, so I installed the filter manually using this command: 

"%windir%\System32\regsvr32.exe" "C:\Program Files\SVP 4\avsf\avisynth_filter_64.ax"

I successfully installed it and added it to both Pot and KM players. But what's strange is that the video started stuttering when SVP is enabled, even at 45 fps, whether in automatic or VR mode.
Even though it was working normally with ffdshow even at 120 fps. Its only issue was just with color display.

Re: Need a quick guide to installing SVP on Windows 11 with an HDR monitor

?

Re: Need a quick guide to installing SVP on Windows 11 with an HDR monitor

you can send a bug report from the app right after the problem occurs

>  It seems the script in the bat file is incompatible, so I installed the filter manually using this command

any idea what exactly is incompatible in the bat file? it's pretty straightforward, why it doesn't work on your system?
%windir%\System32 isn't in the PATH?