How to do 3D Lut color correction (.3DL .Cube) with avisynth(+) ?

[Stereodude]

Thanks for the plugin videoh I got a black screen when I set fullrange=false. It works okay with fullrange=true.

LoadPlugin("C:\HDTV Tools\DGDecNV\DGDecodeNV.dll")
LoadPlugin("C:\HDTV Tools\avscube\x64\vscube.dll")

DGSource("00005.dgi").crop(0,114,-0,-114).ConvertBits(16)

ConvertToPlanarRGB(matrix="PC.709").crop(0,1,0,-1)

Cube("C:\HDTV Tools\avscube\U-CANON-C-LOG-V1-LTR.cube", fullrange=true)

ConvertToYUV420(matrix="PC.709").ConvertBits(8, dither = 0)

[videoh]

I'll look into it, Stereodude. Thanks for pointing it out. Can you please give me your cube file? Thank you.

[Stereodude]

Originally Posted by videoh

I'll look into it, Stereodude. Thanks for pointing it out. Can you please give me your cube file? Thank you.

It's in this zip file.

http://stereodude.net/LUT.zip

[videoh]

Got it, thank you.

Can you give me a mediainfo dump on your source file, please? Is it HDR, etc?

[videoh]

Seems that this was fixed in timecube at some point:

https://forum.doom9.org/showthread.p...30#post1850130

The code link there is broken so I'll try to hunt down the r2 changes.

[videoh]

Latest code is here:

https://github.com/sekrit-twc/timecube

I'll do a re-port to Avisynth+ starting with this latest code.

[Stereodude]

Originally Posted by videoh

Got it, thank you.

Can you give me a mediainfo dump on your source file, please? Is it HDR, etc?

General
Complete name                            : E:\TempBD\TIM\05\00005.h264
Format                                   : AVC
Format/Info                              : Advanced Video Codec
File size                                : 618 MiB
Overall bit rate mode                    : Variable

Video
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4.1
Format settings                          : CABAC / 4 Ref Frames
Format settings, CABAC                   : Yes
Format settings, RefFrames               : 4 frames
Bit rate mode                            : Variable
Maximum bit rate                         : 38.0 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits

It is FHD directly from a Blu-ray. It is not HDR. It looks very flat. I believe that they shot the footage in C-Log (Canon Log) and didn't bother to grade it. Hence my interest in applying a C-Log to Rec709 3D LUT to it. I'm not sure if it should be fullrange=false or true. I wanted to try both and look at the output visually when I noticed that fullrange=false gave black screen output.

[videoh]

OK, thanks. As I mentioned, I'll re-port the latest code.

[videoh]

Rather than upgrade to r2a I ported the fullrange fix only. Here is the revised version:

http://rationalqm.us/hdr/avscube_1.1.rar

[Stereodude]

Originally Posted by videoh

Rather than upgrade to r2a I ported the fullrange fix only. Here is the revised version:

http://rationalqm.us/hdr/avscube_1.1.rar

I get an error on both the x86 and x64 versions.

x64:
'C:/HDTV Tools/avscube/x64/vscube.dll' cannot be used as a plugin for AviSynth.

x86:
'C:/HDTV Tools/avscube/x86/vscube.dll' cannot be used as a plugin for AviSynth.

[videoh]

Hmm, that's strange. I will look into it. This doesn't happen with my version 1.0 DLL? What version of Avisynth+ are you using?

[Stereodude]

Originally Posted by videoh

Hmm, that's strange. I will look into it. This doesn't happen with my version 1.0 DLL? What version of Avisynth+ are you using?

No, the 1.0 version works fine in x64 & x86 (aside from the bug I reported earlier). I have AviSynth+ 0.1 (r2772, MT, x86_64) (0.1.0.0)

[videoh]

Somehow avscube.dll got excluded from the build after I updated VS 2017. I have fixed it. Please re-download to get the fixed version.

[FranceBB]

Originally Posted by videoh

Somehow avscube.dll got excluded from the build after I updated VS 2017. I have fixed it. Please re-download to get the fixed version.

Tested on WinXP SSE4.1 and it works fine with fullrange=true now.
Thanks again.

[Stereodude]

Originally Posted by videoh

Somehow avscube.dll got excluded from the build after I updated VS 2017. I have fixed it. Please re-download to get the fixed version.

Seems to be working okay with the updated version. No more black screen and the fullrange switch works.

[videoh]

Great. Thanks for your testing and for reporting the issue.

[FranceBB]

Hi Donald,
I'm resurrecting this topic as it seems to be the only one which is AVSCube related and I'd like to ask you something about it.
I've been using it all the time at work, in production, on my Xeon 28c/56th machines, but I'd like to speed things up a bit as all my server run fairly recent NVIDIA Quadro cards.
You're a developer, you know CUDA, you made many hardware accelerated plugins, are you tempted even just a little bit to make this CUDA accelerated as well?