MPC-HE (MPC-BE) - 16-255 to 0-255 (or to 16-235)

[rgr]

My camera records videos in the range of 16-255.
MPC recognizes this video as limited (16-235).
Can I add a shader to MPC that will convert the image to the range of 0-255 or even 16-235?

I found something that looks adaptable:
https://github.com/svn2github/MPC-BE/blob/master/distrib/Shaders/16-235%20to%200-255%2...D%5BHD%5D.hlsl

[jagabo]

You can turn the proc amp contrast setting down to -8. Keep in mind that everything else you watch will have the white level too low.

[rgr]

You can turn the proc amp contrast setting down to -8. Keep in mind that everything else you watch will have the white level too low.

Thanks.
Yes, I know. I plan to associate MPC-BE with mts files only, and MPC-HC with the rest.

[hello_hello]

I found something that looks adaptable:
https://github.com/svn2github/MPC-BE/blob/master/distrib/Shaders/16-235%20to%200-255%2...D%5BHD%5D.hlsl

I don't know about MPC-BE, but for MPC-HC those shaders come with the player and you can create presets for them.
I may have renamed the shaders themselves (I can't remember).


[Attachment 67233 - Click to enlarge]

The right click menu.


[Attachment 67234 - Click to enlarge]

Don't forget you can use MPC-HC as a portable version in a different folder, or as many times as you like.
I have it "installed" with the usual file associations and I've put shortcuts to portable versions with different settings in the Windows SendTo folder.
To make that work you need to make sure MPC-HC is saving it's settings to an ini file and not the the registry (except for one version, if you prefer).


[Attachment 67235 - Click to enlarge]

[rgr]

I found something that looks adaptable:
https://github.com/svn2github/MPC-BE/blob/master/distrib/Shaders/16-235%20to%200-255%2...D%5BHD%5D.hlsl

I don't know about MPC-BE, but for MPC-HC those shaders come with the player and you can create presets for them.
I may have renamed the shaders themselves (I can't remember).

I know this shader but I need 16-255(!) -> 0-255.

[flashandpan007]

Can you please upload a short sample file straight from your camera? I am curious about the videofile specs. Doesn't matter what is in the video of course, just a 15 seconds clip.

[rgr]

Ogólne
ID                                      : 0 (0x0)
Pełna ścieżka                           : C:\Users\Właściciel\Desktop\projekty video\2022-2\2022-05-14xx (GEM - mecz CLJ U15 Śląsk-Beniaminek)\2022_05_14 16_27_52.mts
Format                                  : BDAV
Format/Informacja                       : Blu-ray Video
Rozmiar pliku                           : 54,8 MiB
Czas trwania                            : 17s 455 ms
Rodzaj całkowitej przepływności bitów   : Zmienna
Całkowita przepływność bitów            : 26,3 Mb/s
Maksymalna całkowita przepływność bitów : 28,0 Mb/s
Data nagrania                           : 2022-05-14 16:27:52+02:00
Aplikacja zapisująca                    : Sony DSC-HX90V

Wideo
ID                                      : 4113 (0x1011)
ID menu                                 : 1 (0x1)
Format                                  : AVC
Format/Informacja                       : Advanced Video Codec
Profil formatu                          : High@L4.2
Ustawienia formatu                      : CABAC / 2 Ref Frames
Ustawienia formatu, CABAC               : Tak
Ustawienia formatu, poklatkowy          : 2 klatki
Format settings, GOP                    : M=1, N=15
ID kodeka                               : 27
Czas trwania                            : 17s 517 ms
Rodzaj przepływności                    : Zmienna
Przepływność bitów                      : 25,0 Mb/s
Przepływność maksymalna                 : 26,0 Mb/s
Szerokość                               : 1.920 pikseli
Wysokość                                : 1.080 pikseli
Proporcje obrazu                        : 16:9
Szybkość wyświetlania klatek            : 59,940 (60000/1001) kl/s
Color space                             : YUV
Chroma subsampling                      : 4:2:0
Bit depth                               : 8 bitów
Rodzaj skanu                            : Progresywny
bity/(piksele*ramki)                    : 0.201
Rozmiar strumienia                      : 52,3 MiB (95%)
IrisFNumber                             : 6.300000

Audio
ID                                      : 4352 (0x1100)
ID menu                                 : 1 (0x1)
Format                                  : AC-3
Format/Informacja                       : Audio Coding 3
Commercial name                         : Dolby Digital
ID kodeka                               : 129
Czas trwania                            : 17s 536 ms
Rodzaj przepływności                    : Stała
Przepływność bitów                      : 256 kb/s
Kanały                                  : 2 kanały
Channel layout                          : L R
Częstotliwość próbkowania               : 48,0 kHz
Szybkość wyświetlania klatek            : 31,250 kl/s (1536 SPF)
Compression mode                        : Lossy
Rozmiar strumienia                      : 548 KiB (1%)
Service kind                            : Complete Main

Tekst
ID                                      : 4608 (0x1200)
ID menu                                 : 1 (0x1)
Format                                  : PGS
ID kodeka                               : 144
Czas trwania                            : 16s 952 ms

(Screenshot after manually changing the color range from limited to full)

[jagabo]

I know this shader but I need 16-255(!) -> 0-255.

Attached is a shader for that. The trick is getting the rest of the system not to clamp the range first. And then everything else displays with the wrong levels.

[hello_hello]

I know this shader but I need 16-255(!) -> 0-255.

I missed that.

Does the camera support xvYCC? It uses the 1-15 and 241-254 range.
https://web.archive.org/web/20091209052016/http://www.sony.net/SonyInfo/technology/tec.../xvycc_01.html

Not that I know much about xvYCC and I don't think my video card supports it and I don't know how it's supposed to work when it isn't supported.

I downloaded a sample video from a site reviewing the camera, and aside from what appears to be god-awful dynamic contrast, the levels are as you described.

Original


[Attachment 67267 - Click to enlarge]

Reducing the whites to TV range looks better, but there's still clipping. I don't know if this video is typical though.
Levels(0,1.0,255,0,235, coring=false)


[Attachment 67268 - Click to enlarge]

I wonder if a full PC range to TV range conversion should be applied. For this video I think it looks better.
Levels(0,1.0,255,16,235, coring=false)


[Attachment 67269 - Click to enlarge]

[rgr]

I know this shader but I need 16-255(!) -> 0-255.

Attached is a shader for that. The trick is getting the rest of the system not to clamp the range first. And then everything else displays with the wrong levels.

Thanks. I will try.

[rgr]

I know this shader but I need 16-255(!) -> 0-255.

I missed that.

Does the camera support xvYCC? It uses the 1-15 and 241-254 range.

No, I don't think so.

[rgr]

I know this shader but I need 16-255(!) -> 0-255.

I missed that.

Does the camera support xvYCC? It uses the 1-15 and 241-254 range.

No, I don't think so.

But I found such information on the website.
https://www-sony-jp.translate.goog/cyber-shot/products/DSC-HX90V/spec.html?_x_tr_sl=au..._x_tr_pto=wapp
"A model that supports wide color gamut recording of still images/videos and HDMI wide color gamut transmission. Wide color gamut color space refers to still images: sRGB standard (color gamut sYCC), AdobeRGB standard, video: xvYCC standard."

[rgr]

video: xvYCC standard[/B]."

But I also found that "It is also supported by some cameras, like Sony HDR-CX405, that does actually tag the video as xvYCC with BT.709 inside Sony's XAVC".

But I don't record in XAVC.

[rgr]

I know this shader but I need 16-255(!) -> 0-255.

Attached is a shader for that. The trick is getting the rest of the system not to clamp the range first. And then everything else displays with the wrong levels.

Thanks. I will try.

Unfortunately, it doesn't work as it should.

File: should-be - This is what it should look like.
File: filter-on - this is what it looks like after the shader
File: filter-off - range 16-235 - superbrights (235-255) removed

Shader installed as DX11 after scaling.

[rgr]

Histogram:

[jagabo]

I know this shader but I need 16-255(!) -> 0-255.

Attached is a shader for that. The trick is getting the rest of the system not to clamp the range first. And then everything else displays with the wrong levels.

Thanks. I will try.

Unfortunately, it doesn't work as it should.

Actually, it does. The problem is the rest of MPCHC and the graphics card driver has to be set up correctly or the levels are clamped even before the shader gets the video. I don't remember exactly what I had to do but I think I had to set (in a few places) the output range to 16-235, or the input range to 0-255. But as I pointed out, if you do that all your other videos will play with the wrong levels.

[flashandpan007]

Can you please upload a short sample file straight from your camera? I am curious about the videofile specs. Doesn't matter what is in the video of course, just a 15 seconds clip.

Again, need sample file

[rgr]

Actually, it does. The problem is the rest of MPCHC and the graphics card driver has to be set up correctly or the levels are clamped even before the shader gets the video. I don't remember exactly what I had to do but I think I had to set (in a few places) the output range to 16-235, or the input range to 0-255. But as I pointed out, if you do that all your other videos will play with the wrong levels.

I don't see a way to set the player's input range to 0-255 (MPC-HC, MPC-BE).

[rgr]

Can you please upload a short sample file straight from your camera? I am curious about the videofile specs. Doesn't matter what is in the video of course, just a 15 seconds clip.

Again, need sample file

https://files.fm/u/h56e6pvjy

[jagabo]

Actually, it does. The problem is the rest of MPCHC and the graphics card driver has to be set up correctly or the levels are clamped even before the shader gets the video. I don't remember exactly what I had to do but I think I had to set (in a few places) the output range to 16-235, or the input range to 0-255. But as I pointed out, if you do that all your other videos will play with the wrong levels.

I don't see a way to set the player's input range to 0-255 (MPC-HC, MPC-BE).

Unfortunately, not all programs/drivers use the same terminology. Limited, Full, 0-255, 16-235, and they may be referring to the source or the output.

I'm using the integrated graphics built into my Intel CPU. For its driver he setting is here:


[Attachment 67572 - Click to enlarge]

Note there are different controls for the Desktop vs. Video -- I'm changing settings on the video tab here. I normally use the "Limited" setting because virtually all sources are limited range (DVD, BD, streaming services, etc.). I had to change it to the "Full" setting to prevent the levels being changed before the Shader in MPCHC. This may also depend on what output device you are using and whether or not you are using GPU decoding.

Here's the shader in action:


[Attachment 67573 - Click to enlarge]

The numbers in the chart refer to the Y values before being converted to RGB for display. You can see that all values at and below 16 are full black (R=G=B=0). But at the bright end of the scale you can differentiate the bars above Y=235. Actually, the picture at the high end is a little too bright. You may need to adjust the values a bit.

Sample video attached.

[rgr]

Unfortunately, there is no such option in the Radeon application.
But I was hoping something like this could be done at the application/decoder level.

[jagabo]

Unfortunately, there is no such option in the Radeon application.

Are you running the full driver/applet from AMD/ATI? Microsoft's drivers are often minimalist.

But I was hoping something like this could be done at the application/decoder level.

I already gave you one in my first reply in this thread.

[rgr]

But I was hoping something like this could be done at the application/decoder level.

I already gave you one in my first reply in this thread.

Yes, I know. But it doesn't work as it should, because the 235-255 range is removed first, and then the brightness is corrected. I get grayish instead of white.

[jagabo]

It works for me:


[Attachment 67627 - Click to enlarge]

Maybe you need to change some other setting in the program.

[rgr]

Ah, it works. I was mistakenly changing brightness instead of contrast.
The image is a bit brighter overall (luma 115* vs 117), but it is enough for viewing.
Thanks.

(I changed the contrast to -9 and it's a bit better now - luma 115 vs 114.6).

* - I made a pattern with the ffmpeg filter curves=master='0.0625/0 1/1'