something like this:

http://www.rumblehouse.c...ope-histogram-sdk-basic/


would be nice on Vmix :)


Cheers,

PFBM

Video analysis tools such as waveforms and vectorscopes are so technical, users almost need a video engineering degree to understand them!

Perhaps if you guys could discuss what readings you typically look for I can build some specific easy to use indicators.
For example, a simple RGB bar graph showing the relative weight of each colours intensity may be a easy alternative to a vectorscope.

One reason for this is performance, the rumblehouse sdk uses 60%+ CPU, so this would not be practical for vMix.
Simple indicators on the other hand might be easier to implement.

Regards,

Martin
vMix

hi martin,

just started playing around with my new bm pocket cinema camera and recording in log raw film mode. this requires color grading and i am on a steep learning curve using al kinds of color grading tools. so i know what you mean with engineering degree....

maybe some of the tools and ideas behind simple color grading could somehow be added to vmix. i am referring to the technique of using LUTs: a Look Up Table. this is simply a table which translates color values to a desired output and will act as a quick way to apply a desired color grading effect.

maybe this is a good alterative for the more active color grading as proposed, because the lut is the result of this active proces in a different program and therefor a simple to aply translation of the incomming signal.

this would also have the benefit that vmix can be used with various bm cameras such as the bmpcc or the bm studio camera when a raw output is input in vmix and this input needs to be graded. a set of preset luts could be provided and users can make their own, p.e using the free bm color grading light tool davinci resolve light...

greetings,
stefan

It would be amazing to apply LUTs to cameras input!
Often we use different cams and they can't match, i see this problem on so many webcasts!

Workflow would be:
1-White ballance all your cams
2-frame on X-Rite Original ColorChecker Card
3-multicorder
4-import recordings to DaVinci Resolve 11 (lite is free) and create LUT for each cams
5-apply LUTs to vMix inputs

I agree LUT module maybe hard to implement... maybe not so hard?

CPU intensive? yes if no GPU is used! In Premiere Pro with i7 4.4 Ghz GTX 660 Lumetri using a LUT if
GPU enabled:No impact on CPU add about 10% to GPU
GPU disabled:about 80% on CPU add 0% to GPU

obviously it require GPU processing!

I found this on the net about LUT using DirectX i understand it's running arount 2000fps when processing!
http://coherent-labs.com...o-lut-for-color-grading/
And this about using OpenGl to apply LUTs
http://http.developer.nv.../gpugems2_chapter24.html

Daniel

hey I just found out that there is a vectorscope on the black magic shuttle input.

I connected my vmix set through the hdmi output (second screen) to the shuttle connected to an apple with FMLE (fro streaming). But when you select the settings button next to the input in FMLE you get a screen where you can select all kinds of scopes and RGB parades and all that.

From VMIX you can selet what output to send to the seond screen, so you can send any input and view the scopes.

Maybe this is a quickfix to test/

Stefan

Have you got your 2 Sony HDRCX900 to behave properly?
I look to buy some base on my good results of the X70... have you compare both?
Are they really same base HW?

Since many things are requested in the same topic, i would like to +1 some and add some more:

+1 for LUTS, i think this would not use a lot of cpu and would be a great addition. We recently bought a couple of A7s cams (for low light shooting at concerts), it would be kick ass to use SLOG and do realtime grading with LUT's to get a super nice look :) I was looking now at those LUT boxes from AJA, but they're expensive, and it would be almost impossible to change looks during a production.


+ 1 for some kind of color indication (histogram is the easies to read in my opinion), we also mix a lot of different camera's into our production, it would be nice if we can mix-match them better, since it's almost impossible to do this in post when long fades are used.

+ 1 for more color correction options: Gamma curves like used in premiere or lightroom would be very nice. Most of the times i can get the colors to match more or less, but shadows and highlights are often completely different depending on the camera. Right now we make matching colorprofiles in some of our camera's, but with changing light conditions (recordings starting during the day, ending at night for example) it's not easy to keep a good color match. Adjusting on the pc during the recording would be awesome. Also: we mix intensity pro with intensity pro 4K cards, and the 4K cards render color a bit different (more contrast), it's almost impossible to fix this inside the camera, it would be great if it could be done in VMIX.

Also: what would be a huge one is the ability to load directshow filters. There are some great ones free of charge or at low prices on the internet, this would make the options endless.

I think both the indication of color, and the ability to match better and use filters, would greatly improve our productions. We could then deliver productions with a way better look and feel to clients, right out of the box, with minimal effort. It would for sure open up market for more high end productions that would be almost impossible to do now even for the guys with expensive hardware mixers.

Just one implementation proposition: what would be perfect, is to have some kind of color correction panel that can be used in a seperate window with seperate controls. This could introduce the role of a shader into productions. You now often see this inside big productions, that one guy is just in charge of the colors.