54
votes
Accepted
ffmpeg Color Correction: Gamma, Brightness and Saturation
These settings helped me to lighten up a dark video using the filter eq, with some added saturation.
Syntax:
filtername=option1=value1:option2=value2:option3=value3... These can be in any order.
...
- 1,793
20
votes
ffmpeg Color Correction: Gamma, Brightness and Saturation
Gamma correction is likely to be a better choice than brightness, to stretch the histogram to the right rather than push it over:
# tinker with numbers
ffplay -vf eq=gamma=1.5:saturation=1.3 original....
- 301
14
votes
ffmpeg Color Correction: Gamma, Brightness and Saturation
I'd also try curves:
ffmpeg -i input.vid -vf "curves=all='0/0 0.5/1 1/1'" -codec:a copy -codec:v libx264 -y output.vid
The 0.5/1 maps mid-range brightness (0.5) to full bright (1)
- 241
9
votes
Accepted
Leaving white balance for post-processing. Is it a bad idea?
Don't do white balance in post, you will regret it. The problem is that the footage your camera records is compressed. That means the sensor information is not stored in RAW, but encoded using lossy ...
- 5,452
6
votes
Accepted
How to combine ffmpeg vf commands for resizing and color correction?
Filter complex isn't needed. When a series of filters are to be applied to a single input in sequence, they are to be separated with a comma and passed along as a single filterchain (-vf, -af). You ...
- 33.6k
5
votes
What are Grey Balls used for?
Yes, they are used for adding visual effects in post. The mirrored ball is for creating an environment map or reflection map. These maps provide the same lighting from the real scene to the virtual ...
- 2,156
5
votes
Accepted
ffmpeg vf scale shifts colors to washed out
The video's color transfer characteristics (trc) and color primaries flags are not being set on the output video, which is causing the video player to use incorrect values for playback, resulting in ...
- 361
3
votes
Accepted
Correct gamma for SMPTE ST-2084 EOTF
The short answer is: You don't pick a color space for your RAW material based on what kind of monitor you're using.
A color pipeline is a very complicated series of mathematical conversions, which is ...
- 4,534
3
votes
Accepted
Color correct to compensate for low blue
I am not very certain that I understand your question, but if you want to shift the color-grade of your image away from the orange, you can use the temperature to shift it towards blue, effectively ...
- 2,705
3
votes
Accepted
Davinci Resolve 15 - color correction of whole tracks
A couple of ways you can do this. My faforite is groups. In the color page, do this:
Shift click all of the clips you want to color correct at the same time. You can limit the clips shown on the ...
- 4,534
3
votes
Color grading basics
I would look at some of the tutorials on YouTube. There are plenty of them.
If you want to get into grading; you can jump right in as long as you are shooting RAW; or at the very least; 4:2:2.
If ...
- 2,487
3
votes
Accepted
What are Grey Balls used for?
The grey balls are actually used like the grey cards but with added lighting data cause they are spherical and refer to the surrounding light sources better, they usually reflect 18% of the light and ...
- 146
3
votes
Accepted
Change color to look as how a color blind person sees
With these values, I get the results shown below. Note that your color management settings in Resolve will affect your result, and so will the input color space of your source. To avoid ...
- 4,534
2
votes
How to colorise black and white movies?
Convert movie to pictures (1 second = 24 pictures ; so 1 hour = 86,400 pictures ; average 90 min. movie = 129,600 pictures). Colorize every individual picture using the DeepLearning API which gives ...
- 21
2
votes
White balance auto-adjusted half way through recording
A1: Links like these mention that ProRes 'bakes in' the white balance (as opposed to storing it as separate metadata): blackmagicdesign.com forum ; reduser.net forum ; reduser.net forum ; ...
- 141
2
votes
Accepted
Why use Lumetri scopes?
The scopes are objective and absolute measures of the levels in your image. They aren't susceptible to the vagaries of human perception—colours and levels looking different depending on context—and ...
- 13.8k
2
votes
Source ProRes 422 Proxy / Edit / Export to ProRes 422 proxy?
Definitely proRes 422HQ.
While you won't gain anything by encoding in a higher quality codec, what you will do is avoid losing more.
Proxy codecs are just that: stand-ins for the real content, ...
- 13.8k
2
votes
Accepted
Why a color grading suite needs high CRI lamps?
The truth is that you do not need them... unless you do of course.
You only need good CRI for the ambient lamps if you need to compare colors with real-life things, probably the skin tone of someone, ...
- 1,202
2
votes
Accepted
White balance vs color correction
Regarding the standard procedure, the short version is:
get the colour looking correct but neutral, which is when you do corrections for white balance and exposure problems. The footage will look &...
- 13.8k
2
votes
Manual white-balance for non-neutral lighting
You're doing it wrong. For one, the 18% grey card is for exposure, use a white card for white balance. For two, the whole point of the white / grey card is that you expose it under the lighting ...
- 13.8k
2
votes
Recovering from an Automatic White Balanced mishap
DaVinci Resolve is industry standard for colour grading. However if you don’t need very special and specific functions in DaVinci Resolve, you can do the grading in FCP as well. In your situation I ...
- 737
2
votes
Accepted
What are brightness, gamma, and lut filters doing to my video? What's the difference, which should I prefer?
Here's what all these settings do, typically. Some pieces of software define or apply them differently, but this should give a general idea.
Brightness simply changes the brightness value of each ...
- 266
1
vote
Even out fluctuating exposure on old video
You could try GBDeflicker to see if it improves the footage.
They have a free demo. It is designed for smoothing out time-lapses (and is good at this), but it might work on archive video?
- 8,162
1
vote
How can I create a LUT on Linux with free and open source software?
I was looking for that kind of software as well.
Then I found the .cube specification.
I thought to myself ... an average programmer should be able to do it in a couple of days ... and then I did the ...
- 111
1
vote
Accepted
Apply the parameters of automatic color balance to another clip
Unfortunately the settings are not visible when you use automatic colour grading. AFAIK what the algorithm does can’t be replicated on another clip.
To be honest I would not use automatic for what I ...
- 737
1
vote
Davinci Resolve 15 - color correction of whole tracks
Just color correct one clip according to your specifications and then select that clip first and then all other which you want to have the same color correction. To select the other clips you can do ...
1
vote
Color-correcting super 8 video from 1975
Play with color corrector controls. Use "High" control to adjust snow to the tint you prefer, use "Mid" and "Low" to adjust face and hat. As you see, I moved "High" and "Mid" to the green/blue zone to ...
- 494
1
vote
Accepted
Reapply video color autocorrection
If you want the “best possible results” I would recommend the following workflow, or similar variation thereof:
Export your captured video source to a JPG Image Sequence. This will create a JPG for ...
- 2,487
1
vote
Color Correction filter to dull/desaturate Video
If you do a primary color correction on your video to get it normalized (this is assuming your footage looks correct in terms of exposure, white balance, etc); I'd add the following filters to achieve ...
- 2,487
1
vote
Unhappy with wedding videography production - want expert opinions to provide an independant view
This is going to be a hard one. I am a wedding videographer myself and there isn't really a guild or similar (well there is kind of but there are no requirement to be joined to one in the UK).
Now ...
- 1,284
Only top scored, non community-wiki answers of a minimum length are eligible