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9 votes
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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 ...
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8 votes
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why movie video is different from other videos (sports, news, or other)

Movies have certain "looks" to arouse certain moods. The lightning and color depends on the intention of the movie and each individual scene. Let's take the picture you linked as an example: The ...
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6 votes
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ffmpeg: white padding is light grey but not white

The end of the filter chain should output full RGB, like this: Windows batch: ffmpeg.exe -i "https://gooseberry.blender.org/wp-content/uploads/2014/01/franck.jpg" ^ -filter_complex ^ scale=iw*...
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5 votes

What is the colour range of most videos?

Most videos are limited range i.e. luma goes from 16 to 235, and chroma from 16 to 240. Unless expressly set, FFmpeg does not scale the range from one to another. Whatever the source is, that's the ...
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5 votes

How to color grade gold

Two thoughts: Go to images.google.com and search for "gold". Find something you think is gold-colored, check its RGB values, and then use that as a target for your gold. Many editing programs have ...
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4 votes
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Color calibration with a color chart

I'm not aware of any that work directly in Premiere, however I can use my Spyder Checkr24 to either adjust my videos in Adobe Lightroom or DaVinci Resolve. For Lightroom, I use the software that came ...
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4 votes
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Why are there so many color spaces available?

There are a number of reasons why there are so many color spaces: Color resolution - sRGB and similar color spaces only cover a portion of the visible spectrum. This means that they can be ...
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  • 2,146
3 votes

Software used for Film Colourization

From the youtube video description you linked: The in-house developed and customized cutting edge software tools provide better image quality and colors very close to the original.
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3 votes
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ffmpeg bgr vs rgb and other similiar pixel formats

The order of the components in RGB32 seems to do with endianness: PIX_FMT_RGB32 is handled in an endian-specific manner. An RGBA color is put together as: (A << 24) | (R << 16) | (G &...
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3 votes

ffmpeg bgr vs rgb and other similiar pixel formats

While I always guessed that the big / little endian was more a matter of patents rather than performance, Nope little endian was developed as a performance optimization whern moving to multi byte ...
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3 votes
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Is 4K good enough to choose for special footage such as weddings?

Where are you planning on exhibiting the footage? In my experience, the average consumer has a low-quality TV they bought because of the price, and they have the factory settings that look awful ...
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3 votes
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Is wide-gamut video primarily an increase in saturation (for the layperson)?

Wide Gamut color space is primarily just an expanded color space that is capable of covering a larger range of values in the visible color spectrum. This, compared to sRGB and Adobe RGB. The gamma ...
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3 votes
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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 ...
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2 votes

Is there a program that can change monitor color temperature for lighting?

If you can't adjust the monitor, then send it something other than pure white. @poor already posted an answer to do this with Blender, but that seems like HUGE overkill. I would have just booted ...
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2 votes

Is there a program that can change monitor color temperature for lighting?

Here is a hack. You can use Blender and the Blackbody Node of Cycles Render Engine. Following example shows a realtime viewport animation of the color temperature in kelvin: Create some geometry (e.g....
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  • 2,269
2 votes

Relationship between bit depth and dynamic range?

Dynamic range is the difference between extreme light and extreme dark, whereas bit depth defines the number of steps in between. There is a practical relationship between the two, not a theoretical: ...
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2 votes

Relationship between bit depth and dynamic range?

More bits mean more possible values for each channel. So each channel in an 8 bit image has 256 possible values, from 0 to 255, while a 10 bit channel has 4 times as many: 0 to 1024. Dynamic range ...
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2 votes
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How can I generate a color-correct h264/MP4 from a DPX sequence using ffmpeg?

I followed up on the yuv420p(tv, bt709) portion of the encoding and discovered that this refers to the Rec. 709 colorspace for HDTV. In ffmpeg, colorspace is defined by the colormatrix filter. However,...
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2 votes
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How to change every black pixel to a special color?

You can use the LUT or GEQ filters for this. e.g. with LUT ffmpeg -i myVideo.avi -vf "yadif,format=rgb24, lutrgb=r='if(eq(val,0),3,val)':g='if(eq(val,0),3,val)':b='if(eq(val,0)...
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2 votes

Software used for Film Colourization

When colorizing film, filmmaker's will use a variety of commercial and custom developed tools. That mix of tools is often treated as proprietary information and is not widely discussed. For example, ...
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2 votes

How to read 10-bit RGB values from HDR video?

The ProRes input will have YUV encoding, not RGB. If you need a raw dump, save as rawvideo. ffmpeg -i in.mov -f rawvideo raw.yuv Note that bit depths which aren't multiples of 8 are still stored in ...
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2 votes
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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, ...
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  • 1,055
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 ...
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2 votes

Should color grading be performed on raw clips, or final sequence?

Grading multiple clips in Premiere is still a bit fiddly compared to something like DaVinci Resolve. If it was only three clips, I would do the grade on one clip, then copy and paste the Lumetri ...
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2 votes

How do I get a totally consistent white tabletop background?

That's interesting. Just tried it with locked AF/AE in the camera app as you showed, and it definitely is adjusting the white background even though the focus and exposure are supposed to be locked. ...
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1 vote

Premiere Pro CS6: how to change color of a clip as time progresses?

There are several ways to do this. The basic idea is always the same: You overlay a color and then animate it's hue. To get rid of all other color, you can either convert the footage to black-and-...
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  • 5,382
1 vote

Why is YouTube and VLC making a slight but noticeable mess of my video background?

This is a problem that drove me crazy... Long story short; certain browsers; whether it's Chrome, Explorer, Firefox, etc, actually handle color profiles, embedded within the video file (such as color ...
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1 vote

What is the difference between RGB and RGB + Alpha?

The alpha channel is a grayscale 2D image plane of the same size as the RGB image, and is used when overlaying (or blending) the image on top of another image. If the value of an alpha pixel is zero, ...
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1 vote

Dark Video/Gama Shift from Davinci Resolve to YouTube

The MOV you exported from Resolve is tagged as Rec 601 (despite being UHD). So, I transcoded your MOV using the command below, preserving all color characteristics and uploaded that to Youtube. ...
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1 vote

Graphics card and video codecs: are colors stored in a linear scale?

The correctness of this statement depends on the color model. The statement will typically be correct for color models such as RGB and CMY. In HSx (HSV, HSL) color models the model doesn't store ...
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