Questions tagged [colorspace]

An RGB color space is any additive color space based on the RGB color model. A particular RGB color space is defined by the three chromaticities of the red, green, and blue additive primaries, and can produce any chromaticity that is the triangle defined by those primary colors. The complete specification of an RGB color space also requires a white point chromaticity and a gamma correction curve.

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Do you always need to convert videos with a YUV color space for compositing in Blender?

I have a 10 bits .mov file with YUV color space encoded prores 422HQ of some green screen footage. -Do we always need to convert videos with a YUV color space for compositing work? If I want to ...
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Why has grayscale a higher bitrate than YUV with H.265/HEVC?

For compression purposes, I am re‐encoding a grayscale video to the H.265/HEVC codec. Although the input video is more or less perfectly grayscale in aspect, it is provided in the yuv420p pixel format....
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326 views

ffmpeg ProRes to MP4 Alters Colors Slightly

I cannot for the life of me figure out what is going wrong, but I have a ProRes MOV file with the following specifications: And I want to convert it to a 4:2:0 MP4 video file. Every time I attempt ...
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ffmpeg: color loss when encoding to .webm

When encoding to webm (specifically VP8, i.e. libvpx), the color range gets reduced from 0-255 to 15-235. This causes a washed-out look; blacks become faded and not as sharp. I have found solutions ...
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MPC-HC is altering the colors

In order to test a lossless recording system, I have to verify that the input video is exactly the same than the output video. As a test source I have generated an ffmpeg's testsrc pattern, which is ...
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recording uncompressed or > 150000 kb/S video on a smartphone or tablet

Is it possible to record uncompressed or > 150000 kb/S video on a smartphone or tablet? If so, how and what devices are compatible? I am able to do this with cheap logitech webcams, however the ...
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Why does my ipad/macbook video camera quality not match logitech hd c270 quality?

I am trying to write a program that takes a video of someone's face, extracts the RGB values, and then uses the color change (imperceptible to the human eye) to map onto heart rate. When I use a ...
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Correctly compositing linear RGB elements over log footage

I have some water splash elements I need to composite over log footage in After Effects before sending it to the colorist for grading. As I understand, the correct workflow is to convert the log ...
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2k views

Color changes after video to single frame images back to video using ffmpeg

Given master video in mov rle: Video: qtrle (rle / 0x20656C72), rgb24(progressive) Converted the video to a serie of single .bmp frames. ffmpeg -i source.mov $FRAMES/f%03d.bmp Frames from ...
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Color shift FFmpeg raw RGBA images to YUV format

I have a list of raw bitmap in rgba format, captured with an openGL frameBuffer. I want to export them in a video, currently i am using the following command: ffmpeg -f rawvideo -r 30 -pix_fmt rgba -...
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655 views

Generating video thumbnails preview / contact sheet in batch, color issue

I have a large collection of videos to sort out, and for that purpose I want to create a thumbnail preview for each one of them, as quickly and efficiently as possible. I have tested several tools ...
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102 views

Matching colors for video

It appears that loading a graphics asset into Premiere’s new (2017.1) layered drawing tools does not do any kind of profile matching. Furthermore, the play preview image looks different on my (color ...