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.

Filter by
Sorted by
Tagged with
1
vote
0answers
18 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 ...
0
votes
0answers
6 views

Matching colors between editing apps and other Adobe apps

If I import graphics made in Adobe apps (Illustrator, Premiere, InDesign...) into After Effects or Premiere Pro, the exported animated file doesn't seem to respect the color space of these assets. ...
1
vote
1answer
14 views

What exactly is D-Cinelike?

My DJI Mavic Air drone has the ability to shoot video footage in either standard mode or “D-Cinelike”. Is D-Cinelike just a flatter colour profile with less contrast (to capture more detail in ...
0
votes
1answer
49 views

ffmpeg prores alpha channel not present when colormatrix and colorspace operations are performed

So I've figured out how to convert images to prores with no colorspace shifts using either: -vf colormatrix=bt601:bt709 filter for 8bit material and -vf colorspace=all=bt709:range=pc:format=...
0
votes
1answer
30 views

ffmpeg colormatrix operations only for 8bpc?

Unless I'm bad at reading, this page states that colormatrix is only good for 8 bpc. From Colorspace support in FFmpeg: ... colormatrix produces horrible quality for anything > 8bpc (8-bit per ...
0
votes
1answer
67 views

What is the file size difference between 8 bit and 10 bit raw video?

How much color information does a 8 bit pixel need compared to an 10 bit pixel? What is the difference. As an example how much file size would an single 640x480 frame take if had 10 bit color instead ...
0
votes
0answers
15 views

What would be size of an human vision color space?

10 Bit HDR is becoming a standard these days with H265 Blu Rays. But what if we decide to make CIE 1931 or CIELAB video? How much data is needed to register a colour in CIELAB? How much computing ...
0
votes
1answer
85 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 ...
0
votes
1answer
223 views

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 -...
0
votes
0answers
353 views

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 ...
0
votes
1answer
86 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 ...
1
vote
1answer
1k views

Is it safe to use the yuva420 pix_format option with ffmpeg to encode webm videos?

I am encoding png image sequences to both webm and mp4 formats using ffmpeg. My goal is to achieve perceptually lossless videos, with the smallest file size I can reasonably achieve. The webm videos ...
2
votes
2answers
344 views

Lossless color compression

I need to reduce the file size of an mp4 video. I don't need color information at all but pixel brightness resolution must be preserved. Videos consist of white background with a few (important) black ...
0
votes
1answer
109 views

Doubts about color spaces and chroma subsampling

Hy everyone, I have some questions about color spaces and chroma subsampling that I haven't been able to solve just by searching the web. Are YUV and YCbCr the same thing? When I take a look at the ...
6
votes
1answer
108 views

Why are there so many color spaces available?

Whatever you are exporting, photo or video, you can choose between an enormous amount of color spaces. sRGB, Adobe RGB 98, Apple RGB, and many more. But why there so many different color spaces? Do ...
5
votes
1answer
400 views

What is the colour range of most videos?

Colour range (Limited, Expanded) is something I've only thought of recently, and I'm worried I may have introduced colour banding into some of my videos. When doing a standard MP4 export from ffmpeg, ...
5
votes
1answer
3k views

Apply custom lut via ffmpeg?

I'd like to batch convert some log footage as well as transform each clip into rec709 colorspace. Is there any way to apply a custom lut to the footage? If so, what's the correct way to do that?
0
votes
1answer
85 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 ...
1
vote
1answer
4k views

FFmpeg BMP to YUV x264 color shift

When I encode a particular sequence of BMP image files to AVC/H.264, the colors get shifted. Why does this happen? But if I convert the BMPs to PNGs before running ffmpeg, the video conversion ...
1
vote
0answers
386 views

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 ...
2
votes
3answers
516 views

Working in a linearized Color Space in After Effects causes hard gradients

I am just playing arround with the new trapcode suite in after effects working ina linearized color space for a better control over color and effects. Somehow I get really bad rendering on parts of ...
1
vote
1answer
747 views

Convert sRGB color to linear Color Space

Just wondering if there is a simple and fast way to convert a specific color from my Illustrator layout file (#e3000b) to a linear Color Space. I am working in After Effects in a linear color space. ...
11
votes
1answer
10k views

ffmpeg: explicitly tag h.264 as bt.601, rather than leaving unspecified?

I want to tag video as explicitly bt.601, rather than "unspecified". I know players typically choose bt.601 as the default for videos less than 1280 pixels wide, but I want to make it explicit that ...
3
votes
2answers
2k views

ffmpeg bgr vs rgb and other similiar pixel formats

I was wondering about the difference between rgb and bgr pixel formats available in many codecs. It reminds me in some way the Big Endian and Little Endian flavours of computer processors. While I ...
3
votes
1answer
2k views

Record raw video with ffmpeg keeping the full color range

I want to do video captures with a video4linux2 device. The video data contains a lot of darker shades of grey. When I capture a single PNG file, everything is fine. Capturing with ffmpeg/avconf ...
8
votes
4answers
5k views

Do any iOS video apps record in log color space?

Is there an app for iPhone or iPad that will let me record log color space video? It seems like with such an abundance of instagram-ish "filter" apps, developers probably have access to raw sensor ...
7
votes
1answer
12k views

ffmpeg pixel format definitions

ffmpeg -pix_fmts lists many pixel formats. In my ffmpeg, there are 66 different pixel formats that start with yuv. A few of them are familiar to me (e.g., yuv422p), but most of them are not (e.g., ...
4
votes
2answers
4k views

Colors look different after export

Colors look great in FCPX. After I export (Share > Master file > H.264 Quicktime) they look a bit dull: desaturated, less vibrant. Also sort of like the wrong gamma curve - shadows are darker. I ...
6
votes
1answer
984 views

Downsampling 4K footage for an increase in chroma sub-sampling

We have a Lumix GH-4 camera, which can shoot in 4K with 4:2:2 color space. I'd like to be able to convert the footage to 1080p 4:4:4 color space. I've read that there some ways of doing this: http://...