DefinitionScalable Vector Graphics (SVG) is an XML-based vector image format for defining two-dimensional graphics, having support for interactivity and animation. The SVG specification is an open standard developed by the World Wide Web Consortium since 1999.
SVG images are defined in a vector graphics format and stored in XML text files. SVG...
What is Color Space?
DefinitionA color space is a specific organization of colors. In combination with color profiling supported by various physical devices, it supports reproducible representations of color – whether such representation entails an analog or a digital representation. A color space may be arbitrary, i.e. with physically realized colors assigned to a ...
HDR & Light Properties Matter
In a previous blog post, we discussed how to use a PRISM waveform monitor for color grading in a wide gamut environment. Here, we go back to the basics of human light perception and the impact it has on high dynamic range content creation.
Light manifests as both particles and waves, which means light does not need a medium for travel, unlike so...
A Brief Introduction to HDR
The history of High Dynamic Range (HDR)As I’ve mentioned previously, one thing we know to be constant in our industry is that there is always going to be change. We’ve moved from black and white to color to digital to HD, in the constant desire to bring higher and higher fidelity images to the home. This has never been more true than today. Talk...
VVC related News comes from streamingMedia
VVCRecent moves by Amazon and Dolby may hint at a growing interest in VVC (Versatile Video Coding).
Amazon’s Acquisition of MX PlayerOn Wednesday, June 5, Amazon agreed to acquire key assets of Indian video streaming service MX Player from Times Internet, reportedly in a bid to increase sales and brand awareness in India. As reported by TechCr...
What is CIE 1931 color space?
The CIE 1931 color spaces are the first defined quantitative links between distributions of wavelengths in the electromagnetic visible spectrum, and physiologically perceived colors in human color vision. The mathematical relationships that define these color spaces are essential tools for color management, important when dealing with color inks...
FFmpeg cmds collection
BriefThis article collected the common cmds of ffmpeg, it will continue to update, hope it is useful for you.
The common cmds of ffmpegffmpeg -i input.avi -pix_fmt rgb24 output.tiffffmpeg -i input.mkv -vcodec h264 -b:v 1.5M -acodec aac -b:a 48K output.mp4ffmpeg -i test.mp4 test.gifffmpeg -ss 00:00:10 -t 3 -i test.mp4 test.gifffmpeg -i test.mp4 ...
What is the difference between Rec.709, Rec.2020 and Rec.2100?
Color spaces play a critical role in digital imaging and video production, allowing consistent color representation across various devices. This blog post aims to shed light on three significant color spaces used in the film and broadcasting industry: Rec. 709, Rec. 2020, and Rec. 2100. We’ll examine what each color space represents and how they...
What is transfer functions?
Transfer FunctionsImages and videos use specific transfer functions to describe the relationship between electrical signal, scene light and displayed light.
DefinitionThe opto-electronic transfer function (OETF) is the transfer function having the scene light as input and converting into the picture or video signal as output. This is typical...
What is PQ?
Perceptual QuantizerThe perceptual quantizer (PQ), published by SMPTE as SMPTE ST 2084, is a transfer function that allows for HDR display by replacing the gamma curve used in SDR.It is capable of representing luminance level up to 10000 cd/m2 (nits) and down to 0.0001 nits.It was developed by Dolby and standardized in 2014 by SMPTE and als...