Video - Frame

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A frame is an image (picture) that is found in a serie of image creating a video (motion).

Frame can also be generated between two frames called keyframe to create a smooth animation with less frame.

Each application has a rate that tells how many frame it can render per second called fps (or frame per second). Typically, this rate should be equal or greater to the refresh rate of the display otherwise the content can judder on screen (often referred to as jank).

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Browser - Rendering

Rendering is a page load phase that consists of generating an output that can be read by the client. Render tree building stage: The CSSOM and DOM trees are combined into a render tree. Before the...
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Display - Refresh Rate (hz)

The Refresh Rate is the number of times in a second that a display refresh the screen by redrawing the content of its buffer. Most devices today refresh their screens 60 times a second (60 Hz). An application...
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How to extract the images of a video (ie frame) with ffmpeg ?

This article shows you how to extract the frame (picture) of a video Once you have installed ffmpeg, you can execute the following command. To encode a movie to frame (single pictures) sampled...
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How to resize images in a directory with ffmpeg ?

This article shows you how to scale image in a dirctory with ffmpeg and conserve the aspect ratio. Because ffmpeg is a video management tool, it can also modify a frame, in other word, an image. ...
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Video / Motion / Animation / Film

A video is : a sequence of image called frame shown at the frequency called frequence rate (per second) compressed to follow a bitrate. Movies at first were called moving pictures. A good example...
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What is ffmpeg ?

What is ffmpeg ? ffmpeg is a command line to record, convert and stream audio and video. This is the simple tool to manipulate and convert any video. * * * * * * FFmpeg...
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Video - Frame per Second

Frame rate (expressed in frames per second or fps) is the frequency/speed (rate) at which consecutive images called frames appear on a display. The term applies equally to film and video cameras, computer...
Devtool Chrome Performance Frames
requestAnimationFrame Web Api

requestAnimationFrame is a window function that permits to run code when a frame is going to be painted. Avoiding layout shift. For instance, when you create a fixed top bar, you need to set two...

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