Chroma Key
Chroma Key Compositing
A technique replacing a solid-color background (green screen) with another image or video.
Détail technique
Video processing of chroma key involves multiple interdependent parameters: codec, container, resolution, frame rate, bitrate, color space, and audio track configuration. The MediaSource Extensions (MSE) API enables adaptive streaming in browsers, while the WebCodecs API provides low-level access to hardware encoders/decoders. Understanding chroma key is critical for balancing visual quality against bandwidth and storage constraints — a 1-minute 4K video at high quality can exceed 500 MB unoptimized.
Exemple
```html <!-- Chroma Key: HTML5 video with format fallback --> <video controls preload="metadata"> <source src="video.webm" type="video/webm; codecs=vp9,opus"> <source src="video.mp4" type="video/mp4"> Your browser does not support HTML5 video. </video> ```
Outils associés
R
Resolution Reference
B
Bitrate Calculator
F
Frame Rate Converter
T
Timecode Calculator
A
Aspect Ratio Calculator
F
File Size Estimator
S
Speed & Slow-Mo Calculator
S
Storage Planner
S
Subtitle Time Converter
B
Bandwidth Calculator
C
Color Space Reference
C
Codec Reference
P
Platform Specs Guide
C
Chroma Subsampling Guide
K
Key & Scale Reference
S
Screen Recording Guide
Termes associés
Chroma Subsampling
Frame Rate
Container Format
Transcoding
Keyframe
Interlacing
Subtitle
Trimming
Muxing
CRF
B-Frame
GOP
Deinterlacing
Letterboxing
Two-Pass Encoding
ABR
Color Grading
Stabilization
Bitrate (Video)
I-Frame
P-Frame
HDR10
Dolby Vision
HLG
Rec. 709
Rec. 2020
VFR
CFR
CBR
VBR
DASH
HLS
Motion Estimation
Video Codec
AV1
H.264
H.265
Timecode
Pillarboxing
Proxy Editing
LUT
Frame Blending
Optical Flow
Key Derivation
Public Key