CBR
Constant Bitrate
A video encoding mode maintaining a fixed data rate throughout, providing predictable file sizes and bandwidth usage.
รายละเอียดทางเทคนิค
Video processing of cbr 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 cbr is critical for balancing visual quality against bandwidth and storage constraints — a 1-minute 4K video at high quality can exceed 500 MB unoptimized.
ตัวอย่าง
```html <!-- CBR: 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> ```
เครื่องมือที่เกี่ยวข้อง
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
S
Screen Recording Guide
คำศัพท์ที่เกี่ยวข้อง
Frame Rate
Container Format
Transcoding
Keyframe
Interlacing
Subtitle
Trimming
Muxing
CRF
B-Frame
GOP
Deinterlacing
Chroma Key
Letterboxing
Two-Pass Encoding
ABR
Color Grading
Stabilization
Bitrate (Video)
I-Frame
P-Frame
HDR10
Dolby Vision
HLG
Rec. 709
Rec. 2020
VFR
CFR
VBR
DASH
HLS
Motion Estimation
Video Codec
AV1
H.264
H.265
Timecode
Pillarboxing
Proxy Editing
LUT
Frame Blending
Optical Flow