B-Frame — อภิธานศัพท์

A video frame that references both preceding and following frames for highly efficient compression.

รายละเอียดทางเทคนิค

Video processing of b-frame 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 b-frame 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
<!-- B-Frame: 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 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 CBR VBR DASH HLS Motion Estimation Video Codec AV1 H.264 H.265 Timecode Pillarboxing Proxy Editing LUT Frame Blending Optical Flow