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ABR

Adaptive Bitrate Streaming

A streaming technique that dynamically adjusts video quality based on the viewer's network conditions.

技术细节

Video processing of abr 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 abr is critical for balancing visual quality against bandwidth and storage constraints — a 1-minute 4K video at high quality can exceed 500 MB unoptimized.

示例

```html
<!-- ABR: 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>
```

Categories

ABR

技术细节

示例

相关工具

相关术语