WebM 视频
WebM 是由 Google 为网络开发的开放、免版税视频格式。它在基于 Matroska 的容器中使用 VP8、VP9 或 AV1 视频编解码器以及 Vorbis 或 Opus 音频。WebM 在 Chrome、Firefox、Edge 和 Android 上均有原生支持。
MIME 类型
video/webm
类型
二进制
压缩
有损
优点
- + Completely open source and royalty-free
- + VP9 and AV1 offer excellent compression efficiency
- + Native browser support in Chrome, Firefox, Edge, and Opera
- + Opus audio provides superior quality at low bitrates
缺点
- − Not natively supported on Safari (pre-2020) or older Apple devices
- − Smaller ecosystem of editing tools compared to MP4
- − AV1 encoding is very slow compared to H.264
何时使用 .WEBM
当需要使用免版税编解码器的网络视频时，使用 WebM，尤其是搭配 VP9 或 AV1 可获得出色的质量与码率比。
技术细节
WebM 是 Matroska 容器的一个配置文件，仅限于 VP8/VP9/AV1 视频和 Vorbis/Opus 音频。它使用 EBML 二进制标记，专为低开销的网络流媒体设计。
历史
Google 在 2010 年收购 On2 Technologies 并开源 VP8 后推出了 WebM。VP9 于 2013 年推出，AV1（由开放媒体联盟开发）于 2018 年加入。
从 .WEBM 转换
转换为 .WEBM
相关格式
相关术语
Learn More
Video Codecs Explained: H.264, H.265, VP9, and AV1
Video codecs determine file size, quality, and compatibility. This guide compares the major codecs, from the ubiquitous H.264 to the …
How to Compress Video for Web Streaming
Properly compressed video loads faster, buffers less, and saves bandwidth. Learn how to find the sweet spot between quality and …
How to Create GIFs From Video Clips
GIFs remain popular for short animations, tutorials, and social media despite their technical limitations. This guide covers how to create …
Best Practices for Video Thumbnails and Previews
Thumbnails are the first thing viewers see and directly impact click-through rates. Learn how to create effective video thumbnails and …
Troubleshooting Video Encoding Errors
Video encoding failures, quality issues, and compatibility problems can be frustrating to debug. This guide covers the most common encoding …
Container Formats Explained: MP4, MKV, WebM, and MOV
Container formats wrap video, audio, and metadata into a single file. Understanding the difference between MP4, MKV, WebM, and MOV …