WebM

Overview

WebM is an open media container designed for the web, typically pairing VP9 or AV1 video with Opus audio. It is royalty-free and supported by all modern browsers, which makes it a popular choice for open-source streaming and GIF replacement.

Typical use cases

• Web video
• Open-source streaming
• GIF replacement
• Short-form web clips

Advantages

• Designed for web video
• Lossy or lossless storage
• Open specification
• Browser support: All modern browsers

Disadvantages

• Older iOS Safari lacks full support
• Not supported by some desktop players
• Codec choice affects compatibility

How to open or use it

Open WebM files with an application that supports video/webm. Editing in open video tools. For delivery, use a viewer or converter that reads webm.