WebM Sample Files
WebM is an open video format developed by Google. It uses VP9 video and Opus audio codecs, and is supported natively by Chrome, Firefox, and Edge. WebM files are commonly used for HTML5 video on the web.
Back to Example video files
Download WebM Sample Files
| File | File type | File size | Resolution | Mime type | Aspect ratio | Length | Codec | Download example file |
|---|---|---|---|---|---|---|---|---|
| WebM Sample - 720p 5 Seconds | WebM | 575 KB | 1280 x 720 (720p) | video/webm | 16:9 | 0:05 | VP9 + Opus | Download example file |
What is a WebM file?
WebM is an open, royalty-free media format built for the web. It pairs the VP8 or VP9 video codec with Vorbis or Opus audio. Because it carries no licensing cost and is supported by every modern browser, WebM is a popular choice for open-source projects and for serving video efficiently on the web.
How this sample WebM file was made
The sample is generated with FFmpeg from a moving test pattern, encoded as VP9 video at a 1 Mbps target bitrate with an Opus audio track. The five-second 720p clip is only around 0.5 MB, which shows how much more efficiently VP9 compresses than older codecs at the same resolution.
Technical details
VP9 offers significantly better compression than H.264 at a comparable quality level, so WebM files are usually smaller. The trade-off is that some older devices and editing tools do not support it, so WebM is best used as a web delivery format with an MP4 fallback.
Common uses
Use this file to test HTML5 <video> with a WebM source, to compare codec efficiency against an MP4 of the same resolution, or to test open-source playback pipelines.