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About

Bitrail publishes synthetic video for testing players, packagers, caches and CDN configurations. It exists because every team ends up building the same set of test files, badly, in a hurry, from whatever footage happened to be lying around.

Why free, and how it stays that way

The whole site is static files. There is no database, no account system and no per-request work beyond reading from disk, so the marginal cost of another download is bandwidth and nothing else. That is cheap enough not to meter and simple enough not to break.

The content is CC0 and the site source is MIT. Mirror it, vendor it into your own test rig, or generate your own assets with the same script — that is a better outcome than depending on somebody else's origin in CI.

What it is not

Not a CDN, not a hosting service, and not a place to put your own files. There is no upload path.

Not a benchmark authority either. The speed test measures one transfer from one origin to one client; treat it as a sanity check, not as a number to publish.

Reproducing the assets

Everything served here is produced by tools/make-assets.sh in the site repository, using ffmpeg and nothing else. Given the same ffmpeg build it reproduces the files byte for byte, which is the point: if you need certainty rather than convenience, generate them yourself and skip the network entirely.

Privacy

No analytics, no cookies, no third-party requests. The pages load one stylesheet and one script, both from this origin. Standard access logs are kept briefly for operational purposes and nothing is built from them.