Playback lab

One video. Three stream paths.

Switch protocols, confirm what the browser can play, then test the matching source with Stream Katcher.

Protocol test

Switch the delivery path.

Use the matching MP4, HLS, and DASH URLs for one video. The MP4 source is also used to check HTTP byte ranges.

Browser settings saved

Sample video sizeSwitch the bundled test asset

Your test video will play here

Add a direct MP4 URL to test progressive playback and byte ranges.

Add a source to beginWaiting for a configured URL

HTTP byte-range check

Requests bytes 0–1 and cancels the response if the server ignores Range.

Test the Stream Katcher download

With this video playing, open the extension on this tab and start a download. The active URL above identifies the selected protocol.

Source setup

Configure this test

01 / 01

Playback request

Request controls

All optional · off by default

Custom Authorization headerSend the generated Bearer code on HLS, DASH, and byte-range requests.Origin + AuthorizationRequire a 127.0.0.1 Origin or Referer and a valid Authorization code.Signed URL · 2 minutesSign the selected bundled source and its manifest resources for 120 seconds.

One video, four test sources

Both samples include MP4, an HLS media playlist, an HLS master with multiple renditions, and DASH. Small is video-only; Medium includes H.264 video and AAC audio.

0 of 4 sources configured

Settings and generated Authorization code are saved in this browser. Custom source URLs remain in this tab only.