Demos

Test pages for media, audio, and codec behavior in the browser.

• Spatial Audio Test Page

  Demonstrates playback of potentially spatialized MP4 video/audio files and includes a Web Audio API example for 3D positional audio.

• Video Flip Test Page

  Features live camera preview, video recording with selectable MIME types, a conceptual video flip effect.

• WebCodecs Opus Test

  Tests the WebCodecs AudioEncoder and AudioDecoder with the Opus codec and a user-defined frame duration.

• VTTCue Timing Test

  Dynamically injecting a VTTCue into a video track to observe its timing and event behavior.

• Audio Playback Test

  Record a 5-second audio clip from a microphone and play it back to verify capture quality.

• MSE Test Page

  Media Source Extensions (MSE) test page for various media types using source URL and type as query parameters.

• Media Formats Test

  Verifies that the browser can successfully record and natively play back media formats (e.g., Matroska, QuickTime).

• Autoplay Test Page

  Tests the browser's autoplay permissions for audio playback.

• Multichannel Audio Verification Suite

  Verifies decodeAudioData(), Web Audio multichannel routing, and direct <audio> element playback with per-channel peak level meters.

• Spotify Heardle

  Game where a Premium Spotify User can log in and play a song guessing game based on their playlists.

• Poople Map

  Every road leads to poop.

• Speedometer Next

  An open source repository for the Speedometer benchmark.

• IAMF Web Studio

  A specialized web-based studio for creating, editing, and previewing Immersive Audio Model and Formats (IAMF) content.