Media Codec Support Tester
Query playback and decoding capability for a media configuration.
Enabling local controls…
No upload or storage. Clipboard is read only after your explicit button press; no automatic permission requests or hardware activation.
API presence is not a hardware or permission guarantee. No uploads, storage, automatic permission requests or external URL fetches. Inputs, logs and output are bounded to 1 MiB; event history retains the latest 200 records.
Results and preview
Status: available = API exposed; granted = permission allowed; prompt = not granted yet; denied = blocked; unsupported = API unavailable; unknown = not determined. Hardware support has not been verified.
Choose options, then inspect or record. Changing input clears old results.
Sources reviewed 2026-10-19: ToolHub · MDN Web APIs
How to use this tool
Choose options, then explicitly start or inspect. Stop and clear recorded data when finished.
When not to use it
API presence is not a hardware or permission guarantee. No uploads, storage, automatic permission requests or external URL fetches. Inputs, logs and output are bounded to 1 MiB; event history retains the latest 200 records.