EME & MediaCapabilities Encryption Scheme Polyfill
A polyfill to add support for EncryptionScheme queries in EME and MediaCapabilities.
Because this polyfill can't know what schemes the UA or CDM actually support, it assumes support for the historically-supported schemes of each well-known key system.
In source form (
index.js), this is compatible with the Closure Compiler and
the CommonJS module format. It can also be directly included via a script tag.
The minified bundle (
dist/eme-encryption-scheme-polyfill.js) is a standalone
module compatible with the CommonJS and AMD module formats, and can also be
directly included via a script tag. It is about 4.4kB uncompressed, and gzips
to about 1.5kB.
To avoid the possibility of extra user prompts, this will shim EME & MC so long
as they exist, without checking support for
encryptionScheme upfront. The
support check will happen on-demand the first time EME/MC are used.
npm install eme-encryption-scheme-polyfill
// Install both EME & MC polyfills at once:EncryptionSchemePolyfills;// Install each one separately (unminified source only):EmeEncryptionSchemePolyfill;McEncryptionSchemePolyfill;