The isConfigSupported() static method of the VideoDecoder interface checks if the given config is supported (that is, if VideoDecoder objects can be successfully configured with the given config).

config

The dictionary object accepted by VideoDecoder.configure

A Promise that resolves with an object containing the following members:

supported

A boolean value which is true if the given config is supported by the decoder.

config

A copy of the given config with all the fields recognized by the decoder.

TypeError

Thrown if the provided config is invalid; that is, if doesn't have required values (such as an empty codec field) or has invalid values (such as a negative codedWidth).

The following example tests if the browser supports accelerated and un-accelerated versions of several video codecs.

const codecs = ["avc1.42001E", "vp8", "vp09.00.10.08", "av01.0.04M.08"];
const accelerations = ["prefer-hardware", "prefer-software"];

const configs = [];
for (const codec of codecs) {
  for (const acceleration of accelerations) {
    configs.push({
      codec,
      hardwareAcceleration: acceleration,
      codedWidth: 1280,
      codedHeight: 720,
      not_supported_field: 123,
    });
  }
}

for (const config of configs) {
  const support = await VideoDecoder.isConfigSupported(config);
  console.log(
    `VideoDecoder's config ${JSON.stringify(support.config)} support: ${
      support.supported
    }`,
  );
}