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MediaRecorder: isTypeSupported() static method

files/en-us/web/api/mediarecorder/istypesupported_static/index.md

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{{APIRef("MediaStream Recording")}}

The isTypeSupported() static method of the {{domxref("MediaRecorder")}} interface returns a {{jsxref("Boolean")}} which is true if the MIME media type specified is one the user agent should be able to successfully record.

Syntax

js-nolint
MediaRecorder.isTypeSupported(mimeType)

Parameters

  • mimeType
    • : The MIME media type to check.

Return value

A {{jsxref("Boolean")}}, true if the {{domxref("MediaRecorder")}} implementation is capable of recording {{domxref("Blob")}} objects for the specified MIME type. Recording may still fail if there are insufficient resources to support the recording and encoding process. If the value is false, the user agent is incapable of recording the specified format.

Examples

js
const types = [
  "video/webm",
  "audio/webm",
  "video/webm;codecs=vp8",
  "video/webm;codecs=daala",
  "video/webm;codecs=h264",
  "audio/webm;codecs=opus",
  "video/mp4",
  "video/mp4;codecs=avc1.64003E,mp4a.40.2",
  "video/mp4;codecs=avc1.64003E,opus",
  "video/mp4;codecs=avc3.64003E,mp4a.40.2",
  "video/mp4;codecs=avc3.64003E,opus",
  "video/mp4;codecs=hvc1.1.6.L186.B0,mp4a.40.2",
  "video/mp4;codecs=hvc1.1.6.L186.B0,opus",
  "video/mp4;codecs=hev1.1.6.L186.B0,mp4a.40.2",
  "video/mp4;codecs=hev1.1.6.L186.B0,opus",
  "video/mp4;codecs=av01.0.19M.08,mp4a.40.2",
  "video/mp4;codecs=av01.0.19M.08,opus",
];

for (const type of types) {
  console.log(
    `Is ${type} supported? ${
      MediaRecorder.isTypeSupported(type) ? "Yes!" : "Nope :("
    }`,
  );
}

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also