The CanvasCaptureMediaStreamTrack interface represents the video
contained in a `web.streams.MediaStream` being generated from
`<canvas>` following a call to `HTMLCanvasElement.captureStream()`.

web.media interfaces.

The HTMLMediaElement interface adds to `web.dom.HTMLElement`
properties and methods needed to support basic media-related
that are common to audio and video.

HTMLMediaElement Events.

The ImageCapture interface of the MediaStream Image Capture API
methods to enable the capture of images or photos from a camera
other photographic device provides an interface for capturing
from a photographic device referenced through a valid `web.audio.MediaStreamTrack`.

The MediaKeyMessageEvent interface of the EncryptedMediaExtensions
contains the content and related data when the content decryption
generates a message for the session.

The MediaKeyStatusMap interface of the EncryptedMediaExtensions
is a read-only map of media key statuses by key IDs.

The MediaKeySystemConfiguration interface Encrypted Media Extensions
provides configuration information about the media key system.

The MediaQueryListEvent object stores information on the changes
have happened to a `web.cssdom.MediaQueryList` object — instances
available as the event object on a function referenced by a `MediaQueryList.onchange`
or `MediaQueryList.addListener()` call.

The MediaSettingsRange interface of the the MediaStream Image
API provides the possible range and value size of `PhotoCapabilities.imageHeight`
`PhotoCapabilities.imageWidth`. A `web.media.PhotoCapabilities`
can be retrieved by calling `ImageCapture.PhotoCapabilities()`.

The PhotoCapabilities interface of the the MediaStream Image
API provides available configuration options for an attached
device. A PhotoCapabilities object is retrieved by calling `ImageCapture.getPhotoCapabilities()`.

This interface also inherits properties from `web.EventTarget`.

TextTrack Events.

TextTrackCue is an abstract class which is used as the basis
the various derived cue types, such as `web.vtt.VTTCue`; you
instead work with those derived types.

The TextTrackList interface is used to represent a list of the
tracks defined by the `<track>` element, with each track represented
a separate `textTrack` object in the list.

TextTrackList Events.

The TimeRanges interface is used to represent a set of time ranges,
for the purpose of tracking which portions of media have been
when loading it for use by the `<audio>` and `<video>` elements.

The VRDisplay interface of the WebVR API represents any VR device
by this API. It includes generic information such as device IDs
descriptions, as well as methods for starting to present a VR
retrieving eye parameters and display capabilities, and other
functionality.