MediaElement
Interface
HTML media elements (such as
<audio>
and
<video>
) expose the
HTMLMediaElement
interface which provides special properties and methods (beyond the regular
element object interface they also have available to them by inheritance) for manipulating the layout and presentation of media elements.
Extends
Element
Subinterfaces
AudioElement, VideoElement
Static Fields
Code
final int EOS_DECODE_ERR #
static final int EOS_DECODE_ERR = 2;
Code
final int EOS_NETWORK_ERR #
static final int EOS_NETWORK_ERR = 1;
Code
final int EOS_NO_ERROR #
static final int EOS_NO_ERROR = 0;
Code
final int HAVE_CURRENT_DATA #
static final int HAVE_CURRENT_DATA = 2;
Code
final int HAVE_ENOUGH_DATA #
static final int HAVE_ENOUGH_DATA = 4;
Code
final int HAVE_FUTURE_DATA #
static final int HAVE_FUTURE_DATA = 3;
static final int HAVE_METADATA = 1;
Code
final int HAVE_NOTHING #
static final int HAVE_NOTHING = 0;
Code
final int NETWORK_EMPTY #
static final int NETWORK_EMPTY = 0;
Code
final int NETWORK_IDLE #
static final int NETWORK_IDLE = 1;
Code
final int NETWORK_LOADING #
static final int NETWORK_LOADING = 2;
Code
final int NETWORK_NO_SOURCE #
static final int NETWORK_NO_SOURCE = 3;
Code
final int SOURCE_CLOSED #
static final int SOURCE_CLOSED = 0;
Code
final int SOURCE_ENDED #
static final int SOURCE_ENDED = 2;
Code
final int SOURCE_OPEN #
static final int SOURCE_OPEN = 1;
Methods
TextTrack addTextTrack(String kind, [String label, String language]);
Determines whether the specified media type can be played back.
String canPlayType(String type, String keySystem);
Code
void load() #
Begins loading the media content from the server.
void load();
MediaElementEvents get on();
Code
void pause() #
Pauses the media playback.
void pause();
Code
void play() #
Begins playback of the media. If you have changed the
src attribute of the media element since the page was loaded, you must call load() before play(), otherwise the original media plays again.
void play();
void webkitAddKey(String keySystem, Uint8Array key, [Uint8Array initData, String sessionId]);
Code
void webkitCancelKeyRequest(String keySystem, String sessionId) #
void webkitCancelKeyRequest(String keySystem, String sessionId);
Code
void webkitGenerateKeyRequest(String keySystem, [Uint8Array initData]) #
void webkitGenerateKeyRequest(String keySystem, [Uint8Array initData]);
Code
void webkitSourceAbort(String id) #
void webkitSourceAbort(String id);
Code
void webkitSourceAddId(String id, String type) #
void webkitSourceAddId(String id, String type);
Code
void webkitSourceAppend(String id, Uint8Array data) #
void webkitSourceAppend(String id, Uint8Array data);
TimeRanges webkitSourceBuffered(String id);
Code
void webkitSourceEndOfStream(int status) #
void webkitSourceEndOfStream(int status);
Code
void webkitSourceRemoveId(String id) #
void webkitSourceRemoveId(String id);
Fields
Code
bool autoplay #
Reflects the
autoplay
HTML attribute, indicating whether to begin playing as soon as enough media is available.
bool autoplay;
The ranges of the media source that the browser has buffered, if any.
final TimeRanges buffered;
MediaController controller;
Code
bool controls #
Reflects the
controls
HTML attribute, indicating whether user interface items for controlling the resource should be displayed.
bool controls;
Code
final String currentSrc #
The absolute URL of the chosen media resource (if, for example, the server selects a media file based on the resolution of the user's display), or an empty string if the
networkState
is
EMPTY
.
final String currentSrc;
Code
num currentTime #
The current playback time, in seconds. Setting this value seeks the media to the new time.
num currentTime;
Code
bool defaultMuted #
Reflects the
muted
HTML attribute, indicating whether the media element's audio output should be muted by default. Changing the value dynamically will not unmute the audio (it only controls the default state).
bool defaultMuted;
Code
num defaultPlaybackRate #
The default playback rate for the media. The Ogg backend does not support this. 1.0 is "normal speed," values lower than 1.0 make the media play slower than normal, higher values make it play faster. The value 0.0 is invalid and throws a
NOT_SUPPORTED_ERR
exception.
num defaultPlaybackRate;
Code
final num duration #
The length of the media in seconds, or zero if no media data is available. If the media data is available but the length is unknown, this value is
NaN
. If the media is streamed and has no predefined length, the value is
Inf
.
final num duration;
Code
final bool ended #
Indicates whether the media element has ended playback.
final bool ended;
The media error object for the most recent error, or null if there has not been an error.
final MediaError error;
Code
final num initialTime #
Code
bool loop #
Reflects the
loop
HTML attribute, indicating whether the media element should start over when it reaches the end.
bool loop;
Code
bool muted #
true
if the audio is muted, and
false
otherwise.
bool muted;
Code
final int networkState #
The current state of fetching the media over the network.
EMPTY | 0 | There is no data yet. The readyState is also HAVE_NOTHING . |
LOADING | 1 | The media is loading. |
LOADED_METADATA | 2 | The media's metadata has been loaded. |
LOADED_FIRST_FRAME | 3 | The media's first frame has been loaded. |
LOADED | 4 | The media has been fully loaded. |
final int networkState;
Code
final bool paused #
Indicates whether the media element is paused.
final bool paused;
Code
num playbackRate #
The current rate at which the media is being played back. This is used to implement user controls for fast forward, slow motion, and so forth. The normal playback rate is multiplied by this value to obtain the current rate, so a value of 1.0 indicates normal speed. Not supported by the Ogg backend.
num playbackRate;
The ranges of the media source that the browser has played, if any.
final TimeRanges played;
Reflects the
preload
HTML attribute, indicating what data should be preloaded at page-load time, if any.
String preload;
Code
final int readyState #
The readiness state of the media:
HAVE_NOTHING | 0 | No information is available about the media resource. |
HAVE_METADATA | 1 | Enough of the media resource has been retrieved that the metadata attributes are initialized. Seeking will no longer raise an exception. |
HAVE_CURRENT_DATA | 2 | Data is available for the current playback position, but not enough to actually play more than one frame. |
HAVE_FUTURE_DATA | 3 | Data for the current playback position as well as for at least a little bit of time into the future is available (in other words, at least two frames of video, for example). |
HAVE_ENOUGH_DATA | 4 | Enough data is available—and the download rate is high enough—that the media can be played through to the end without interruption. |
final int readyState;
The time ranges that the user is able to seek to, if any.
final TimeRanges seekable;
Code
final bool seeking #
Indicates whether the media is in the process of seeking to a new position.
final bool seeking;
Reflects the
src
HTML attribute, containing the URL of a media resource to use.
String src;
Code
final num startTime #
The earliest possible position in the media, in seconds.
final num startTime;
final TextTrackList textTracks;
Code
num volume #
The audio volume, from 0.0 (silent) to 1.0 (loudest).
num volume;
Code
final int webkitAudioDecodedByteCount #
final int webkitAudioDecodedByteCount;
Code
bool webkitClosedCaptionsVisible #
bool webkitClosedCaptionsVisible;
Code
final bool webkitHasClosedCaptions #
final bool webkitHasClosedCaptions;
final String webkitMediaSourceURL;
Code
bool webkitPreservesPitch #
bool webkitPreservesPitch;
Code
final int webkitSourceState #
final int webkitSourceState;
Code
final int webkitVideoDecodedByteCount #
final int webkitVideoDecodedByteCount;
This page includes content from the
Mozilla Foundation that is graciously
licensed under a
Creative Commons: Attribution-Sharealike license.
Mozilla has no other association with Dart or dartlang.org. We
encourage you to improve the web by
contributing to
The Mozilla Developer Network.