HTML and CSS Reference
Table 8-1. List of Common Attributes for Media Elements (Audio and Video)
URL specifying the address of the media file.
Crossorigin CORS settings
Enumerated value ( anonymous or use-credentials ) specifying how
to deal with cross origin requests.
Enumerated value ( none , metadata , or auto ) specifying if the media
source should be preloaded. “ none ” will not preload any data and will
minimize unnecessary traffic to the server. “ metadata ” will attempt to
fetch the metadata of the media source (duration, dimensions, etc.)
prior to playing back the file. During playback the slowest possible
download rate will be used while still maintaining consistent
playback to save bandwidth. “ auto ” leaves the download strategy
to the browser and may use excessive bandwidth as the browser
may attempt to aggressively download the whole media file prior to
Boolean value specifying if the media file should automatically start
playback when the page has been loaded.
String value that serves as a name for grouping and synchronizing
video and audio clips. Audio and video elements with the same string
value in the mediagroup attribute will be synchronized and managed
from the same network request. When the mediagroup attribute is
used, a MediaController object is created and set in the controller
property of the HTMLMediaElement . The property can be fetched using
same controller (i.e., with the same mediagroup name).
Boolean value that indicates if the media element should start over
once it reaches the end of the clip.
Boolean value that indicates if the audio should be muted during
Boolean value that indicates if the user controls (play, pause, seeker, etc.)
should be displayed.
The video element contains a few additional attributes for specifying the dimensions of the video and the poster
to appear (if any) before playback of the video begins. The additional video attributes are listed in Table 8-2 .
Table 8-2. List of Additional Attributes That Apply to Video Elements Only
Width of the video playing area.
Height of the video playing area.
URL of the still image that should appear as the poster for the video
before playback starts.