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HTML Audio/Video DOM defaultPlaybackRate Property

❮ HTML Audio/Video DOM Reference


Set video to slow motion by default:

var vid = document.getElementById("myVideo");
vid.defaultPlaybackRate = 0.5;
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Definition and Usage

The defaultPlaybackRate property sets or returns the default playback speed of the audio/video.

Setting this property will only change the default playback speed, not the current. To change the current playback speed, use the playbackRate property.

Browser Support

The numbers in the table specify the first browser version that fully supports the property.

defaultPlaybackRate Yes 9.0 20.0 Not supported Yes


Return the defaultPlaybackRate property:


Set the defaultPlaybackRate property:


Property Values

Value Description
playbackspeed Indicates the default playback speed of the audio/video.
Example values:
  • 1.0 is normal speed
  • 0.5 is half speed (slower)
  • 2.0 is double speed (faster)
  • -1.0 is backwards, normal speed
  • -0.5 is backwards, half speed

Technical Details

Return Value: Number, the default playback speed
Default Value: 1.0

❮ HTML Audio/Video DOM Reference