The attribute defaultPlaybackRate that sets or returns the default playback speed of audio/video in H5

Example

Set video to the default low-speed playback:

myVid=document.getElementById("video1");
myVid.defaultPlaybackRate=0.5;

Definition and usage

defaultPlaybackRate AttributesSet or Returns the default playback speed of audio/video.

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

Browser support

Only Google Chrome supports the defaultPlaybackRate attribute.

Syntax

Set the defaultPlaybackRate attribute:

audio|video.defaultPlaybackRate=playbackspeed

Return the defaultPlaybackRate attribute:

audio|video.defaultPlaybackRate

Attribute value

Value	Description
playbackspeed	Indicates the default playback speed of audio/video. Example value: 1.0 Normal speed 0.5 Half speed (slower) 2.0x speed (faster) -1.0 backward, normal speed -0.5 backward, half speed

Technical details

Return value	Numeric value , the default playback speed
Default value:	1.0

Instance

Settings The video defaults to fast playback:

document.getElementById("myVideo").defaultPlaybackRate =5;

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