The HTMLVideoElement
interface's read-only videoWidth
property indicates the intrinsic width of the video, expressed in CSS pixels. In simple terms, this is the width of the media in its natural size. See About intrinsic width and height for more details.
Syntax
width = htmlVideoElement.videoWidth;
Value
An integer value specifying the intrinsic width of the video in CSS pixels. If the element's readyState
is HTMLMediaElement.HAVE_NOTHING
, then the value of this property is 0, because neither video nor poster frame size information is yet available.
About intrinsic width and height
A user agent calculates the intrinsic width and height of the element's media by starting with the media's raw pixel width and height, then taking into account factors including:
- The media's aspect ratio.
- The media's clean aperture (the sub-rectangle centered within the media that matches the target aspect ratio).
- The target device's resolution.
- Any other factors required by the media format.
If the element is currently displaying the poster frame rather than rendered video, the poster frame's intrinsic size is considered to be the size of the <video>
element.
If at any time the intrinsic size of the media changes and the element's readyState
isn't HAVE_NOTHING
, a resize
event will be sent to the <video>
element. This can happen when the element switches from displaying the poster frame to displaying video content, or when the displayed video track changes.
Example
This example creates a handler for the resize
event that resizes the <video>
element to match the intrinsic size of its contents.
let v = document.getElementById("myVideo"); v.addEventListener("resize", ev => { let w = v.videoWidth; let h = v.videoHeight; if (w && h) { v.style.width = w; v.style.height = h; } }, false);
Note that this only applies the change if both the videoWidth
and the videoHeight
are non-zero. This avoids applying invalid changes when there's no true information available yet for dimensions.
Specifications
Specification | Status | Comment |
---|---|---|
HTML Living Standard The definition of 'HTMLVideoElement.videoWidth' in that specification. |
Living Standard | |
HTML5 The definition of 'HTMLVideoElement.videoWidth' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
videoWidth | Chrome Full support Yes | Edge Full support 12 | Firefox Full support 4 | IE Full support 9 | Opera Full support 10.5 | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support 4 | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support