MediaSettingsRange

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The MediaSettingsRange interface of the the MediaStream Image Capture API provides the possible range and value size of PhotoCapabilities.imageHeight and PhotoCapabilities.imageWidth. A PhotoCapabilities object can be retrieved by calling ImageCapture.PhotoCapabilities().

Properties

MediaSettingsRange.max
Returns the maximum value of this settings.
MediaSettingsRange.min
Returns the minimum value of this setting.
MediaSettingsRange.step
Returns the minimum difference between consecutive values of this setting.

Example

The following example, extracted from Chrome's Image Capture / Photo Resolution Sample, uses the results from getPhotoCapabilities().imageWidth to modify the size of an input range.  

const input = document.querySelector('input[type="range"]');

var imageCapture;

navigator.mediaDevices.getUserMedia({video: true})
.then(mediaStream => {
  document.querySelector('video').srcObject = mediaStream;

  const track = mediaStream.getVideoTracks()[0];
  imageCapture = new ImageCapture(track);

  return imageCapture.getPhotoCapabilities();
})
.then(photoCapabilities => {
  const settings = imageCapture.track.getSettings();

  input.min = photoCapabilities.imageWidth.min;
  input.max = photoCapabilities.imageWidth.max;
  input.step = photoCapabilities.imageWidth.step;

  return imageCapture.getPhotoSettings();
})
.then(photoSettings => {
  input.value = photoSettings.imageWidth;
})
.catch(error => console.log('Argh!', error.name || error));

Specifications

Specification Status Comment
MediaStream Image Capture
The definition of 'MediaSettingsRange' in that specification.
Working Draft Initial definition.

Browser Compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 59 ? ? 46 ?
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
Basic support 59 59 ? ? ? 46 ?

Document Tags and Contributors

 Contributors to this page: jpmedley
 Last updated by: jpmedley,