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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

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
MediaSettingsRange
Experimental
Chrome Full support 59Edge ? Firefox ? IE ? Opera Full support 46Safari ? WebView Android Full support 59Chrome Android Full support 59Edge Mobile ? Firefox Android ? Opera Android Full support 43Safari iOS ? Samsung Internet Android ?
max
Experimental
Chrome Full support 59Edge ? Firefox ? IE ? Opera Full support 46Safari ? WebView Android Full support 59Chrome Android Full support 59Edge Mobile ? Firefox Android ? Opera Android Full support 43Safari iOS ? Samsung Internet Android ?
min
Experimental
Chrome Full support 59Edge ? Firefox ? IE ? Opera Full support 46Safari ? WebView Android Full support 59Chrome Android Full support 59Edge Mobile ? Firefox Android ? Opera Android Full support 43Safari iOS ? Samsung Internet Android ?
step
Experimental
Chrome Full support 59Edge ? Firefox ? IE ? Opera Full support 46Safari ? WebView Android Full support 59Chrome Android Full support 59Edge Mobile ? Firefox Android ? Opera Android Full support 43Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

ドキュメントのタグと貢献者

このページの貢献者: mdnwebdocs-bot, connorshea, jpmedley
最終更新者: mdnwebdocs-bot,