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 | ? |