Pan, tilt, and zoom features on cameras are finally controllable on the web.
 François Beaufort [GitHub](https://github.com/beaufortfrancois)
Room-scale video conferencing solutions deploy cameras with pan, tilt, and zoom
(PTZ) capabilities so that software can point the camera at meeting
participants. Starting in Chrome 87, the pan, tilt, and zoom features on
cameras are available to websites using media track constraints in
`MediaDevices.getUserMedia()` and `MediaStreamTrack.applyConstraints()`.
## Using the API
### Feature detection
Feature detection for hardware is different from what you're probably used to.
The presence of `"pan"`, `"tilt"`, and `"zoom"` constraint names in
`navigator.mediaDevices.getSupportedConstraints()` tells you that the browser
supports the API to control camera PTZ, but not whether the camera hardware
supports it. As of Chrome 87, controlling camera PTZ is supported on
desktop, while Android still supports zoom only.
```javascript
const supports = navigator.mediaDevices.getSupportedConstraints();
if (supports.pan && supports.tilt && supports.zoom) {
// Browser supports camera PTZ.
}
```
### Request camera PTZ access
A website is allowed to control camera PTZ only if the user has explicitly
granted the camera with PTZ permission through a prompt.
To request camera PTZ access, call `navigator.mediaDevices.getUserMedia()` with
the PTZ constraints as shown below. This will prompt the user to grant both
regular camera and camera with PTZ permissions.
 Camera PTZ user prompt.
The returned promise resolves with a
[`MediaStream`](https://developer.mozilla.org/docs/Web/API/MediaStream) object
used to show the camera video stream to the user. If the camera does not support
PTZ, the user is given a regular camera prompt.
```javascript
try {
// User is prompted to grant both camera and PTZ access in a single call.
// If camera doesn't support PTZ, it falls back to a regular camera prompt.
const stream = await navigator.mediaDevices.getUserMedia({
// Website asks to control camera PTZ as well without altering the
// current pan, tilt, and zoom settings.
video: { pan: true, tilt: true, zoom: true }
});
// Show camera video stream to user.
document.querySelector("video").srcObject = stream;
} catch (error) {
// User denies prompt or matching media is not available.
console.log(error);
}
```
A previously-granted camera permission, specifically one without PTZ access,
does not automatically gain PTZ access if it becomes available. This is true
even when the camera itself supports PTZ. The permission must be requested
again. Fortunately, you can use the [Permissions API](https://developer.mozilla.org/docs/Web/API/Permissions_API) to query and monitor the
status of PTZ permission.
```javascript
try {
const panTiltZoomPermissionStatus = await navigator.permissions.query({
name: "camera",
panTiltZoom: true
});
if (panTiltZoomPermissionStatus.state == "granted") {
// User has granted access to the website to control camera PTZ.
}
panTiltZoomPermissionStatus.addEventListener("change", () => {
// User has changed PTZ permission status.
});
} catch (error) {
console.log(error);
}
```
To know whether a Chromium-based browser supports PTZ for a camera, go to the
internal `about://media-internals` page and check out the "Pan-Tilt-Zoom" column
in the "Video Capture" tab; "pan tilt" and "zoom" respectively mean the camera
supports the "PanTilt (Absolute)" and "Zoom (Absolute)"
[UVC controls](https://www.usb.org/document-library/video-class-v15-document-set).
The "PanTilt (Relative)" and "Zoom (Relative)" UVC controls are not supported in
Chromium-based browsers.
 Internal page to debug PTZ camera support.
### Control camera PTZ
Manipulate camera PTZ capabilities and settings using the preview
`MediaStreamTrack` from the `stream` object obtained earlier.
`MediaStreamTrack.getCapabilities()` returns a dictionary with the supported
capabilities and the ranges or allowed values. Correspondingly,
`MediaStreamTrack.getSettings()` returns the current settings.
Pan, tilt, and zoom capabilities and settings are available only if supported by
the camera and the user has granted PTZ permission to the camera.
Controlling Camera PTZ.
Call `videoTrack.applyConstraints()` with the appropriate [PTZ advanced
constraints](https://bugs.chromium.org/p/chromium/issues/detail?id=1126045) to
control camera pan, tilt, and zoom as shown in the example.
The returned promise resolves if successful. It rejects if
either:
- The camera with PTZ permission is not granted.
- The camera hardware does not support the PTZ constraint.
- The page is not visible to the user. Use the [Page Visibility API](https://developer.mozilla.org/docs/Web/API/Page_Visibility_API) to detect page visibility changes.
```javascript
// Get video track capabilities and settings.
const [videoTrack] = stream.getVideoTracks();
const capabilities = videoTrack.getCapabilities();
const settings = videoTrack.getSettings();
// Let the user control the camera pan motion if the camera supports it
// and PTZ access is granted.
if ("pan" in settings) {
const input = document.querySelector("input[type=range]");
input.min = capabilities.pan.min;
input.max = capabilities.pan.max;
input.step = capabilities.pan.step;
input.value = settings.pan;
input.addEventListener("input", async () => {
await videoTrack.applyConstraints({ advanced: [{ pan: input.value }] });
});
}
if ("tilt" in settings) {
// similar for tilt...
}
if ("zoom" in settings) {
// similar for zoom...
}
```
It's also possible to configure camera pan, tilt, and zoom by calling
`navigator.mediaDevices.getUserMedia()` with some camera PTZ ideal constraint
values. This is handy when camera PTZ capabilities are known in advance. Note
that [mandatory constraints](https://developer.mozilla.org/en-US/docs/Web/API/Media_Capture_and_Streams_API/Constraints#specifying_a_range_of_values) (min, max, exact) are not allowed here.
```javascript
const stream = await navigator.mediaDevices.getUserMedia({
// Website asks to reset known camera pan.
video: { pan: 0, deviceId: { exact: "myCameraDeviceId" } }
});
```
## Playground
You can play with the API by running the [demo](https://chrome.dev/f/ptz).
> [!TIP]
> **Tip:** If you don't have a camera that supports PTZ, you can [run Chrome with the
> switch](https://www.chromium.org/developers/how-tos/run-chromium-with-flags) `--use-fake-device-for-media-stream` to simulate one on your machine. Enjoy!
## Security considerations
The spec authors have designed and implemented this API using the core
including user control, transparency, and ergonomics. The ability to use this
API is primarily gated by the same permission model as the [Media Capture and
Streams API](https://w3c.github.io/mediacapture-main). In response to a user prompt, the website is allowed to control
camera PTZ only when the page is visible to the user.
## Browser compatibility
### MediaStream API
Browser Support
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[Source](https://developer.mozilla.org/docs/Web/API/MediaStream)
### Permissions API
Browser Support
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[Source](https://developer.mozilla.org/docs/Web/API/Permissions)
### Page Visibility API
Browser Support
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stop-color='%23fff44f' stop-opacity='.2'/%3E%3Cstop offset='.6' stop-color='%23fff44f' stop-opacity='0'/%3E%3C/linearGradient%3E%3C/defs%3E%3Cpath d='M479 166c-11-25-32-52-49-60a249 249 0 0 1 25 73c-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-60 35-81 101-83 134a120 120 0 0 0-66 25 71 71 0 0 0-6-5 111 111 0 0 1-1-58c-25 11-44 29-58 44-9-12-9-52-8-60l-8 4a175 175 0 0 0-24 21 210 210 0 0 0-22 26 203 203 0 0 0-32 73l-1 2-2 15a229 229 0 0 0-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121zM202 355l3 1-3-1zm55-145zm198-31z' fill='url(%23ff-a)'/%3E%3Cpath d='M479 166c-11-25-32-52-49-60 14 26 22 53 25 72v1a207 207 0 0 1-206 279c-113-3-212-87-231-197-3-17 0-26 2-40-2 11-3 14-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121z' fill='url(%23ff-b)'/%3E%3Cpath d='M479 166c-11-25-32-52-49-60 14 26 22 53 25 72v1a207 207 0 0 1-206 279c-113-3-212-87-231-197-3-17 0-26 2-40-2 11-3 14-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121z' fill='url(%23ff-c)'/%3E%3Cpath d='m362 195 1 1a130 130 0 0 0-22-29C266 92 322 5 331 0c-60 35-81 101-83 134l9-1c45 0 84 25 105 62z' fill='url(%23ff-d)'/%3E%3Cpath d='M257 210c-1 6-22 26-29 26-68 0-80 41-80 41 3 35 28 64 57 79l4 2 7 3a107 107 0 0 0 31 6c120 6 143-143 57-186 22-4 45 5 58 14-21-37-60-62-105-62l-9 1a120 120 0 0 0-66 25l17 16c16 16 58 33 58 35z' fill='url(%23ff-e)'/%3E%3Cpath d='M257 210c-1 6-22 26-29 26-68 0-80 41-80 41 3 35 28 64 57 79l4 2 7 3a107 107 0 0 0 31 6c120 6 143-143 57-186 22-4 45 5 58 14-21-37-60-62-105-62l-9 1a120 120 0 0 0-66 25l17 16c16 16 58 33 58 35z' fill='url(%23ff-f)'/%3E%3Cpath d='m171 151 5 3a111 111 0 0 1-1-58c-25 11-44 29-58 44 1 0 36 0 54 11z' fill='url(%23ff-g)'/%3E%3Cpath d='M18 261a242 242 0 0 0 231 197 207 207 0 0 0 206-279c8 56-20 110-64 146-86 71-169 43-186 31l-3-1c-50-24-71-70-67-110-42 0-57-35-57-35s38-28 89-4c46 22 90 4 90 4 0-2-42-19-58-35l-17-16a71 71 0 0 0-6-5l-5-3c-18-11-52-11-54-11-9-12-9-51-8-60l-8 4a175 175 0 0 0-24 21 210 210 0 0 0-22 26 203 203 0 0 0-32 73c0 1-9 38-5 57z' fill='url(%23ff-h)'/%3E%3Cpath d='M341 167a130 130 0 0 1 22 29 46 46 0 0 1 4 3c55 50 26 121 24 126 44-36 72-90 64-146-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-9 5-65 92 10 167z' fill='url(%23ff-i)'/%3E%3Cpath d='M367 199a46 46 0 0 0-4-3l-1-1c-13-9-36-18-58-15 86 44 63 193-57 187a107 107 0 0 1-31-6 131 131 0 0 1-11-5c17 12 99 39 186-31 2-5 31-76-24-126z' fill='url(%23ff-j)'/%3E%3Cpath d='M148 277s12-41 80-41c7 0 28-20 29-26s-44 18-90-4c-51-24-89 4-89 4s15 35 57 35c-4 40 16 85 67 110l3 1c-29-15-54-44-57-79z' fill='url(%23ff-k)'/%3E%3Cpath d='M479 166c-11-25-32-52-49-60a249 249 0 0 1 25 73c-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-60 35-81 101-83 134l9-1c45 0 84 25 105 62-13-9-36-18-58-14 86 43 63 192-57 186a107 107 0 0 1-31-6 131 131 0 0 1-11-5l-3-1 3 1c-29-15-54-44-57-79 0 0 12-41 80-41 7 0 28-20 29-26 0-2-42-19-58-35l-17-16a71 71 0 0 0-6-5 111 111 0 0 1-1-58c-25 11-44 29-58 44-9-12-9-52-8-60l-8 4a175 175 0 0 0-24 21 210 210 0 0 0-22 26 203 203 0 0 0-32 73l-1 2-2 15a279 279 0 0 0-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121zm-24 13z' fill='url(%23ff-l)'/%3E%3C/svg%3E)
- ' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%2324a5f3' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%231e8ceb' /%3E%3C/radialGradient%3E%3CradialGradient id='s-j' cx='109.3' cy='13.8' r='93.1' gradientTransform='matrix(-.02 1.1 -1.04 -.02 137 -115)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235488d6' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235d96eb' /%3E%3C/radialGradient%3E%3C/defs%3E%3Crect width='220' height='220' x='22' y='-107' fill='url(%23s-a)' ry='49' transform='matrix(.57 0 0 .57 187 256)' /%3E%3Cg transform='translate(194 190)'%3E%3Ccircle cx='67.8' cy='67.7' fill='url(%23s-c)' paint-order='stroke fill markers' r='54' /%3E%3Ccircle cx='-69.9' cy='69.3' fill='url(%23s-i)' transform='translate(138 -2)' r='54' /%3E%3C/g%3E%3Cellipse cx='120' cy='14.2' fill='url(%23s-j)' rx='93.1' ry='93.7' transform='matrix(.58 0 0 .58 192 250)' /%3E%3Cg transform='matrix(.58 0 0 .57 197 182)'%3E%3Cpath fill='%23cac7c8' d='M46 192h1l72-48-7-9-66 57Z' /%3E%3Cpath fill='%23fbfffc' d='M46 191v1l66-57-7-9-59 65Z' /%3E%3Cpath fill='url(%23s-d)' d='m119 144-7-9 66-57-59 66Z' /%3E%3Cpath fill='%23fb645c' d='m105 126 7 9 66-57-1-1-72 49Z' /%3E%3C/g%3E%3Cpath stroke='%23fff' stroke-linecap='round' stroke-miterlimit='1' stroke-width='1.3' d='m287 278 3-2m-12-17 8-2m-8-3h4m-4-13 8 2m-8 3h4m-1-13 7 3m-4-11 7 4m-2-11 6 6m0-12 6 7m1-11 4 6m4-10 3 7m5-9 2 7m15-7-1 7m10-5-3 7m11-4-4 7m11-2-5 6m16 7-7 4m10 4-7 3m10 6-8 1m8 16-8-2m5 10-7-3m4 11-7-4m2 11-6-5m0 11-5-6m-2 11-4-7m-4 11-3-8m-6 10-1-8m-16 8 2-8m-10 5 3-7m-11 4 4-7m-11 2 5-6m-8 3 3-3m4 8 2-3m5 8 2-4m6 7 1-4m8 5v-4m8 4v-4m9 3-1-4m9 1-2-4m9 0-2-4m9-2-3-3m8-4-3-2m8-5-4-2m7-6-4-1m5-8h-4m4-8h-4m3-9-4 1m1-9-4 2m-1-9-3 2m-2-9-3 3m-4-8-2 3m-5-8-2 4m-6-6-1 3m-8-5v4m-8-4v4m-9-2 1 3m-9 0 2 3m-9 1 2 3m-9 2 3 3m-8 4 3 2m-8 5 4 2m-7 6 4 1m-4 25 4-1m-2 5 7-3m-6 7 4-2m-2 6 7-4m-13-21h8m41-41v-8m0 99v-8m49-42h-8' transform='translate(-65 8)' /%3E%3C/svg%3E)
[Source](https://developer.mozilla.org/docs/Web/API/Document/visibilityState)
### `MediaDevices.getUserMedia()`
Browser Support
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38-5 57z' fill='url(%23ff-h)'/%3E%3Cpath d='M341 167a130 130 0 0 1 22 29 46 46 0 0 1 4 3c55 50 26 121 24 126 44-36 72-90 64-146-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-9 5-65 92 10 167z' fill='url(%23ff-i)'/%3E%3Cpath d='M367 199a46 46 0 0 0-4-3l-1-1c-13-9-36-18-58-15 86 44 63 193-57 187a107 107 0 0 1-31-6 131 131 0 0 1-11-5c17 12 99 39 186-31 2-5 31-76-24-126z' fill='url(%23ff-j)'/%3E%3Cpath d='M148 277s12-41 80-41c7 0 28-20 29-26s-44 18-90-4c-51-24-89 4-89 4s15 35 57 35c-4 40 16 85 67 110l3 1c-29-15-54-44-57-79z' fill='url(%23ff-k)'/%3E%3Cpath d='M479 166c-11-25-32-52-49-60a249 249 0 0 1 25 73c-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-60 35-81 101-83 134l9-1c45 0 84 25 105 62-13-9-36-18-58-14 86 43 63 192-57 186a107 107 0 0 1-31-6 131 131 0 0 1-11-5l-3-1 3 1c-29-15-54-44-57-79 0 0 12-41 80-41 7 0 28-20 29-26 0-2-42-19-58-35l-17-16a71 71 0 0 0-6-5 111 111 0 0 1-1-58c-25 11-44 29-58 44-9-12-9-52-8-60l-8 4a175 175 0 0 0-24 21 210 210 0 0 0-22 26 203 203 0 0 0-32 73l-1 2-2 15a279 279 0 0 0-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121zm-24 13z' fill='url(%23ff-l)'/%3E%3C/svg%3E)
- ' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%2324a5f3' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%231e8ceb' /%3E%3C/radialGradient%3E%3CradialGradient id='s-j' cx='109.3' cy='13.8' r='93.1' gradientTransform='matrix(-.02 1.1 -1.04 -.02 137 -115)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235488d6' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235d96eb' /%3E%3C/radialGradient%3E%3C/defs%3E%3Crect width='220' height='220' x='22' y='-107' fill='url(%23s-a)' ry='49' transform='matrix(.57 0 0 .57 187 256)' /%3E%3Cg transform='translate(194 190)'%3E%3Ccircle cx='67.8' cy='67.7' fill='url(%23s-c)' paint-order='stroke fill markers' r='54' /%3E%3Ccircle cx='-69.9' cy='69.3' fill='url(%23s-i)' transform='translate(138 -2)' r='54' /%3E%3C/g%3E%3Cellipse cx='120' cy='14.2' fill='url(%23s-j)' rx='93.1' ry='93.7' transform='matrix(.58 0 0 .58 192 250)' /%3E%3Cg transform='matrix(.58 0 0 .57 197 182)'%3E%3Cpath fill='%23cac7c8' d='M46 192h1l72-48-7-9-66 57Z' /%3E%3Cpath fill='%23fbfffc' d='M46 191v1l66-57-7-9-59 65Z' /%3E%3Cpath fill='url(%23s-d)' d='m119 144-7-9 66-57-59 66Z' /%3E%3Cpath fill='%23fb645c' d='m105 126 7 9 66-57-1-1-72 49Z' /%3E%3C/g%3E%3Cpath stroke='%23fff' stroke-linecap='round' stroke-miterlimit='1' stroke-width='1.3' d='m287 278 3-2m-12-17 8-2m-8-3h4m-4-13 8 2m-8 3h4m-1-13 7 3m-4-11 7 4m-2-11 6 6m0-12 6 7m1-11 4 6m4-10 3 7m5-9 2 7m15-7-1 7m10-5-3 7m11-4-4 7m11-2-5 6m16 7-7 4m10 4-7 3m10 6-8 1m8 16-8-2m5 10-7-3m4 11-7-4m2 11-6-5m0 11-5-6m-2 11-4-7m-4 11-3-8m-6 10-1-8m-16 8 2-8m-10 5 3-7m-11 4 4-7m-11 2 5-6m-8 3 3-3m4 8 2-3m5 8 2-4m6 7 1-4m8 5v-4m8 4v-4m9 3-1-4m9 1-2-4m9 0-2-4m9-2-3-3m8-4-3-2m8-5-4-2m7-6-4-1m5-8h-4m4-8h-4m3-9-4 1m1-9-4 2m-1-9-3 2m-2-9-3 3m-4-8-2 3m-5-8-2 4m-6-6-1 3m-8-5v4m-8-4v4m-9-2 1 3m-9 0 2 3m-9 1 2 3m-9 2 3 3m-8 4 3 2m-8 5 4 2m-7 6 4 1m-4 25 4-1m-2 5 7-3m-6 7 4-2m-2 6 7-4m-13-21h8m41-41v-8m0 99v-8m49-42h-8' transform='translate(-65 8)' /%3E%3C/svg%3E)
[Source](https://developer.mozilla.org/docs/Web/API/MediaDevices/getUserMedia)
### `MediaDevices.getSupportedConstraints()`
Browser Support
- ' d='M96 183a64 64 0 0 1-23-23L17 64a128 128 0 0 0 111 192l55-96a64 64 0 0 1-87 23Z'/%3E%3Cpath fill='url(%23b)' d='M192 128a64 64 0 0 1-9 32l-55 96A128 128 0 0 0 239 64H128a64 64 0 0 1 64 64Z'/%3E%3Ccircle cx='128' cy='128' r='52' fill='%231a73e8'/%3E%3Cpath fill='url(%23c)' d='M96 73a64 64 0 0 1 32-9h111a128 128 0 0 0-222 0l56 96a64 64 0 0 1 23-87Z'/%3E%3C/svg%3E)
- ' xlink:href='%23A'%3E%3Cstop offset='.76' stop-opacity='0'/%3E%3Cstop offset='.95' stop-opacity='.5'/%3E%3Cstop offset='1'/%3E%3C/radialGradient%3E%3CradialGradient id='F' cx='2523' cy='4680' r='20243' gradientTransform='matrix(-.03715 .99931 -2.12836 -.07913 13579 3530)' xlink:href='%23A'%3E%3Cstop offset='0' stop-color='%2335c1f1'/%3E%3Cstop offset='.11' stop-color='%2334c1ed'/%3E%3Cstop offset='.23' stop-color='%232fc2df'/%3E%3Cstop offset='.31' stop-color='%232bc3d2'/%3E%3Cstop offset='.67' stop-color='%2336c752'/%3E%3C/radialGradient%3E%3CradialGradient id='G' cx='24247' cy='7758' r='9734' gradientTransform='matrix(.28109 .95968 -.78353 .22949 24510 -16292)' xlink:href='%23A'%3E%3Cstop offset='0' stop-color='%2366eb6e'/%3E%3Cstop offset='1' stop-color='%2366eb6e' stop-opacity='0'/%3E%3C/radialGradient%3E%3Cpath id='H' d='M24105 20053a9345 9345 0 01-1053 472 10202 10202 0 01-3590 646c-4732 0-8855-3255-8855-7432 0-1175 680-2193 1643-2729-4280 180-5380 4640-5380 7253 0 7387 6810 8137 8276 8137 791 0 1984-230 2704-456l130-44a12834 12834 0 006660-5282c220-350-168-757-535-565z'/%3E%3Cpath id='I' d='M11571 25141a7913 7913 0 01-2273-2137 8145 8145 0 01-1514-4740 8093 8093 0 013093-6395 8082 8082 0 011373-859c312-148 846-414 1554-404a3236 3236 0 012569 1297 3184 3184 0 01636 1866c0-21 2446-7960-8005-7960-4390 0-8004 4166-8004 7820 0 2319 538 4170 1212 5604a12833 12833 0 007684 6757 12795 12795 0 003908 610c1414 0 2774-233 4045-656a7575 7575 0 01-6278-803z'/%3E%3Cpath id='J' d='M16231 15886c-80 105-330 250-330 566 0 260 170 512 472 723 1438 1003 4149 868 4156 868a5954 5954 0 003027-839 6147 6147 0 001133-850 6180 6180 0 001910-4437c26-2242-796-3732-1133-4392-2120-4141-6694-6525-11668-6525-7011 0-12703 5635-12798 12620 47-3654 3679-6605 7996-6605 350 0 2346 34 4200 1007 1634 858 2490 1894 3086 2921 618 1067 728 2415 728 2952s-271 1333-780 1990z'/%3E%3Cuse fill='url(%23B)' xlink:href='%23H'/%3E%3Cuse fill='url(%23D)' opacity='.35' xlink:href='%23H'/%3E%3Cuse fill='url(%23C)' xlink:href='%23I'/%3E%3Cuse fill='url(%23E)' opacity='.4' xlink:href='%23I'/%3E%3Cuse fill='url(%23F)' xlink:href='%23J'/%3E%3Cuse fill='url(%23G)' xlink:href='%23J'/%3E%3C/svg%3E)
- ' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.2' stop-color='%239059ff' stop-opacity='0'/%3E%3Cstop offset='.3' stop-color='%238c4ff3' stop-opacity='.1'/%3E%3Cstop offset='.8' stop-color='%237716a8' stop-opacity='.5'/%3E%3Cstop offset='1' stop-color='%236e008b' stop-opacity='.6'/%3E%3C/radialGradient%3E%3CradialGradient id='ff-g' cx='239.1' cy='34.6' r='171.6' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='0' stop-color='%23ffe226'/%3E%3Cstop offset='.1' stop-color='%23ffdb27'/%3E%3Cstop offset='.3' stop-color='%23ffc82a'/%3E%3Cstop offset='.5' stop-color='%23ffa930'/%3E%3Cstop offset='.7' stop-color='%23ff7e37'/%3E%3Cstop offset='.8' stop-color='%23ff7139'/%3E%3C/radialGradient%3E%3CradialGradient id='ff-h' cx='374' cy='-74.3' r='732.2' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.1' stop-color='%23fff44f'/%3E%3Cstop offset='.5' stop-color='%23ff980e'/%3E%3Cstop offset='.6' stop-color='%23ff5634'/%3E%3Cstop offset='.7' stop-color='%23ff3647'/%3E%3Cstop offset='.9' stop-color='%23e31587'/%3E%3C/radialGradient%3E%3CradialGradient id='ff-i' cx='304.6' cy='7.1' r='536.4' gradientTransform='rotate(84 303 4)' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='0' stop-color='%23fff44f'/%3E%3Cstop offset='.1' stop-color='%23ffe847'/%3E%3Cstop offset='.2' stop-color='%23ffc830'/%3E%3Cstop offset='.3' stop-color='%23ff980e'/%3E%3Cstop offset='.4' stop-color='%23ff8b16'/%3E%3Cstop offset='.5' stop-color='%23ff672a'/%3E%3Cstop offset='.6' stop-color='%23ff3647'/%3E%3Cstop offset='.7' stop-color='%23e31587'/%3E%3C/radialGradient%3E%3CradialGradient id='ff-j' cx='235' cy='98.1' r='457.1' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.1' stop-color='%23fff44f'/%3E%3Cstop offset='.5' stop-color='%23ff980e'/%3E%3Cstop offset='.6' stop-color='%23ff5634'/%3E%3Cstop offset='.7' stop-color='%23ff3647'/%3E%3Cstop offset='.9' stop-color='%23e31587'/%3E%3C/radialGradient%3E%3CradialGradient id='ff-k' cx='355.7' cy='124.9' r='500.3' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.1' stop-color='%23fff44f'/%3E%3Cstop offset='.2' stop-color='%23ffe141'/%3E%3Cstop offset='.5' stop-color='%23ffaf1e'/%3E%3Cstop offset='.6' stop-color='%23ff980e'/%3E%3C/radialGradient%3E%3ClinearGradient id='ff-a' x1='446.9' y1='76.8' x2='47.9' y2='461.8' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.1' stop-color='%23fff44f'/%3E%3Cstop offset='.1' stop-color='%23ffe847'/%3E%3Cstop offset='.2' stop-color='%23ffc830'/%3E%3Cstop offset='.4' stop-color='%23ff980e'/%3E%3Cstop offset='.4' stop-color='%23ff8b16'/%3E%3Cstop offset='.5' stop-color='%23ff672a'/%3E%3Cstop offset='.5' stop-color='%23ff3647'/%3E%3Cstop offset='.7' stop-color='%23e31587'/%3E%3C/linearGradient%3E%3ClinearGradient id='ff-l' x1='442.1' y1='74.8' x2='102.6' y2='414.3' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.2' stop-color='%23fff44f' stop-opacity='.8'/%3E%3Cstop offset='.3' stop-color='%23fff44f' stop-opacity='.6'/%3E%3Cstop offset='.5' stop-color='%23fff44f' stop-opacity='.2'/%3E%3Cstop offset='.6' stop-color='%23fff44f' stop-opacity='0'/%3E%3C/linearGradient%3E%3C/defs%3E%3Cpath d='M479 166c-11-25-32-52-49-60a249 249 0 0 1 25 73c-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-60 35-81 101-83 134a120 120 0 0 0-66 25 71 71 0 0 0-6-5 111 111 0 0 1-1-58c-25 11-44 29-58 44-9-12-9-52-8-60l-8 4a175 175 0 0 0-24 21 210 210 0 0 0-22 26 203 203 0 0 0-32 73l-1 2-2 15a229 229 0 0 0-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121zM202 355l3 1-3-1zm55-145zm198-31z' fill='url(%23ff-a)'/%3E%3Cpath d='M479 166c-11-25-32-52-49-60 14 26 22 53 25 72v1a207 207 0 0 1-206 279c-113-3-212-87-231-197-3-17 0-26 2-40-2 11-3 14-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121z' fill='url(%23ff-b)'/%3E%3Cpath d='M479 166c-11-25-32-52-49-60 14 26 22 53 25 72v1a207 207 0 0 1-206 279c-113-3-212-87-231-197-3-17 0-26 2-40-2 11-3 14-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121z' fill='url(%23ff-c)'/%3E%3Cpath d='m362 195 1 1a130 130 0 0 0-22-29C266 92 322 5 331 0c-60 35-81 101-83 134l9-1c45 0 84 25 105 62z' fill='url(%23ff-d)'/%3E%3Cpath d='M257 210c-1 6-22 26-29 26-68 0-80 41-80 41 3 35 28 64 57 79l4 2 7 3a107 107 0 0 0 31 6c120 6 143-143 57-186 22-4 45 5 58 14-21-37-60-62-105-62l-9 1a120 120 0 0 0-66 25l17 16c16 16 58 33 58 35z' fill='url(%23ff-e)'/%3E%3Cpath d='M257 210c-1 6-22 26-29 26-68 0-80 41-80 41 3 35 28 64 57 79l4 2 7 3a107 107 0 0 0 31 6c120 6 143-143 57-186 22-4 45 5 58 14-21-37-60-62-105-62l-9 1a120 120 0 0 0-66 25l17 16c16 16 58 33 58 35z' fill='url(%23ff-f)'/%3E%3Cpath d='m171 151 5 3a111 111 0 0 1-1-58c-25 11-44 29-58 44 1 0 36 0 54 11z' fill='url(%23ff-g)'/%3E%3Cpath d='M18 261a242 242 0 0 0 231 197 207 207 0 0 0 206-279c8 56-20 110-64 146-86 71-169 43-186 31l-3-1c-50-24-71-70-67-110-42 0-57-35-57-35s38-28 89-4c46 22 90 4 90 4 0-2-42-19-58-35l-17-16a71 71 0 0 0-6-5l-5-3c-18-11-52-11-54-11-9-12-9-51-8-60l-8 4a175 175 0 0 0-24 21 210 210 0 0 0-22 26 203 203 0 0 0-32 73c0 1-9 38-5 57z' fill='url(%23ff-h)'/%3E%3Cpath d='M341 167a130 130 0 0 1 22 29 46 46 0 0 1 4 3c55 50 26 121 24 126 44-36 72-90 64-146-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-9 5-65 92 10 167z' fill='url(%23ff-i)'/%3E%3Cpath d='M367 199a46 46 0 0 0-4-3l-1-1c-13-9-36-18-58-15 86 44 63 193-57 187a107 107 0 0 1-31-6 131 131 0 0 1-11-5c17 12 99 39 186-31 2-5 31-76-24-126z' fill='url(%23ff-j)'/%3E%3Cpath d='M148 277s12-41 80-41c7 0 28-20 29-26s-44 18-90-4c-51-24-89 4-89 4s15 35 57 35c-4 40 16 85 67 110l3 1c-29-15-54-44-57-79z' fill='url(%23ff-k)'/%3E%3Cpath d='M479 166c-11-25-32-52-49-60a249 249 0 0 1 25 73c-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-60 35-81 101-83 134l9-1c45 0 84 25 105 62-13-9-36-18-58-14 86 43 63 192-57 186a107 107 0 0 1-31-6 131 131 0 0 1-11-5l-3-1 3 1c-29-15-54-44-57-79 0 0 12-41 80-41 7 0 28-20 29-26 0-2-42-19-58-35l-17-16a71 71 0 0 0-6-5 111 111 0 0 1-1-58c-25 11-44 29-58 44-9-12-9-52-8-60l-8 4a175 175 0 0 0-24 21 210 210 0 0 0-22 26 203 203 0 0 0-32 73l-1 2-2 15a279 279 0 0 0-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121zm-24 13z' fill='url(%23ff-l)'/%3E%3C/svg%3E)
- ' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%2324a5f3' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%231e8ceb' /%3E%3C/radialGradient%3E%3CradialGradient id='s-j' cx='109.3' cy='13.8' r='93.1' gradientTransform='matrix(-.02 1.1 -1.04 -.02 137 -115)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235488d6' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235d96eb' /%3E%3C/radialGradient%3E%3C/defs%3E%3Crect width='220' height='220' x='22' y='-107' fill='url(%23s-a)' ry='49' transform='matrix(.57 0 0 .57 187 256)' /%3E%3Cg transform='translate(194 190)'%3E%3Ccircle cx='67.8' cy='67.7' fill='url(%23s-c)' paint-order='stroke fill markers' r='54' /%3E%3Ccircle cx='-69.9' cy='69.3' fill='url(%23s-i)' transform='translate(138 -2)' r='54' /%3E%3C/g%3E%3Cellipse cx='120' cy='14.2' fill='url(%23s-j)' rx='93.1' ry='93.7' transform='matrix(.58 0 0 .58 192 250)' /%3E%3Cg transform='matrix(.58 0 0 .57 197 182)'%3E%3Cpath fill='%23cac7c8' d='M46 192h1l72-48-7-9-66 57Z' /%3E%3Cpath fill='%23fbfffc' d='M46 191v1l66-57-7-9-59 65Z' /%3E%3Cpath fill='url(%23s-d)' d='m119 144-7-9 66-57-59 66Z' /%3E%3Cpath fill='%23fb645c' d='m105 126 7 9 66-57-1-1-72 49Z' /%3E%3C/g%3E%3Cpath stroke='%23fff' stroke-linecap='round' stroke-miterlimit='1' stroke-width='1.3' d='m287 278 3-2m-12-17 8-2m-8-3h4m-4-13 8 2m-8 3h4m-1-13 7 3m-4-11 7 4m-2-11 6 6m0-12 6 7m1-11 4 6m4-10 3 7m5-9 2 7m15-7-1 7m10-5-3 7m11-4-4 7m11-2-5 6m16 7-7 4m10 4-7 3m10 6-8 1m8 16-8-2m5 10-7-3m4 11-7-4m2 11-6-5m0 11-5-6m-2 11-4-7m-4 11-3-8m-6 10-1-8m-16 8 2-8m-10 5 3-7m-11 4 4-7m-11 2 5-6m-8 3 3-3m4 8 2-3m5 8 2-4m6 7 1-4m8 5v-4m8 4v-4m9 3-1-4m9 1-2-4m9 0-2-4m9-2-3-3m8-4-3-2m8-5-4-2m7-6-4-1m5-8h-4m4-8h-4m3-9-4 1m1-9-4 2m-1-9-3 2m-2-9-3 3m-4-8-2 3m-5-8-2 4m-6-6-1 3m-8-5v4m-8-4v4m-9-2 1 3m-9 0 2 3m-9 1 2 3m-9 2 3 3m-8 4 3 2m-8 5 4 2m-7 6 4 1m-4 25 4-1m-2 5 7-3m-6 7 4-2m-2 6 7-4m-13-21h8m41-41v-8m0 99v-8m49-42h-8' transform='translate(-65 8)' /%3E%3C/svg%3E)
[Source](https://developer.mozilla.org/docs/Web/API/MediaDevices/getSupportedConstraints)
### `MediaStreamTrack.applyConstraints()`
Browser Support
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stop-color='%23fff44f' stop-opacity='.2'/%3E%3Cstop offset='.6' stop-color='%23fff44f' stop-opacity='0'/%3E%3C/linearGradient%3E%3C/defs%3E%3Cpath d='M479 166c-11-25-32-52-49-60a249 249 0 0 1 25 73c-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-60 35-81 101-83 134a120 120 0 0 0-66 25 71 71 0 0 0-6-5 111 111 0 0 1-1-58c-25 11-44 29-58 44-9-12-9-52-8-60l-8 4a175 175 0 0 0-24 21 210 210 0 0 0-22 26 203 203 0 0 0-32 73l-1 2-2 15a229 229 0 0 0-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121zM202 355l3 1-3-1zm55-145zm198-31z' fill='url(%23ff-a)'/%3E%3Cpath d='M479 166c-11-25-32-52-49-60 14 26 22 53 25 72v1a207 207 0 0 1-206 279c-113-3-212-87-231-197-3-17 0-26 2-40-2 11-3 14-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121z' fill='url(%23ff-b)'/%3E%3Cpath d='M479 166c-11-25-32-52-49-60 14 26 22 53 25 72v1a207 207 0 0 1-206 279c-113-3-212-87-231-197-3-17 0-26 2-40-2 11-3 14-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121z' fill='url(%23ff-c)'/%3E%3Cpath d='m362 195 1 1a130 130 0 0 0-22-29C266 92 322 5 331 0c-60 35-81 101-83 134l9-1c45 0 84 25 105 62z' fill='url(%23ff-d)'/%3E%3Cpath d='M257 210c-1 6-22 26-29 26-68 0-80 41-80 41 3 35 28 64 57 79l4 2 7 3a107 107 0 0 0 31 6c120 6 143-143 57-186 22-4 45 5 58 14-21-37-60-62-105-62l-9 1a120 120 0 0 0-66 25l17 16c16 16 58 33 58 35z' fill='url(%23ff-e)'/%3E%3Cpath d='M257 210c-1 6-22 26-29 26-68 0-80 41-80 41 3 35 28 64 57 79l4 2 7 3a107 107 0 0 0 31 6c120 6 143-143 57-186 22-4 45 5 58 14-21-37-60-62-105-62l-9 1a120 120 0 0 0-66 25l17 16c16 16 58 33 58 35z' fill='url(%23ff-f)'/%3E%3Cpath d='m171 151 5 3a111 111 0 0 1-1-58c-25 11-44 29-58 44 1 0 36 0 54 11z' fill='url(%23ff-g)'/%3E%3Cpath d='M18 261a242 242 0 0 0 231 197 207 207 0 0 0 206-279c8 56-20 110-64 146-86 71-169 43-186 31l-3-1c-50-24-71-70-67-110-42 0-57-35-57-35s38-28 89-4c46 22 90 4 90 4 0-2-42-19-58-35l-17-16a71 71 0 0 0-6-5l-5-3c-18-11-52-11-54-11-9-12-9-51-8-60l-8 4a175 175 0 0 0-24 21 210 210 0 0 0-22 26 203 203 0 0 0-32 73c0 1-9 38-5 57z' fill='url(%23ff-h)'/%3E%3Cpath d='M341 167a130 130 0 0 1 22 29 46 46 0 0 1 4 3c55 50 26 121 24 126 44-36 72-90 64-146-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-9 5-65 92 10 167z' fill='url(%23ff-i)'/%3E%3Cpath d='M367 199a46 46 0 0 0-4-3l-1-1c-13-9-36-18-58-15 86 44 63 193-57 187a107 107 0 0 1-31-6 131 131 0 0 1-11-5c17 12 99 39 186-31 2-5 31-76-24-126z' fill='url(%23ff-j)'/%3E%3Cpath d='M148 277s12-41 80-41c7 0 28-20 29-26s-44 18-90-4c-51-24-89 4-89 4s15 35 57 35c-4 40 16 85 67 110l3 1c-29-15-54-44-57-79z' fill='url(%23ff-k)'/%3E%3Cpath d='M479 166c-11-25-32-52-49-60a249 249 0 0 1 25 73c-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-60 35-81 101-83 134l9-1c45 0 84 25 105 62-13-9-36-18-58-14 86 43 63 192-57 186a107 107 0 0 1-31-6 131 131 0 0 1-11-5l-3-1 3 1c-29-15-54-44-57-79 0 0 12-41 80-41 7 0 28-20 29-26 0-2-42-19-58-35l-17-16a71 71 0 0 0-6-5 111 111 0 0 1-1-58c-25 11-44 29-58 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- ' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%2324a5f3' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%231e8ceb' /%3E%3C/radialGradient%3E%3CradialGradient id='s-j' cx='109.3' cy='13.8' r='93.1' gradientTransform='matrix(-.02 1.1 -1.04 -.02 137 -115)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235488d6' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235d96eb' /%3E%3C/radialGradient%3E%3C/defs%3E%3Crect width='220' height='220' x='22' y='-107' fill='url(%23s-a)' ry='49' transform='matrix(.57 0 0 .57 187 256)' /%3E%3Cg transform='translate(194 190)'%3E%3Ccircle cx='67.8' cy='67.7' fill='url(%23s-c)' paint-order='stroke fill markers' r='54' /%3E%3Ccircle cx='-69.9' cy='69.3' fill='url(%23s-i)' transform='translate(138 -2)' r='54' /%3E%3C/g%3E%3Cellipse cx='120' cy='14.2' fill='url(%23s-j)' rx='93.1' ry='93.7' transform='matrix(.58 0 0 .58 192 250)' /%3E%3Cg transform='matrix(.58 0 0 .57 197 182)'%3E%3Cpath fill='%23cac7c8' d='M46 192h1l72-48-7-9-66 57Z' /%3E%3Cpath fill='%23fbfffc' d='M46 191v1l66-57-7-9-59 65Z' /%3E%3Cpath fill='url(%23s-d)' d='m119 144-7-9 66-57-59 66Z' /%3E%3Cpath fill='%23fb645c' d='m105 126 7 9 66-57-1-1-72 49Z' /%3E%3C/g%3E%3Cpath stroke='%23fff' stroke-linecap='round' stroke-miterlimit='1' stroke-width='1.3' d='m287 278 3-2m-12-17 8-2m-8-3h4m-4-13 8 2m-8 3h4m-1-13 7 3m-4-11 7 4m-2-11 6 6m0-12 6 7m1-11 4 6m4-10 3 7m5-9 2 7m15-7-1 7m10-5-3 7m11-4-4 7m11-2-5 6m16 7-7 4m10 4-7 3m10 6-8 1m8 16-8-2m5 10-7-3m4 11-7-4m2 11-6-5m0 11-5-6m-2 11-4-7m-4 11-3-8m-6 10-1-8m-16 8 2-8m-10 5 3-7m-11 4 4-7m-11 2 5-6m-8 3 3-3m4 8 2-3m5 8 2-4m6 7 1-4m8 5v-4m8 4v-4m9 3-1-4m9 1-2-4m9 0-2-4m9-2-3-3m8-4-3-2m8-5-4-2m7-6-4-1m5-8h-4m4-8h-4m3-9-4 1m1-9-4 2m-1-9-3 2m-2-9-3 3m-4-8-2 3m-5-8-2 4m-6-6-1 3m-8-5v4m-8-4v4m-9-2 1 3m-9 0 2 3m-9 1 2 3m-9 2 3 3m-8 4 3 2m-8 5 4 2m-7 6 4 1m-4 25 4-1m-2 5 7-3m-6 7 4-2m-2 6 7-4m-13-21h8m41-41v-8m0 99v-8m49-42h-8' transform='translate(-65 8)' /%3E%3C/svg%3E)
[Source](https://developer.mozilla.org/docs/Web/API/MediaStreamTrack/applyConstraints)
### `MediaStreamTrack.getCapabilities()`
Browser Support
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38-5 57z' fill='url(%23ff-h)'/%3E%3Cpath d='M341 167a130 130 0 0 1 22 29 46 46 0 0 1 4 3c55 50 26 121 24 126 44-36 72-90 64-146-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-9 5-65 92 10 167z' fill='url(%23ff-i)'/%3E%3Cpath d='M367 199a46 46 0 0 0-4-3l-1-1c-13-9-36-18-58-15 86 44 63 193-57 187a107 107 0 0 1-31-6 131 131 0 0 1-11-5c17 12 99 39 186-31 2-5 31-76-24-126z' fill='url(%23ff-j)'/%3E%3Cpath d='M148 277s12-41 80-41c7 0 28-20 29-26s-44 18-90-4c-51-24-89 4-89 4s15 35 57 35c-4 40 16 85 67 110l3 1c-29-15-54-44-57-79z' fill='url(%23ff-k)'/%3E%3Cpath d='M479 166c-11-25-32-52-49-60a249 249 0 0 1 25 73c-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-60 35-81 101-83 134l9-1c45 0 84 25 105 62-13-9-36-18-58-14 86 43 63 192-57 186a107 107 0 0 1-31-6 131 131 0 0 1-11-5l-3-1 3 1c-29-15-54-44-57-79 0 0 12-41 80-41 7 0 28-20 29-26 0-2-42-19-58-35l-17-16a71 71 0 0 0-6-5 111 111 0 0 1-1-58c-25 11-44 29-58 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- ' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%2324a5f3' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%231e8ceb' /%3E%3C/radialGradient%3E%3CradialGradient id='s-j' cx='109.3' cy='13.8' r='93.1' gradientTransform='matrix(-.02 1.1 -1.04 -.02 137 -115)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235488d6' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235d96eb' /%3E%3C/radialGradient%3E%3C/defs%3E%3Crect width='220' height='220' x='22' y='-107' fill='url(%23s-a)' ry='49' transform='matrix(.57 0 0 .57 187 256)' /%3E%3Cg transform='translate(194 190)'%3E%3Ccircle cx='67.8' cy='67.7' fill='url(%23s-c)' paint-order='stroke fill markers' r='54' /%3E%3Ccircle cx='-69.9' cy='69.3' fill='url(%23s-i)' transform='translate(138 -2)' r='54' /%3E%3C/g%3E%3Cellipse cx='120' cy='14.2' fill='url(%23s-j)' rx='93.1' ry='93.7' transform='matrix(.58 0 0 .58 192 250)' /%3E%3Cg transform='matrix(.58 0 0 .57 197 182)'%3E%3Cpath fill='%23cac7c8' d='M46 192h1l72-48-7-9-66 57Z' /%3E%3Cpath fill='%23fbfffc' d='M46 191v1l66-57-7-9-59 65Z' /%3E%3Cpath fill='url(%23s-d)' d='m119 144-7-9 66-57-59 66Z' /%3E%3Cpath fill='%23fb645c' d='m105 126 7 9 66-57-1-1-72 49Z' /%3E%3C/g%3E%3Cpath stroke='%23fff' stroke-linecap='round' stroke-miterlimit='1' stroke-width='1.3' d='m287 278 3-2m-12-17 8-2m-8-3h4m-4-13 8 2m-8 3h4m-1-13 7 3m-4-11 7 4m-2-11 6 6m0-12 6 7m1-11 4 6m4-10 3 7m5-9 2 7m15-7-1 7m10-5-3 7m11-4-4 7m11-2-5 6m16 7-7 4m10 4-7 3m10 6-8 1m8 16-8-2m5 10-7-3m4 11-7-4m2 11-6-5m0 11-5-6m-2 11-4-7m-4 11-3-8m-6 10-1-8m-16 8 2-8m-10 5 3-7m-11 4 4-7m-11 2 5-6m-8 3 3-3m4 8 2-3m5 8 2-4m6 7 1-4m8 5v-4m8 4v-4m9 3-1-4m9 1-2-4m9 0-2-4m9-2-3-3m8-4-3-2m8-5-4-2m7-6-4-1m5-8h-4m4-8h-4m3-9-4 1m1-9-4 2m-1-9-3 2m-2-9-3 3m-4-8-2 3m-5-8-2 4m-6-6-1 3m-8-5v4m-8-4v4m-9-2 1 3m-9 0 2 3m-9 1 2 3m-9 2 3 3m-8 4 3 2m-8 5 4 2m-7 6 4 1m-4 25 4-1m-2 5 7-3m-6 7 4-2m-2 6 7-4m-13-21h8m41-41v-8m0 99v-8m49-42h-8' transform='translate(-65 8)' /%3E%3C/svg%3E)
[Source](https://developer.mozilla.org/docs/Web/API/MediaStreamTrack/getCapabilities)
### `MediaStreamTrack.getSettings()`
Browser Support
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[Source](https://developer.mozilla.org/docs/Web/API/MediaStreamTrack/getSettings)
## Helpful links
- [PTZ Explainer](https://github.com/w3c/mediacapture-image/blob/master/ptz-explainer.md)
- [Specification draft](https://w3c.github.io/mediacapture-image/)
- [GitHub repository](https://github.com/w3c/mediacapture-image)
- [ChromeStatus entry](https://www.chromestatus.com/feature/5570717087170560)
- [Chrome tracking bug](https://bugs.chromium.org/p/chromium/issues/detail?id=934063)
## Acknowledgements
This article was reviewed by [Joe Medley](https://github.com/jpmedley) and [Thomas Steiner](https://github.com/tomayac).
Thanks to [Rijubrata Bhaumik](https://github.com/riju) and [Eero Häkkinen](https://github.com/eehakkin) at Intel for their work on the
spec and the implementation.