[Webkit-unassigned] [Bug 258312] New: getUserMedia produces different results for the same constraints

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=258312

            Bug ID: 258312
           Summary: getUserMedia produces different results for the same
                    constraints
           Product: WebKit
           Version: Safari 16
          Hardware: iPhone / iPad
                OS: iOS 16
            Status: NEW
          Severity: Major
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: burzomirdev at gmail.com
                CC: youennf at gmail.com

Video track constraints aren't correctly applied and calling getUserMedia two times in the row with the same constraints provides different results. First time camera tracks is in portrait orientation and ignores constraints that tell it should be landscape. Second time it looks like camera track in portrait orientation is cropped to match the constraints.

https://replit.com/@burzomir/iOS-165-getUserMedia-portrait-video-constraints-issue#index.html

To reproduce open this page on iOS 16.5: https://ios-165-getusermedia-portrait-video-constraints-issue.burzomir.repl.co

```
async function start(stopFirstStream) {
      const firstVideo = document.querySelector('#first-video')
      const secondVideo = document.querySelector('#second-video')

      const constraints = {
        video: {
          width: { ideal: 1280 },
          height: { ideal: 720 }
        }
      }

      const firstStream = await navigator.mediaDevices.getUserMedia(constraints)
      firstVideo.srcObject = firstStream

      // first stream provides a track in a portrait orientation
      // ignoring landscape constraints
      // if not stopped before getting the seconds stream
      // the video track provided by the second stream is cut to match constraints
      // tested on iPhone XS iOS 16.5
      if (stopFirstStream) {
        firstStream.getTracks().forEach(track => {
          track.stop()
        })
      }

      const secondStream = await navigator.mediaDevices.getUserMedia(constraints)
      secondVideo.srcObject = secondStream
    }
```

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