[Webkit-unassigned] [Bug 201137] New: [iOS] MediaRecorder video capturing results incorrect video orientation

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=201137

            Bug ID: 201137
           Summary: [iOS] MediaRecorder video capturing results incorrect
                    video orientation
           Product: WebKit
           Version: Safari 12
          Hardware: iPhone / iPad
                OS: iOS 12
            Status: NEW
          Severity: Blocker
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: boris.stodic at daon.com
                CC: youennf at gmail.com

Created attachment 377239

  --> https://bugs.webkit.org/attachment.cgi?id=377239&action=review

source code + encoded video sample

I am using MediaRecorder API on safari to capture video('video/webm;codecs=H264'). There is an issue with orientation of captured video, it has been rotated by 90 degrees counterclockwise and squashed which makes video unusable. I attached source code which demonstrates video capturing via MediaRecorder, aswell as sample of video recorded. Steps to reproduce bug:

1. Run attached demo in safari ios

2. Hit "start camera" button to initialize camera (navigator.mediaDevices.getUserMedia(constraints))

3. Hit "start recording" button to init video recording (new MediaRecorder(window.stream, options))

4. Hit "stop recording" button to stop video recording

5. Hit "download" to get captured video. 

Note: Safari is not able to playback webm encoded videos so you will have to run video in other browser or application...

Similar issue has already been reported: https://bugs.webkit.org/show_bug.cgi?id=198912
I don't see that any work has been done on this issue yet. I would really appreciate if you can take a look at the issue.


Thank you very much,

Boris

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