Microsoft Edge Scaling Issue w/JW 7.4.3
We're seeing scaling issues with MBR HLS streams in Edge. The player correctly switches to higher bitrate renditions - confirmed via network analysis and watermarking the video with it's frame size - but within a 360p frame even HD content ends up looking like it's 240p or worse. It seems like the frame size of the initially loaded rendition might get stuck somewhere. Briefly going full screen and back or pressing pause then play again fixes the issue.
This seems specific to JW Player, loading the HLS playlist via a native video tag works as expected.
I'm able to reproduce via the stream tester:
For which Apple's test streams are good candidates: