VideoStage is using the browsers native <video> integration - which means "it depends" on a users browser / settings / hardware. A Quick Check on can i use shows that the browser support for HEVC / H.265 is complicated / limited: https://caniuse.com/hevc.
As you can see there its not only the browser but also the computer that needs to support it.
Best is to stuck on h.264 for now as you've already done to support as most platforms as possible.
kind regards
Marco
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Thanks for the heads-up; running on v4.3.3 w/o issue, cheers!
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