I'm trying to get captioning working on iOS and Android. Android seems relatively straight forward but I can't seem to figure out how (nor do the docs really tell you) to setup WebVTT captions like you can easily do with Windows 10 UWP and AMP.
On Android I am just doing videoView.AddSubtitleSource and it appears to work. On iOS I'm at a loss. From what I can tell it appears that it's possible to load captions not embedded in the file, but I can't find any example of how it works with MediaSelectionOptions and specifying a stream or similar.
I've done this in my own custom renderer in Xamarin Forms but I'm fine converting it from swift or Objective C if needed.
Anyone get this working or know how?
If your interest is iOS native player, check this tutorial video from Apple: https://developer.apple.com/videos/play/wwdc2012/512/ (about 20 min into it)
If your interest is Safari based player, check the examples here: https://developer.apple.com/streaming/examples/ (3 of the examples include webVTT)
The issue with iOS and Safari not playing back VTT side car files appears to be fixed now in the latest iOS release. Not sure exactly when it was fixed, but I'm on 14.7.1 and the following sample is working now
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