https://developer.apple.com/library/content/samplecode/StitchedStreamPlayer/Introduction/Intro.html
iOHS/StitchedStreamPlayer
https://developer.apple.com/library/content/samplecode/StitchedStreamPlayer/Introduction/Intro.html
Objective-C
https://developer.apple.com/library/content/samplecode/StitchedStreamPlayer/Introduction/Intro.html
Objective-C