tvOS has an issue with navigation markers we should report to Apple.
When defining navigation markers for a DVR stream, any navigation marker which lies outside the seekable window is automatically discarded by AVPlayerViewController.
This behavior is good, but sadly can lead to crashes. If the chapter selection UI is displayed while a marker gets out of the window, the UI is namely not correctly refreshed. As a result, attempting to select the last item in the chapter list crashes (the list itself is implemented with a collection view).
There is no issue when no marker list change occurs while the UI is visible.
Issue type
Help / documentation
Reproducibility
Always reproducible
Steps to reproduce
Open the tvOS demo and the DVR segment example. This example has a first segment starting at the 5th second.
Quickly reveal the chapter selection UI by swiping down on the remote.
Wait ~10 seconds.
Select the last chapter. The application crashes.
Remark: If waiting ~10 seconds before revealing the chapter selection UI, we can see that tvOS automatically discards markers outside the DVR window.
defagos
commented
4 years ago
tvOS has an issue with navigation markers we should report to Apple.
When defining navigation markers for a DVR stream, any navigation marker which lies outside the seekable window is automatically discarded by
AVPlayerViewController.This behavior is good, but sadly can lead to crashes. If the chapter selection UI is displayed while a marker gets out of the window, the UI is namely not correctly refreshed. As a result, attempting to select the last item in the chapter list crashes (the list itself is implemented with a collection view).
There is no issue when no marker list change occurs while the UI is visible.
Issue type
Help / documentation
Reproducibility
Always reproducible
Steps to reproduce
Remark: If waiting ~10 seconds before revealing the chapter selection UI, we can see that tvOS automatically discards markers outside the DVR window.