Open Radar

 
Summary:

When an AVPlayer is instantiated and visible in the application and AirPlay mode is already active (routed to an Apple TV device) an HLS asset will report a duration of exactly 1 second, no matter how long the actual video is.

Steps to Reproduce:

* Create the App:
 * Create a Single View application in XCode 
 * In the ViewController, instantiate an AVPlayer
 * Use an AVPlayerLayer to attach the AVPlayer to the ViewController's view,
 * Use an MPVolumeView to expose the AirPlay button,
 * Instantiate an AVPlayerItem which points to an HLS asset,
 * Use KVO to watch the item's duration property for changes, log duration values received to the console,
 * Use the AVPlayer's replaceCurrentItemWithPlayerItem: method to set the AVPlayerItem,

* Run the app:
 * Run the app on an iPad or iPhone running iOS 5.0 or higher
 * In the running app, use the MPVolumeView AirPlay button to pair with an Apple TV running iOS 5.1
 * With the AVPlayer still streaming to the Apple TV, kill the app and relaunch (this is to ensure that the player is tethered to the external device during initialization)
 * The app should now be running, paired with the AppleTV

Expected Results:

* As better duration information becomes available, the duration reported by KVO should match the actual underlying asset.

Actual Results:

* Irrespective of the actual length of the HLS movie, the duration is reported as 1 second

Regression:

* We did not see this behavior on Apple TV devices running iOS 5.0.2

Notes:

* One workaround we've found is to set allowsExternalPlayback (allowsAirPlayVideo) to NO until a non-1 duration has been reported by the AVPlayerItem.