I'm using https://github.com/google/shaka-player/tree/master/demo/cast_receiver
with iOS client and android Client. My iOS it's base on:
https://github.com/googlecast/CastVideos-ios
With Android there is no problem doing seek, pause, play on miniplayer or extended controller provided from google, when a i cast a video on shaka player receiver.
In iOS i receive this messages:
-[GCKMediaControlChannel mediaSessionID] Calling a method that requires a media status with no media status, ignoring; make sure that media is loaded, the media channel has received a status, and that this method is not being called while the device manager is attempting to reconnect
and other logs:
-[GCKUIMediaController updateTransportControls] updateTransportControls; mediaclient is , mediaStatus is , _currentRequest is -[GCKUIMediaController request:didFailWithError:] request 15 failed with error Error Domain=com.google.GCKError Code=32 "No media session is available" UserInfo={NSLocalizedDescription=No media session is available}