I have an video app for the FireTV and voice commands for play, pause, skipNext, skipPrev work fine, but when calling fastforward and rewind Alexa says it's "not supported".
I'm using MediaSessionCompat and MediaSessionCompat.Callback. In the Callback I have overridden onSeekTo, onRewind, and onFastForward but it still says it's not supported.
Also have the Alexa voice command permission in manifest
<uses-permission android:name="com.amazon.permission.media.session.voicecommandcontrol" />
My only hunch is that I might need to use the Video Skill API for that functionality.
Any insights Appreciated!