I am using the YouTube Android Player API to play youtube videos with hardcoded urls within app. That's all I am doing. I am not querying for any ratings, comments information from YouTube.
If this is the case, do I still need a valid YouTube API key? I tried with a dummy key "asdfasdfasdf" and it worked. The video plays in the player in my app.
There is no mention of when an API key is needed in the official documentation. Can I go ahead and release the app in store, or do I still need a valid key? Has anyone experimented with a dummy key?