Subscribing to audio or video only

By default, a subscriber is initialized to subscribe to audio and video, if they are available. You can toggle audio on or off by calling the otc_subscriber_set_subscribe_to_audio(otc_subscriber *subscriber, otc_bool subscribe_to_audio) :

You can toggle video on or off by calling the otc_subscriber_set_subscribe_to_video(otc_subscriber *subscriber, otc_bool subscribe_to_video) :