# What does onPlay/onStop mean at all?

**URL:** <https://community.wowza.com/t/what-does-onplay-onstop-mean-at-all/43818>\
**Category:** Wowza Streaming Engine\
**Created:** [October 31, 2014, 2:31pm UTC](https://community.wowza.com/t/what-does-onplay-onstop-mean-at-all/43818 "2014-10-31T14:31:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mauricio\_Antunes](https://avatars.discourse-cdn.com/v4/letter/m/5daacb/32.png) [@Mauricio\_Antunes](https://community.wowza.com/u/Mauricio_Antunes)\
**Post date:** [October 31, 2014, 2:31pm UTC](https://community.wowza.com/t/what-does-onplay-onstop-mean-at-all/43818/1 "2014-10-31T14:31:12Z")

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What is onPlay and Stop in the Java API?

I have noticed that onPlay/onStop execute for RTMP and RTSP.

It is a little bit confused since there is IRTSPActionNotify ([https://www.wowza.com/docs/how-to-use-the-irtspactionnotify-interface-to-listen-for-rtsp-stream-events](https://www.wowza.com/docs/how-to-use-the-irtspactionnotify-interface-to-listen-for-rtsp-stream-events)).

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**Author:** ![Mauricio\_Antunes](https://avatars.discourse-cdn.com/v4/letter/m/5daacb/32.png) [@Mauricio\_Antunes](https://community.wowza.com/u/Mauricio_Antunes)\
**Post date:** [November 3, 2014, 9:38am UTC](https://community.wowza.com/t/what-does-onplay-onstop-mean-at-all/43818/2 "2014-11-03T09:38:19Z")

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Anyone? 🙂