# RTMP publish stream getting shown as black screen in WOWZA preview player

**URL:** <https://community.wowza.com/t/rtmp-publish-stream-getting-shown-as-black-screen-in-wowza-preview-player/51994>\
**Category:** Wowza Streaming Engine\
**Created:** [September 24, 2018, 4:20pm UTC](https://community.wowza.com/t/rtmp-publish-stream-getting-shown-as-black-screen-in-wowza-preview-player/51994 "2018-09-24T16:20:22Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Rajendra\_Sharma](https://avatars.discourse-cdn.com/v4/letter/r/f14d63/32.png) [@Rajendra\_Sharma](https://community.wowza.com/u/Rajendra_Sharma)\
**Post date:** [September 24, 2018, 4:20pm UTC](https://community.wowza.com/t/rtmp-publish-stream-getting-shown-as-black-screen-in-wowza-preview-player/51994/1 "2018-09-24T16:20:22Z")

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I want to apply beautification filter on wowza camera preview , and i have used GLSurfaceView over it but on streaming preview i am getting black screen. Anyone can help me out to resolve it.