# Image filter iOS App

**URL:** <https://community.wowza.com/t/image-filter-ios-app/47730>\
**Category:** Wowza GoCoder SDK\
**Created:** [November 19, 2016, 4:06pm UTC](https://community.wowza.com/t/image-filter-ios-app/47730 "2016-11-19T16:06:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Moamen\_El-Tahwagi](https://avatars.discourse-cdn.com/v4/letter/m/3ab097/32.png) [@Moamen\_El-Tahwagi](https://community.wowza.com/u/Moamen_El-Tahwagi)\
**Post date:** [November 19, 2016, 4:06pm UTC](https://community.wowza.com/t/image-filter-ios-app/47730/1 "2016-11-19T16:06:55Z")

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I am creating an iOS Swift app that uploads to a wowza server using the gocoder sdk.

I looked at your sample code to implement real time black and white image filter.

The provided solutions works fine for the uploaded video, but the preview while recording is not affected by the effect.

Any idea, how to apply it also to the preview?

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**Author:** ![Moamen\_El-Tahwagi](https://avatars.discourse-cdn.com/v4/letter/m/3ab097/32.png) [@Moamen\_El-Tahwagi](https://community.wowza.com/u/Moamen_El-Tahwagi)\
**Post date:** [December 5, 2016, 12:15am UTC](https://community.wowza.com/t/image-filter-ios-app/47730/2 "2016-12-05T00:15:43Z")

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No one any idea ?

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**Author:** ![Michelle\_B](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/michelle_b/32/394_2.png) [@Michelle\_B](https://community.wowza.com/u/Michelle_B)\
**Post date:** [December 29, 2016, 9:49pm UTC](https://community.wowza.com/t/image-filter-ios-app/47730/3 "2016-12-29T21:49:35Z")

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Hi,

This is not currently supported in the GoCoder SDK. You will need to use your own preview mechanism to see the filter on the Camera Preview.

Michelle