# I want to broadcast my app screen using apple's Replay kit 2 system broadcast. Is it supported by wowza iOS sdk? I didn't find any documentation on how to access wowza sdk in Broadcast extension and upload video buffers?
**URL:** https://community.wowza.com/t/i-want-to-broadcast-my-app-screen-using-apples-replay-kit-2-system-broadcast-is-it-supported-by-wowza-ios-sdk-i-didnt-find-any-documentation-on-how-to-access-wowza-sdk-in-broadcast-extension-and-upload-video-buffers/53196
**Category:** Wowza Streaming Engine
**Created:** [April 19, 2019, 3:22pm UTC](https://community.wowza.com/t/i-want-to-broadcast-my-app-screen-using-apples-replay-kit-2-system-broadcast-is-it-supported-by-wowza-ios-sdk-i-didnt-find-any-documentation-on-how-to-access-wowza-sdk-in-broadcast-extension-and-upload-video-buffers/53196 "2019-04-19T15:22:14Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@waqas\_ali](https://community.wowza.com/u/waqas_ali)
#### Post date: [April 19, 2019, 3:22pm UTC](https://community.wowza.com/t/i-want-to-broadcast-my-app-screen-using-apples-replay-kit-2-system-broadcast-is-it-supported-by-wowza-ios-sdk-i-didnt-find-any-documentation-on-how-to-access-wowza-sdk-in-broadcast-extension-and-upload-video-buffers/53196/1 "2019-04-19T15:22:14Z")
I want to broadcast my app screen using apple’s Replay kit 2 system broadcast. Is it supported by wowza iOS sdk? I didn’t find any documentation on how to access wowza sdk in Broadcast extension and upload/send video buffers to wowza servers?
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### Author:  [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)
#### Post date: [April 19, 2019, 8:09pm UTC](https://community.wowza.com/t/i-want-to-broadcast-my-app-screen-using-apples-replay-kit-2-system-broadcast-is-it-supported-by-wowza-ios-sdk-i-didnt-find-any-documentation-on-how-to-access-wowza-sdk-in-broadcast-extension-and-upload-video-buffers/53196/2 "2019-04-19T20:09:52Z")
No, we do not support this @waqas ali at this time. It is a secure connection only through the SDK encoder to Wowza streaming Engine and Streaming Cloud Servers.
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### Author:  [@Hamza\_Khan](https://community.wowza.com/u/Hamza_Khan)
#### Post date: [April 20, 2019, 10:31am UTC](https://community.wowza.com/t/i-want-to-broadcast-my-app-screen-using-apples-replay-kit-2-system-broadcast-is-it-supported-by-wowza-ios-sdk-i-didnt-find-any-documentation-on-how-to-access-wowza-sdk-in-broadcast-extension-and-upload-video-buffers/53196/3 "2019-04-20T10:31:26Z")
“It is a secure connection only through the SDK encoder to Wowza streaming Engine and Streaming Cloud Servers.”
Can you explain this briefly?
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### Author:  [@Eckart\_Burgwedel](https://community.wowza.com/u/Eckart_Burgwedel)
#### Post date: [March 24, 2020, 1:44pm UTC](https://community.wowza.com/t/i-want-to-broadcast-my-app-screen-using-apples-replay-kit-2-system-broadcast-is-it-supported-by-wowza-ios-sdk-i-didnt-find-any-documentation-on-how-to-access-wowza-sdk-in-broadcast-extension-and-upload-video-buffers/53196/4 "2020-03-24T13:44:07Z")
Has this changed as per today or still no support for iOS system broadcast? Isn’t the Wowza SDK supposed to provide a streaming endpoint/encoder to be used with ReplayKit, regardless whether it’s in-app or an broadcast extension?
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### Author:  [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)
#### Post date: [March 25, 2020, 3:59pm UTC](https://community.wowza.com/t/i-want-to-broadcast-my-app-screen-using-apples-replay-kit-2-system-broadcast-is-it-supported-by-wowza-ios-sdk-i-didnt-find-any-documentation-on-how-to-access-wowza-sdk-in-broadcast-extension-and-upload-video-buffers/53196/5 "2020-03-25T15:59:40Z")
Also suggested:
`// do not process frames if currently ReplayKit bursting rate is too high`
` **let** `` currentFps = Double(captureInfo.frameCounter) / elapsedTime`
` **guard** `` currentFps < STREAM_FRAME_RATE `` **else** `` {`
` **return** `
`}`
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### Author:  [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)
#### Post date: [March 25, 2020, 3:56pm UTC](https://community.wowza.com/t/i-want-to-broadcast-my-app-screen-using-apples-replay-kit-2-system-broadcast-is-it-supported-by-wowza-ios-sdk-i-didnt-find-any-documentation-on-how-to-access-wowza-sdk-in-broadcast-extension-and-upload-video-buffers/53196/6 "2020-03-25T15:56:57Z")
Hello Ekhart, we do support this so I will update this thread:
Look at [https://github.com/WowzaMediaSystems/gocoder-sdk-samples-ios/blob/master/WowzaGoCoderMP4PlayerSample.swift/MP4PlayerViewController.swift](https://github.com/WowzaMediaSystems/gocoder-sdk-samples-ios/blob/master/WowzaGoCoderMP4PlayerSample.swift/MP4PlayerViewController.swift)
Find this section, then scroll through the code:
You have to capture from ReplayKit and send it to the GoCoder encoder:
`guard let imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer)`
`else`
`{continue}`
`// send the image buffer to the Wowza encoder self.encoder.videoFrameWasCaptured(imageBuffer, framePresentationTime: CMTime.invalid, frameDuration: CMTime.invalid)`
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### Author:  [@James\_Kember](https://community.wowza.com/u/James_Kember)
#### Post date: [April 3, 2020, 1:45pm UTC](https://community.wowza.com/t/i-want-to-broadcast-my-app-screen-using-apples-replay-kit-2-system-broadcast-is-it-supported-by-wowza-ios-sdk-i-didnt-find-any-documentation-on-how-to-access-wowza-sdk-in-broadcast-extension-and-upload-video-buffers/53196/7 "2020-04-03T13:45:59Z")
This is great thank you - do you have an example of what you would need to do for audio input also?