# rmtp Stream : Unable to play rmtp stream on android or iphone
**URL:** https://community.wowza.com/t/rmtp-stream-unable-to-play-rmtp-stream-on-android-or-iphone/48828
**Category:** Wowza Streaming Engine
**Created:** [May 25, 2017, 12:01am UTC](https://community.wowza.com/t/rmtp-stream-unable-to-play-rmtp-stream-on-android-or-iphone/48828 "2017-05-25T00:01:09Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Leah\_Koulouvaris](https://community.wowza.com/u/Leah_Koulouvaris)
#### Post date: [May 25, 2017, 12:01am UTC](https://community.wowza.com/t/rmtp-stream-unable-to-play-rmtp-stream-on-android-or-iphone/48828/1 "2017-05-25T00:01:09Z")
Using 1avstreamer to rmtp encode a camera stream.
rtmp://34.203.34.245:1935/live works on desktop (testplayer)
Mobile streams suggested by Mobile tab. Do not work.
I get a blank screen with play button.
I do find these items in the logs:
**2017-05-24**
23:39:48 (UTC) **comment**
server (200) LiveStreamPacketizerPacketHandler.handlePacket[live/_definst_/myStream]:
Audio and video codecs cannot be packetized together
in a single stream: audio:MP3 video:VP6
**2017-05-24**
**23:39:47 (UTC)** **comment**
**server (200)** CupertinoPacketHandler.handleHolder[live/_definst_/myStream]:
Invalid video codec for iPhone/iPod: VP6
---
### Author:  [@Karel\_Boek](https://community.wowza.com/u/Karel_Boek)
#### Post date: [May 25, 2017, 4:01pm UTC](https://community.wowza.com/t/rmtp-stream-unable-to-play-rmtp-stream-on-android-or-iphone/48828/2 "2017-05-25T16:01:53Z")
The error message says it all: You can’t combine MP3 and VP6 in an HLS stream. Best is to change the encoder (1avstreamer) to use a combination that works, eg. AAC or MP3 and H264. See [https://www.wowza.com/products/streaming-engine/specifications](https://www.wowza.com/products/streaming-engine/specifications)