# No sound on mobile

**URL:** <https://community.wowza.com/t/no-sound-on-mobile/41122>\
**Category:** Wowza Streaming Engine\
**Tags:** media-players-and-devices\
**Created:** [February 4, 2015, 8:19am UTC](https://community.wowza.com/t/no-sound-on-mobile/41122 "2015-02-04T08:19:00Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Reynaldo\_Columna](https://avatars.discourse-cdn.com/v4/letter/r/a587f6/32.png) [@Reynaldo\_Columna](https://community.wowza.com/u/Reynaldo_Columna)\
**Post date:** [February 4, 2015, 8:19am UTC](https://community.wowza.com/t/no-sound-on-mobile/41122/1 "2015-02-04T08:19:00Z")

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Hi guys,

We allow users to stream from both Flash and any encoder like OBS. When streaming from an encoder, sound on mobile come through without an issue. When a user stream from Flash, there is no sound on mobile. This is our site : [http://streamup.com](http://streamup.com). We are struggling a bit to get the quality working great as well. Any help would be greatly appreciated. Thanks guys!

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**Author:** ![sal\_jefferson](https://avatars.discourse-cdn.com/v4/letter/s/6de8d8/32.png) [@sal\_jefferson](https://community.wowza.com/u/sal_jefferson)\
**Post date:** [February 4, 2015, 7:33am UTC](https://community.wowza.com/t/no-sound-on-mobile/41122/2 "2015-02-04T07:33:37Z")

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Hello there.

Flash uses Speex or Nellymoser audio which is only supported over RTMP to a Flash player.

The Wowza Transcoder can take Speex audio and transcode to AAC:

[How to convert Flash Player 11 output from H.264 + Speex audio to H.264 + AAC audio using Wowza Transcoder AddOn](https://www.wowza.com/docs/how-to-convert-flash-player-11-output-from-h-264-speex-audio-to-h-264-aac-audio-using-wowza-transcoder)

[How to set up a Flash application to publish H.264 video and Speex audio to Wowza Transcoder AddOn](https://www.wowza.com/docs/how-to-set-up-a-flash-application-to-publish-h-264-video-and-speex-audio-to-wowza-transcoder)

Your users will need to use Speex audio and Wowza will need to Transcode that to AAC.

_Note: MP3 audio is not supported on Android devices_

I hope this is helpful.

Kind regards,

Salvadore

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**Author:** ![Jason\_Hilton](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/jason_hilton/32/437_2.png) [@Jason\_Hilton](https://community.wowza.com/u/Jason_Hilton)\
**Post date:** [May 29, 2015, 2:34pm UTC](https://community.wowza.com/t/no-sound-on-mobile/41122/3 "2015-05-29T14:34:20Z")

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Hi,

The stream would still need to be transcoded and a third party transcoder may not be as reliable as the Wowza transcoder. Adding a third party transcoder will also add another level of complexity to the workflow which may then require further investigation and a greater downtime to find a cause to any issues that may occur when streaming.

If the transcoding cost is a factor, please email our Sales team ([sales@wowza.com](mailto:sales@wowza.com)) abut the Pro license offerings which allow an unlimited number of transcodes.

Obviously you will be restricted by the capability of the server hardware as transcoding is a CPU intensive process.

Regards,

Jason

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**Author:** ![Reynaldo\_Columna](https://avatars.discourse-cdn.com/v4/letter/r/a587f6/32.png) [@Reynaldo\_Columna](https://community.wowza.com/u/Reynaldo_Columna)\
**Post date:** [May 24, 2015, 1:45pm UTC](https://community.wowza.com/t/no-sound-on-mobile/41122/4 "2015-05-24T13:45:56Z")

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Hi Salvadore!

Is there any way that this could be done without using the wowza transcoder?