# Recorded livestream mp4 files does not include audio

**URL:** https://community.wowza.com/t/recorded-livestream-mp4-files-does-not-include-audio/46862
**Category:** Wowza Streaming Engine
**Created:** [April 6, 2016, 10:59am UTC](https://community.wowza.com/t/recorded-livestream-mp4-files-does-not-include-audio/46862 "2016-04-06T10:59:04Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Bastian\_Spirek](https://avatars.discourse-cdn.com/v4/letter/b/e19b73/32.png) [@Bastian\_Spirek](https://community.wowza.com/u/Bastian_Spirek)
#### Post date: [April 6, 2016, 10:59am UTC](https://community.wowza.com/t/recorded-livestream-mp4-files-does-not-include-audio/46862/1 "2016-04-06T10:59:04Z")

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Hey,

I just setup the recording of a livestream in the Wowza Streaming Engine Manager.

If I record the Stream as flv file there is audio in it, but if I choose the mp4 format the audio is just not included.

I tried it several times, there is just no audio in the mp4 files.

What can I try to fix that? Thanks for your help.

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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: [April 6, 2016, 5:26pm UTC](https://community.wowza.com/t/recorded-livestream-mp4-files-does-not-include-audio/46862/2 "2016-04-06T17:26:34Z")

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Hello there.

It sounds like you are using an unsupported audio codec like Speex or NellyMoser?

The mp4 container supports mp3 or AAC audio codecs.

Regards,

Salvadore