# H264/AAC Streaming Sound Problem

**URL:** <https://community.wowza.com/t/h264-aac-streaming-sound-problem/42636>\
**Category:** Hire a Consultant\
**Created:** [June 30, 2014, 12:13pm UTC](https://community.wowza.com/t/h264-aac-streaming-sound-problem/42636 "2014-06-30T12:13:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![sunil\_olickal](https://avatars.discourse-cdn.com/v4/letter/s/97f17d/32.png) [@sunil\_olickal](https://community.wowza.com/u/sunil_olickal)\
**Post date:** [June 30, 2014, 12:13pm UTC](https://community.wowza.com/t/h264-aac-streaming-sound-problem/42636/1 "2014-06-30T12:13:00Z")

</div>

I am pretty new to wowza. I’ve chineese Ip camera which has got H264 and AAC audio output format. I would like to stream the video+audio live from Amazon EC2 Server. We use Wowza Streaming Engine 4: Standard ($15 monthly subscription). By following the tutorial named “[https://www.wowza.com/docs/how-to-re-stream-video-from-an-ip-camera-rtsp-rtp-re-streaming](https://www.wowza.com/docs/how-to-re-stream-video-from-an-ip-camera-rtsp-rtp-re-streaming)”.

The problem is that the video is fine but no audio (only can hear a tone sound). anybody can help me.

Thanks.

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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:** [June 30, 2014, 4:57am UTC](https://community.wowza.com/t/h264-aac-streaming-sound-problem/42636/2 "2014-06-30T04:57:03Z")

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Hi there,

Do you see a message like this in the logs:

```auto
RTPSessionDescriptionDataProviderBasicRTSPWorker.b uildSDPData: SDP data missing rtpmap entry for [audio] track. Try adding MediaCaster/Property rtspDefaultAudioRTPMap with track media information.

```

If so try adding the following property to the MediaCaster/Properties container in [install-dir]/conf/[application]/Application.xml with the proper media definition information. For example: for a G.711 mu-law audio track, the entry might look like this:

```auto
<Property> 
      <Name>rtspDefaultAudioRTPMap</Name> 
      <Value>PCMU/8000</Value>
</Property>

```

Note: you can start Wowza in stand-alone mode ([install-dir]/bin/startup.bat (startup.sh on Mac) to see the log output to the console.

I hope this helps, please let us know if you need further assistance in the future.

Salvadore

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<div class="post-metadata">

**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:** [June 30, 2014, 5:00am UTC](https://community.wowza.com/t/h264-aac-streaming-sound-problem/42636/3 "2014-06-30T05:00:00Z")

</div>

I just realized you posted this to the find a consultant forum.

Are you looking to hire someone to assist you? If not please refrain from posting to the find a consultant forum and instead use one of other Wowza forums. General forum for example.

If you are looking to hire someone, please include a detailed description of what the job will entail.

Thanks again and sorry for any inconvenience to all.

Salvadore