# Audio Bitrate

**URL:** <https://community.wowza.com/t/audio-bitrate/39843>\
**Category:** Wowza Streaming Engine\
**Created:** [January 22, 2013, 2:11am UTC](https://community.wowza.com/t/audio-bitrate/39843 "2013-01-22T02:11:59Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tolga\_burcak](https://avatars.discourse-cdn.com/v4/letter/t/5f8ce5/32.png) [@tolga\_burcak](https://community.wowza.com/u/tolga_burcak)\
**Post date:** [January 22, 2013, 2:11am UTC](https://community.wowza.com/t/audio-bitrate/39843/1 "2013-01-22T02:11:59Z")

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I’m recording video with webcam and it creates one flv file and one transcoded .mp4. When I record a video from webcam, I want to change audio rate. I want to make it 48Khz but audio codec is AAC Mono 16Khz in both files.

My AS3 code:

microphone.rate = 44;

microphone.codec = SoundCodec.SPEEX;

microphone.setSilenceLevel(0);

microphone.setUseEchoSuppression(true);

My transcode.xml:

AAC

48000

Can you suggest a solution for it please? Maybe I don’t need 48000Khz audio but I want to know if changing audio rate is possible or not.

Thanks a lot

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**Author:** ![Richard\_Lanham](https://avatars.discourse-cdn.com/v4/letter/r/c68b51/32.png) [@Richard\_Lanham](https://community.wowza.com/u/Richard_Lanham)\
**Post date:** [January 22, 2013, 1:55pm UTC](https://community.wowza.com/t/audio-bitrate/39843/2 "2013-01-22T13:55:48Z")

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I don’t see a way to change the sample rate (Hz) in the default template or extended parameters. And I don’t think you can increase sample rate from 16 to 48 in any case.

You should probably reset /Bitrate to “${SourceAudioBitrate}”

Rihca