# RTSP Audio didn't stream (WowzaStreamEngine 4.7.3)

**URL:** <https://community.wowza.com/t/rtsp-audio-didnt-stream-wowzastreamengine-4-7-3/50973>\
**Category:** Wowza Streaming Engine\
**Created:** [March 19, 2018, 4:02pm UTC](https://community.wowza.com/t/rtsp-audio-didnt-stream-wowzastreamengine-4-7-3/50973 "2018-03-19T16:02:09Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Kim\_JinHyuk](https://avatars.discourse-cdn.com/v4/letter/k/a5b964/32.png) [@Kim\_JinHyuk](https://community.wowza.com/u/Kim_JinHyuk)\
**Post date:** [March 19, 2018, 4:02pm UTC](https://community.wowza.com/t/rtsp-audio-didnt-stream-wowzastreamengine-4-7-3/50973/1 "2018-03-19T16:02:09Z")

</div>

I want to re-stream to HLS by creating a stream file by receiving RTSP stream from the IP CAM being configured.

Video streams well but audio does not.

Attach the audio launch information of my IP CAM.

* * *

audio captionfilter: (alsasrc buffer-time=20000) audio/x-raw,format=S16LE,layout=interleaved,rate=44100,channels=1

encord : (avenc\_aac) audio/mpeg,base-profile=lc,channels=1,mpegversion=4,stream-format=raw

pay: rtpmp4apay max-ptime=20000000 name=pay1 pt=97

* * *

What is the problem?