# Gstreamer and Decklink video but no audio

**URL:** <https://community.wowza.com/t/gstreamer-and-decklink-video-but-no-audio/41665>\
**Category:** Wowza Streaming Engine\
**Created:** [December 2, 2013, 3:40pm UTC](https://community.wowza.com/t/gstreamer-and-decklink-video-but-no-audio/41665 "2013-12-02T15:40:27Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Kevin\_Lindgren](https://avatars.discourse-cdn.com/v4/letter/k/7c8e57/32.png) [@Kevin\_Lindgren](https://community.wowza.com/u/Kevin_Lindgren)\
**Post date:** [December 2, 2013, 3:40pm UTC](https://community.wowza.com/t/gstreamer-and-decklink-video-but-no-audio/41665/1 "2013-12-02T15:40:27Z")

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Hello,

I am currently trying to take the SDI source from a Black Magic Decklink card and send it to WOWZA for streaming, and eventually transcoding once I get the streaming working. I am using Gstreamer and Decklinksrc to capture the incoming audio and video. Im new to Gstreamer, but by walking through the docs, and some internet scouring I have gotten to the following cmd line…

gst-launch-0.10 decklinksrc mode=11 connection=0 audio-input=1 ! ffmpegcolorspace ! “video/x-raw-yuv, format=(fourcc)UYVY, width=(int)1920, height=(int)1080, framerate=(fraction)30000/1001” ! ffmpegcolorspace ! x264enc tune=zerolatency ! video/x-h264, profile=main, framerate=30000/1001 ! flvmux ! rtmpsink location=“rtmp://199.201.255.36/live/mp4:mystream”

Can anyone assist in getting the audio into the outbound RTMP stream, or point me to the correct demo/tutorial that I will help with this?

Thanks!

Kevin