a customer of mine uses a windows 7 PC with an unknwon Framegrabber Card. There the video and audio is connected. Currently they use windows media encode 9 with a german streaming provider who had closed service.
Windows Media Encoder will not work with Wowza Streaming Engine. Please use an encoder that uses H.264 video with stereo AAC audio and can deliver the content to Wowza Streaming Engine via RTMP, RTSP, or MPEG-TS.
If you are using a generic RTMP encoder then please follow the instructions in the following article.