# Can't find Vp8 and Opus support in preview release Wowza Streaming Engine 4.2

**URL:** <https://community.wowza.com/t/cant-find-vp8-and-opus-support-in-preview-release-wowza-streaming-engine-4-2/45396>\
**Category:** Wowza Streaming Engine\
**Created:** [August 11, 2015, 1:04pm UTC](https://community.wowza.com/t/cant-find-vp8-and-opus-support-in-preview-release-wowza-streaming-engine-4-2/45396 "2015-08-11T13:04:53Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![altanai\_bisht](https://avatars.discourse-cdn.com/v4/letter/a/f1d935/32.png) [@altanai\_bisht](https://community.wowza.com/u/altanai_bisht)\
**Post date:** [August 11, 2015, 1:04pm UTC](https://community.wowza.com/t/cant-find-vp8-and-opus-support-in-preview-release-wowza-streaming-engine-4-2/45396/1 "2015-08-11T13:04:53Z")

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Hello wowza Suport team ,

I was happy to hear that Wowza Streaming Engine 4.2 now supports transcoder-webm for vp8 and opus in preview version.

I could was able to stream H264 video and mp3 audio from Adobe Flash Live Encoder with key frame 4 and fps 4 ( screenshot below ) .

I viewed the stream on dash format on Shaka player I could also see a blob url in video src container in Html5 ( **with video but Without Audio** ) . I am not able to find and reuse the stream for webrtc purposes. As I see the console terminal I find the following traces ( in figure ) along with access log traces

could you specify how can if I am missing out anything to generate a webrtc supported media stream that can be shared across peers in webrtc peerconnection .

Also is there any way to input a webrtc stream vp8 stream into wowza and get in trans-coded into HLS and RTMP ( also asked [here](https://www.wowza.com/docs/how-to-transcode-live-streams-to-webm-for-mpeg-dash-playback) ) ?