# RTMP to RTSP without transcode?
**URL:** https://community.wowza.com/t/rtmp-to-rtsp-without-transcode/34340
**Category:** Wowza Streaming Engine
**Created:** [February 17, 2010, 4:11pm UTC](https://community.wowza.com/t/rtmp-to-rtsp-without-transcode/34340 "2010-02-17T16:11:28Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Todd\_Henner](https://community.wowza.com/u/Todd_Henner)
#### Post date: [February 17, 2010, 4:11pm UTC](https://community.wowza.com/t/rtmp-to-rtsp-without-transcode/34340/1 "2010-02-17T16:11:28Z")
Hi,
Is it possible to publish a live stream with RTMP and play this same stream with RTSP without going through any transcoding (just rtmp-\>rtp conversion). Since ffmpeg natively supports the flash codecs most ffmpeg/libavcodecs could decode this stream theoretically and we could avoid the transcoding process.
Thanks!
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### Author:  [@Richard\_Lanham](https://community.wowza.com/u/Richard_Lanham)
#### Post date: [February 17, 2010, 9:30pm UTC](https://community.wowza.com/t/rtmp-to-rtsp-without-transcode/34340/2 "2010-02-17T21:30:02Z")
Yes, take a look at this Tutorial:
[https://www.wowza.com/docs/how-to-set-up-live-streaming-using-an-rtmp-based-encoder](https://www.wowza.com/docs/how-to-set-up-live-streaming-using-an-rtmp-based-encoder)
Richard
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### Author:  [@Richard\_Lanham](https://community.wowza.com/u/Richard_Lanham)
#### Post date: [February 17, 2010, 11:00pm UTC](https://community.wowza.com/t/rtmp-to-rtsp-without-transcode/34340/3 "2010-02-17T23:00:36Z")
No, Wowza doesn’t do any transcoding. You might need h.264 formatted content for what you are trying to do.
Richard
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### Author:  [@Todd\_Henner](https://community.wowza.com/u/Todd_Henner)
#### Post date: [February 17, 2010, 5:13pm UTC](https://community.wowza.com/t/rtmp-to-rtsp-without-transcode/34340/4 "2010-02-17T17:13:36Z")
I’ve been (somewhat) successful in streaming live RTMP -\> RTSP, i see messages in wowza “encodeH263.framesize …” which makes me think it’s transcoding from the flash codec to H.263.
Does wowza actually transcode or is it just converting the packet format from flash to standard H.263 and not doing any transcoding?
Regards,
Todd
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### Author:  [@Todd\_Henner](https://community.wowza.com/u/Todd_Henner)
#### Post date: [February 17, 2010, 7:40pm UTC](https://community.wowza.com/t/rtmp-to-rtsp-without-transcode/34340/5 "2010-02-17T19:40:25Z")
Thanks, that clears it up. I did switch the flash encoder side to h264 and sure enough rtmp-\>rtsp is working properly now. The fact there is no transcoding explains why the ‘default’ sorensen encoder doesn’t work very well for rtmp-\>rtsp since it’s only kinda h.263.
Thanks!!
Todd