# Does the Wowza Media Server support 'a=3GPP-Adaptation-Support' ?

**URL:** <https://community.wowza.com/t/does-the-wowza-media-server-support-a-3gpp-adaptation-support/42922>\
**Category:** Wowza Streaming Engine\
**Created:** [May 13, 2014, 10:02pm UTC](https://community.wowza.com/t/does-the-wowza-media-server-support-a-3gpp-adaptation-support/42922 "2014-05-13T22:02:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ji\_Hoon\_Lee](https://avatars.discourse-cdn.com/v4/letter/j/439d5e/32.png) [@Ji\_Hoon\_Lee](https://community.wowza.com/u/Ji_Hoon_Lee)\
**Post date:** [May 13, 2014, 10:02pm UTC](https://community.wowza.com/t/does-the-wowza-media-server-support-a-3gpp-adaptation-support/42922/1 "2014-05-13T22:02:49Z")

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Dear Sir,

I’m concerned with the RTSP/RTP streaming of the Wowza Media Server(WMS in short).

As far as I know, 3GPP-Adaptation-Support means bitrate adaptation capability.

Does the WMS support bitrate adaptation mechanism of RTSP/RTP streaming?

I have never seen a=3GPP-Adaptation-support field in SDP strings from WMS.

I think it should give that field in them if it would support birate adaptation mechanism of RTSP/RTP streaming.

Thanks in advance,

Phillip Lee.

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**Author:** ![Richard\_Lanham](https://avatars.discourse-cdn.com/v4/letter/r/c68b51/32.png) [@Richard\_Lanham](https://community.wowza.com/u/Richard_Lanham)\
**Post date:** [May 13, 2014, 1:33pm UTC](https://community.wowza.com/t/does-the-wowza-media-server-support-a-3gpp-adaptation-support/42922/2 "2014-05-13T13:33:43Z")

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Hi Phillip,

There is not support for ABR in RTSP playback using Wowza. You can ingest a stream over RTSP then transcode to multiple renditions using the [Wowza Transcoder](https://www.wowza.com/docs/how-to-set-up-and-run-wowza-transcoder-for-live-streaming).

Richard