# mediamtx v1.17.0

- Product: mediamtx (https://whatsnew.fyi/product/mediamtx)
- Vendor: bluenviron
- Date: 2026-03-17
- Version: v1.17.0
- Original notes: https://github.com/bluenviron/mediamtx/releases/tag/v1.17.0
- Permalink: https://whatsnew.fyi/product/mediamtx/releases/v1.17.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Support publishing multiple video/audio renditions in WebRTC
- **added** — Provide track details in API
- **added** — Add user field to RTSP, RTMP, SRT, WebRTC connections and sessions
- **added** — Add RTSP reported lost packets tracking with outboundRtpPacketsReportedLost property
- **added** — Add new stats for RTSPSession.outboundRTPPacketsDiscarded, Path.inboundFramesInError, SRTConn.outboundFramesDiscarded, WebRTCSession.outboundFramesDiscarded, RTMPConn.outboundFramesDiscarded, and HLSMuxer.outboundFramesDiscarded
- **changed** — Rename WebRTC stats to match RTSP ones
- **changed** — Add inbound or outbound prefix to stats for improved readability
- **changed** — Optionally validate JWT iss and aud claims
- **fixed** — Avoid buffering HTTP response body in loggerWriter by replacing buffer with plain int counter
- **fixed** — Fix rtsps scheme not being used in requests
- **fixed** — Support unwrapping MPEG-TS tracks for use with other protocols and recording system
- **fixed** — Fix client support for hostnames in source and dest headers
- **fixed** — Allocate an RTP sender for each server session
- **fixed** — Store reported lost RTP packets in stats
- **fixed** — Support muxing KLS with MPEG-TS in HLS muxer
- **fixed** — Fix deadlock when processing fMP4s in HLS client
- **fixed** — Fix panic with WHIP POST authentication failures
- **changed** — Add deprecated fields to OpenAPI definition
- **changed** — Add missing enums and move all enums in dedicated components in OpenAPI
- **changed** — Add two missing SRT stats to metrics

##### New major features

WebRTC

* support publishing multiple video/audio renditions (https://github.com/bluenviron/mediamtx/issues/5573) this allows to receive multiple video tracks from OBS Studio with the new WebRTC Simulcast feature introduced in v32.1.0.

API

* provide track details (https://github.com/bluenviron/mediamtx/issues/5307) (https://github.com/bluenviron/mediamtx/issues/5333) (https://github.com/bluenviron/mediamtx/issues/1726) (https://github.com/bluenviron/mediamtx/issues/5585)
* add user field to RTSP, RTMP, SRT, WebRTC conns and sessions (https://github.com/bluenviron/mediamtx/issues/5104) (https://github.com/bluenviron/mediamtx/issues/5565)
* add RTSP reported lost packets (https://github.com/bluenviron/mediamtx/issues/5198) (https://github.com/bluenviron/mediamtx/issues/5579) The new outboundRtpPacketsReportedLost property allows to track RTP packets that have been reported lost by readers. Furthermore, stats now have a "inbound" or "outbound" prefix to improve readability.
* rename WebRTC stats to match RTSP ones (https://github.com/bluenviron/mediamtx/issues/5581)
* add new stats (https://github.com/bluenviron/mediamtx/issues/5582) - RTSPSession.outboundRTPPacketsDiscarded - Path.inboundFramesInError - SRTConn.outboundFramesDiscarded - WebRTCSession.outboundFramesDiscarded - RTMPConn.outboundFramesDiscarded - HLSMuxer.outboundFramesDiscarded

##### Fixes and improvements

General

* avoid buffering HTTP response body in loggerWriter (https://github.com/bluenviron/mediamtx/issues/5552) loggerWriter was shadow-copying every response byte into a bytes.Buffer to report the body size, causing the entire response to be accumulated in memory for the lifetime of each request. Replace the buffer with a plain int counter since dump() only ever reported the byte count anyway.
* optionally validate JWT iss and aud claims (https://github.com/bluenviron/mediamtx/issues/5569)
* metrics: add two missing SRT stats (https://github.com/bluenviron/mediamtx/issues/5580)

API

* add deprecated fields to the OpenAPI definition (https://github.com/bluenviron/mediamtx/issues/5575)
* add missing enums and move all enums in dedicated components (https://github.com/bluenviron/mediamtx/issues/5576)

RTSP

* fix rtsps scheme not being used in requests (https://github.com/bluenviron/mediamtx/issues/5236) (https://github.com/bluenviron/mediamtx/issues/5544)
* support unwrapping MPEG-TS tracks (https://github.com/bluenviron/mediamtx/issues/5476) this allows to use MPEG-TS tracks with other protocols and with the recording system
* client: fix support for hostnames in source and dest headers (https://github.com/bluenviron/gortsplib/issues/1009) (https://github.com/bluenviron/mediamtx/issues/5304) (https://github.com/bluenviron/gortsplib/issues/1014)
* allocate a rtp sender for each server session (https://github.com/bluenviron/gortsplib/issues/1021) this produces more realistic statistics and in the future will allow to implement per-session statistics and packet retransmission.
* store reported lost RTP packets in stats (https://github.com/bluenviron/mediamtx/issues/5198) (https://github.com/bluenviron/gortsplib/issues/1023)

HLS

* muxer: support muxing KLS with MPEG-TS (https://github.com/bluenviron/gohlslib/issues/327)
* client: fix deadlock when processing fMP4s (https://github.com/bluenviron/gohlslib/issues/333) (https://github.com/bluenviron/gohlslib/issues/334)

WebRTC

* fix panic with WHIP POST authentication failures (https://github.com/bluenviron/mediamtx/issues/5566)

Dependencies

* code.cloudfoundry.org/bytefmt updated from v0.64.0 to v0.67.0
* github.com/abema/go-mp4 updated from v1.4.1 to v1.5.0
* github.com/bluenviron/gohlslib/v2 updated from v2.2.8 to v2.2.9
* github.com/bluenviron/gortsplib/v5 updated from v5.4.0 to v5.5.0
* github.com/bluenviron/mediacommon/v2 updated from v2.8.2 to v2.8.3
* golang.org/x/crypto updated from v0.48.0 to v0.49.0
* golang.org/x/sys

_[Truncated at 4000 characters — full notes: https://github.com/bluenviron/mediamtx/releases/tag/v1.17.0]_