[out#0/rtsp @ 0x86dd1c0] Could not write header (incorrect codec parameters ?): Server returned 400 Bad Request] when publishing a local video via ffmpeg to MediaMTX with JWT configured

[hothethien]

Which version are you using?

bluenviron/mediamtx:latest-ffmpeg

Which operating system are you using?

Linux amd64 Docker

Describe how to replicate the issue

1. Start the MediaMTX container on Ubuntu 22.04
2. Setup authentication via JWT
   authMethod: jwt
authJWTJWKS: https://xxx/realms/mediamtx/protocol/openid-connect/certs
authJWTClaimKey: mediamtx_permissions
3. Use ffmpeg to publish a local .mp4 file to MediaMTX server with JWT
   ffmpeg -re -stream_loop -1 -i output.mp4 -c copy -f rtsp rtsp://10.8.0.88:8554/phucdesktop?jwt=MY_JWT
4. It returned 400 bad request
   [out#0/rtsp @ 0x86dd1c0] Could not write header (incorrect codec parameters ?): Server returned 400 Bad Request

Server logs

2025/02/06 14:28:09 DEB [RTSP] [conn 10.8.0.88:49988] [c->s] ANNOUNCE rtsp://10.8.0.88:8554/phucdesktop?jwt=xxx RTSP/1.0
CSeq: 2
Content-Length: 489
Content-Type: application/sdp
User-Agent: Lavf61.1.100

v=0
o=- 0 0 IN IP4 127.0.0.1
s=No Name
c=IN IP4 10.8.0.88
t=0 0
a=tool:libavformat 61.1.100
m=video 0 RTP/AVP 96
b=AS:959
a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1; sprop-parameter-sets=Z01AH9oBQBbsBEAAAAMAQAAADIPGDKg=,aO88gA==; profile-level-id=4D401F
a=control:streamid=0
m=audio 0 RTP/AVP 97
b=AS:383
a=rtpmap:97 MPEG4-GENERIC/48000/6
a=fmtp:97 profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength=3; config=11B0
a=control:streamid=1

2025/02/06 14:28:09 INF [RTSP] [session 9a45d3f8] created by 10.8.0.88:49988
2025/02/06 14:28:09 DEB [RTSP] [conn 10.8.0.88:49988] [s->c] RTSP/1.0 400 Bad Request
CSeq: 2
Server: gortsplib

2025/02/06 14:28:09 INF [RTSP] [conn 10.8.0.88:49988] closed: path 'phucdesktop' is not configured
2025/02/06 14:28:09 INF [RTSP] [session 9a45d3f8] destroyed: not in use

BUT

I had run with the same configuration file, and on Docker Desktop Windows, it runs perfectly. I found that, JWT token was trimmed when run on Linux, but not on Windows

[aler9]

this has nothing to do with the server, you are using FFmpeg bundled into 22.04 which is quite old and truncates RTSP URLs. Update FFmpeg.