[Camera Support]: Minor - "method DESCRIBE failed: 404 Not Found" several times on startup

[leccelecce]

Checklist

• I have updated to the latest available Frigate version.
• I have cleared the cache of my browser.
• I have tried a different browser to see if it is related to my browser.
• I have tried reproducing the issue in incognito mode to rule out problems with any third party extensions or plugins I have installed.

Describe the problem you are having

I see this repeated 3x times reliably on startup. From memory it happened on 0.14 too.

I suspect it's unimportant as everything works fine, so maybe Frigate or go2rtc are still starting up processes/camera feeds, but given it is untagged and has no severity, it sticks out in the logs.

It's being logged by ffmpeg's rtsp code here:

https://github.com/FFmpeg/FFmpeg/blob/f3eb622fc455cbef7b2fc9efacd82666e16ffd76/libavformat/rtsp.c#L1439

I do have a few cameras where I use ffmpeg to downsize resolution/rotate the feed. I'm wondering if go2rtc tries to set those streams up, but hasn't yet finished connecting to the parent camera feed yet. If I comment out/disable all but one camera (but leave one of the ffmpeg feeds in), the issue seems to go away so it's not quite 100% reproducible.

If it's not an easily solvable issue, maybe the tag/severity can be added at least?

Steps to reproduce

1. Restart Frigate

Version

0.15.0-ac8ddad

In which browser(s) are you experiencing the issue with?

No response

Frigate config file

...
ffmpeg:
  path: '5.0' # temp to work around https://github.com/blakeblackshear/frigate/discussions/14483
  hwaccel_args: preset-intel-qsv-h264
...
...
go2rtc:
  log:
    level: debug
...
  streams:

    hikcam9:
      - rtsp://xxx:yyy@zzz.local.lan:554/Streaming/Channels/101
    hikcam9_resized:
      - ffmpeg:hikcam9#video=h264#width=1920#height=1080#raw=-fpsmax 5#hardware=vaapi

docker-compose file or Docker CLI command

n/a

Relevant Frigate log output

2024-11-02 18:09:30.151365766  [INFO] Preparing Frigate...
2024-11-02 18:09:30.158629636  [INFO] Starting Frigate...
2024-11-02 18:09:34.276239506  [2024-11-02 18:09:34] frigate.util.config            INFO    : Checking if frigate config needs migration...
2024-11-02 18:09:34.462197150  [2024-11-02 18:09:34] frigate.util.config            INFO    : frigate config does not need migration...
2024-11-02 18:09:34.633701115  [rtsp @ 0x5bb5200] method DESCRIBE failed: 404 Not Found
2024-11-02 18:09:42.983172739  [rtsp @ 0x5b64440] method DESCRIBE failed: 404 Not Found
2024-11-02 18:09:42.985832690  [rtsp @ 0x5b697c0] method DESCRIBE failed: 404 Not Found
2024-11-02 18:09:43.008835342  [2024-11-02 18:09:43] frigate.app                    INFO    : Starting Frigate (0.15.0-ac8ddad)
2024-11-02 18:09:43.066200384  [2024-11-02 18:09:43] peewee_migrate.logs            INFO    : Starting migrations
2024-11-02 18:09:43.066773647  [2024-11-02 18:09:43] peewee_migrate.logs            INFO    : There is nothing to migrate
2024-11-02 18:09:43.095583448  [2024-11-02 18:09:43] frigate.app                    INFO    : Recording process started: 437
2024-11-02 18:09:43.095826147  [2024-11-02 18:09:43] frigate.app                    INFO    : Review process started: 441
2024-11-02 18:09:43.099714980  [2024-11-02 18:09:43] frigate.app                    INFO    : go2rtc process pid: 98
2024-11-02 18:09:43.128581476  [2024-11-02 18:09:43] detector.coral                 INFO    : Starting detection process: 454
2024-11-02 18:09:43.129086080  [2024-11-02 18:09:43] frigate.app                    INFO    : Embedding process started: 456
2024-11-02 18:09:43.150838900  [2024-11-02 18:09:43] frigate.app                    INFO    : Output process started: 479
2024-11-02 18:09:43.945820996  [2024-11-02 18:09:43] frigate.app                    INFO    : Camera processor started for front_porch: 537
...

Relevant go2rtc log output

2024-11-02 18:09:30.150564331  [INFO] Preparing new go2rtc config...
2024-11-02 18:09:30.848260243  [INFO] Not injecting WebRTC candidates into go2rtc config as it has been set manually
2024-11-02 18:09:30.886515099  [INFO] Starting go2rtc...
2024-11-02 18:09:31.052014469  18:09:31.051 INF go2rtc platform=linux/amd64 revision=b2399f3 version=1.9.2
2024-11-02 18:09:31.052019835  18:09:31.051 DBG build vcs.time=2024-05-17T12:57:11Z version=go1.22.2
2024-11-02 18:09:31.052025323  18:09:31.051 INF config path=/dev/shm/go2rtc.yaml
2024-11-02 18:09:31.052959272  18:09:31.052 INF [api] listen addr=:1984
2024-11-02 18:09:31.053374612  18:09:31.053 INF [rtsp] listen addr=:8554
2024-11-02 18:09:31.054065802  18:09:31.054 INF [webrtc] listen addr=:8555
2024-11-02 18:09:31.054420933  18:09:31.054 DBG [hass] can't import config: open /config/.storage/core.config_entries: no such file or directory
2024-11-02 18:09:34.639206354  18:09:34.639 DBG [rtsp] new consumer stream=hikcam8_resized
2024-11-02 18:09:34.639332123  18:09:34.639 DBG [exec] run cmd="/usr/lib/ffmpeg/5.0/bin/ffmpeg -hide_banner -v error -hwaccel vaapi -hwaccel_output_format vaapi -hwaccel_flags allow_profile_mismatch -fflags nobuffer -flags low_delay -timeout 5000000 -user_agent go2rtc/ffmpeg -rtsp_flags prefer_tcp -i rtsp://127.0.0.1:8554/hikcam8?video -fpsmax 5 -c:v h264_vaapi -g 50 -bf 0 -profile:v high -level:v 4.1 -sei:v 0 -an -vf format=vaapi|nv12,hwupload,scale_vaapi=1920:1080:out_color_matrix=bt709:out_range=tv:format=nv12 -user_agent ffmpeg/go2rtc -rtsp_transport tcp -f rtsp rtsp://127.0.0.1:8554/ba64e20c6214ba7196530da1ab39fa54" url="exec:/usr/lib/ffmpeg/5.0/bin/ffmpeg -hide_banner -v error -hwaccel vaapi -hwaccel_output_format vaapi -hwaccel_flags allow_profile_mismatch -fflags nobuffer -flags low_delay -timeout 5000000 -user_agent go2rtc/ffmpeg -rtsp_flags prefer_tcp -i rtsp://127.0.0.1:8554/hikcam8?video -fpsmax 5 -c:v h264_vaapi -g 50 -bf 0 -profile:v high -level:v 4.1 -sei:v 0 -an -vf \"format=vaapi|nv12,hwupload,scale_vaapi=1920:1080:out_color_matrix=bt709:out_range=tv:format=nv12\" -user_agent ffmpeg/go2rtc -rtsp_transport tcp -f rtsp rtsp://127.0.0.1:8554/ba64e20c6214ba7196530da1ab39fa54"
2024-11-02 18:09:34.645165653  18:09:34.645 DBG [rtsp] new consumer stream=hikcam8
2024-11-02 18:09:34.653454671  18:09:34.653 DBG [streams] start producer ...

Operating system

Debian

Install method

Docker Compose

Network connection

Wired

Camera make and model

Various Hikvision and others

Screenshots of the Frigate UI's System metrics pages

n/a

Any other information that may be helpful

n/a

[hawkeye217]

Your assessment is likely correct, go2rtc just hasn't started your stream yet.