Constant Buffering / Freezing in Home Assistant - Fine in go2rtc

[rofocalus]

• Check Integration errors in Hass logs (Configuration > Logs), maybe answer there

Logger: frontend.js.modern.202511050
Source: components/system_log/__init__.py:331
First occurred: 12:18:54 PM (17 occurrences)
Last logged: 12:19:11 PM

    Uncaught error from Firefox 144.0 on Linux Error: Failed to execute 'define' on 'CustomElementRegistry': the name "focus-trap" has already been used with this registry 68965/</A.prototype.define (node_modules/@webcomponents/scoped-custom-element-registry/src/scoped-custom-element-registry.ts:180:12) xe/a.define (/hacsfiles/tabbed-card/tabbed-card.js:63:109) /hacsfiles/advanced-camera-card/card-04eb008a.js:75:3686
    Uncaught error from Firefox 144.0 on Linux RangeError: source array is too long onmse/this.onmessage.mse/this.ondata (/webrtc/video-rtc.js:475:25) onopen/< (/webrtc/video-rtc.js:344:22)

Title. Stream goes grey every second and comes back randomly or sometimes not at all until page refresh. Using Firefox / Zen browser on Arch Linux. Get this fault in browser console:

Uncaught RangeError: source array is too long
    ondata https://homeassistant/webrtc/video-rtc.js?v=1.9.9:475
    onopen https://homeassistant/webrtc/video-rtc.js?v=1.9.9:344
23 [video-rtc.js:475:25](https://homeassistant/webrtc/video-rtc.js?v=1.9.9)
    ondata https://homeassistant/webrtc/video-rtc.js?v=1.9.9:475
    onopen https://homeassistant/webrtc/video-rtc.js?v=1.9.9:344

Happens across any browser (tried Firefox, Zen, Chrome, Brave). Happens with any device too (different computers running Linux, Pixel 8 with Home Assistant app). With any browser on any device, can access go2rtc and view stream side by side and it will go out on Home Assistant and be fine on the stream viewer on go2rtc. Not sure what else to check atp.

go2rtc comes from Frigate docker container, Home Assistant is also docker container on same device

Home Assistant cards are basic config, as follows:

type: custom:webrtc-camera
url: frontyard

[smshapiro85]

Not sure if this is related to the original issue but adding here just in case... recently started receiving these log messages that seem similar, but again, not totally sure.

Logger: frontend.js.modern.202511050
Source: components/system_log/__init__.py:331
First occurred: 10:01:10 AM (10 occurrences)
Last logged: 10:06:38 AM

Uncaught error from Firefox 144.0 on macOS 10.15 InvalidStateError: An attempt was made to use an object that is not, or is no longer, usable onmse/this.onmessage.mse/< (/webrtc/video-rtc.js:452:21)
Uncaught error from Safari 26.1 on macOS 10.15.7 InvalidStateError: The object is in an invalid state. /webrtc/video-rtc.js:452:39

Streams sometimes freeze and it does resolve with refreshing the page.

Here is my card config:

type: custom:webrtc-camera
url: rtspx://192.168.1.1:7441/ijAZsGJZ2FkEt9Oy
media: video
background: true
grid_options:
  columns: full

[rofocalus]

OK so since this, I've "resolved" this issue by realizing that i was serving the streams via MSE (probably the issue), and since this was using the go2rtc packaged with Frigate, I tried changing the network mode to host, which fixed the issue with the MSE and they became RTC streams, which I dn't see this issue anymore, but then found out that Frigate cannot work under host mode, so i ended up just separating Frigate and go2rtc into separate containers, go2rtc being under "host" network in docker and everything has been working like a dream lately. May still be an issue within the integration, but no longer effecting me

[thefunkygibbon]

I've been seeing this issue for ages too. just a constant buffering/spinning circle. like every couple of seconds. happened with my eufy cameras, reolinks, hikvision, now using frigate and still buffers the same when using its re-streamed videos.

is this the only way to stream cameras via a dashboard? seems odd that its a 3rd party integration.

[Speedygg]

I've been seeing this issue for ages too. just a constant buffering/spinning circle. like every couple of seconds. happened with my eufy cameras, reolinks, hikvision, now using frigate and still buffers the same when using its re-streamed videos.

is this the only way to stream cameras via a dashboard? seems odd that its a 3rd party integration.

Not sure if anyone was having a similar issue as this. I am running the docker container of go2rtc in unraid and kept getting the following error no matter what i did with ports.

ERR github.com/AlexxIT/go2rtc/internal/webrtc/webrtc.go:48 > error="listen udp 192.168.1.111:8555: bind: address already in use"

After looking and checking with Gemini, I was able to solve it by adding the following line to the config

webrtc:
  listen: ":8555/tcp"