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Docs update (#24131)

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* fix incorrect backchannel docs

`#backchannel=0` is a native rtsp source param, not an ffmpeg one, and the troubleshooting warning had it listed as ffmpeg-only. Any `#` modifier on a bare `rtsp://` source turns the backchannel off unless the URL explicitly contains `#backchannel=1`, so a dedicated two-way talk stream can't carry `#video=h264` or anything else.

* add rotation faq
This commit is contained in:
Josh Hawkins
2026-08-29 07:01:11 -06:00
committed by GitHub
parent a745070b76
commit d37dff1b49
3 changed files with 21 additions and 3 deletions
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docs/docs/configuration/restream.md
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@@ -197,7 +197,7 @@ For cameras that support two-way talk, go2rtc will automatically establish an au
To prevent this, you must configure two separate stream instances:
1. One stream instance with `#backchannel=0` for Frigate's viewing, recording, and detection (prevents go2rtc from establishing the blocking backchannel)
2. A second stream instance without `#backchannel=0` for two-way talk functionality (can be used by Frigate's WebRTC viewer or other applications)
2. A second stream instance with no `#` parameters at all for two-way talk functionality (can be used by Frigate's WebRTC viewer or other applications)
Configuration example:
@@ -215,6 +215,8 @@ In this configuration:
- `front_door` stream is used by Frigate for viewing, recording, and detection. The `#backchannel=0` parameter prevents go2rtc from establishing the audio output backchannel, so it won't block two-way talk access.
- `front_door_twoway` stream is used for two-way talk functionality. This stream can be used by Frigate's WebRTC viewer when two-way talk is enabled, or by other applications (like Home Assistant Advanced Camera Card) that need access to the camera's audio output channel.
Any `#` parameter on a bare `rtsp://` source disables the backchannel unless the URL explicitly contains `#backchannel=1`. A two-way talk stream with something like `#video=h264` on it silently loses two-way audio, and Frigate will report that two-way talk is unavailable for that stream.
## Security: Restricted Stream Sources
For security reasons, the `echo:`, `expr:`, and `exec:` stream sources are disabled by default in go2rtc. These sources allow arbitrary command execution and can pose security risks if misconfigured.