Josh Hawkins d37dff1b49
Docs update (#24131)
* 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
2026-08-29 07:01:11 -06:00
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