Tweaks (#22965)

* use ffmpeg to probe rtsp urls instead of cv2

cv2 is faster (no subprocess launch) and will continue to be used for recording segments

* tweak faq

* change unsaved color to orange

avoids confusion with validation errors (red)

* don't use any variant of orange as a profile color

avoids confusion with unsaved changes

* more unsaved color tweaks

web/tailwind.config.cjs

@@ -65,6 +65,7 @@ module.exports = {
         ring: "hsl(var(--ring))",
         danger: "#ef4444",
         success: "#22c55e",
+        unsaved: "#f59e0b",
         background: "hsl(var(--background))",
         background_alt: "hsl(var(--background-alt))",
         foreground: "hsl(var(--foreground))",