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/src/pages/Settings.tsx

@@ -1435,7 +1435,7 @@ export default function Settings() {
                 />
               )}
               {showUnsavedDot && (
-                <span className="inline-block size-2 rounded-full bg-danger" />
+                <span className="inline-block size-2 rounded-full bg-unsaved" />
               )}
             </div>
           )}
@@ -1516,7 +1516,7 @@ export default function Settings() {
               <div className="sticky bottom-0 z-50 mt-2 bg-background p-4">
                 <div className="flex flex-col items-center gap-2">
                   <div className="flex items-center gap-2">
-                    <span className="text-sm text-danger">
+                    <span className="text-sm text-unsaved">
                       {t("unsavedChanges", {
                         ns: "views/settings",
                         defaultValue: "You have unsaved changes",