Choose the package you actually run
Use Celluloid’s project installation page or the supported distribution package route. Record the installed Celluloid and underlying package versions. A distribution package and a sandboxed application can differ in integration and update timing even while displaying the same player name.
Open one permitted local video before adding network access or custom configuration. Confirm ordinary playback, pause and volume. This gives a simple baseline independent of a private server, playlist token or browser sign-in, and avoids changing several source and desktop variables at the same time.
Keep frontend and engine settings distinct
The project documents support for mpv configuration files and input configuration. Make a backup before adding settings copied from another installation. Understand whether a change affects the graphical interface, the playback engine or key bindings. A command-line example is not automatically a menu item.
For a hypothetical shortcut conflict, note which key you pressed, which action you wanted and what occurred. Test a small change against that specific action. Avoid importing a large unreviewed configuration merely to fix one shortcut, because it can introduce unrelated filters, scripts or output choices.
Use desktop integration within its scope
Celluloid describes playlist drag-and-drop, MPRIS integration and Wayland support. Those features concern desktop operation; they do not guarantee television-remote usability or entitlement to a network source. Choose it for a desktop task rather than assuming every media player is a complete IPTV portal client.
When reporting a problem, include desktop session, package source, file or authorised source type and whether custom mpv settings are loaded. Redact private URLs. Preserve the distinction between an interface action failing and a particular encoded item not playing; each needs a different reproducible example.