Media diagnostics · Primary-source explanation; examples are illustrative. Instructions are based on publisher guidance; a UK IPTV account was not tested on this platform.
Keep the provider abstraction
Android document providers can expose local files, removable storage and cloud backed material through the same system picker. The official Storage Access Framework documentation explains that the provider controls physical storage and exposes document identities and capabilities. Therefore a file which looks ordinary in the picker does not necessarily correspond to a raw path that a player can open directly. A display name is a label, not a universal storage location.
Diagnose a local versus cloud comparison
For an original developer exercise, select one permitted local media file and one available through a supported cloud provider. Record the returned URI type and the documented open operation, rather than extracting a guessed path from the visible name. If one provider works and another fails, preserve that narrower result. The application may need to handle provider access and availability instead of asking the viewer to rename a file which was never the underlying problem.
Respect the granted access
Use the provider and content resolver operations appropriate to the selected document. Inspect supported capabilities before offering edit or delete controls, and avoid requesting access to an entire collection when one chosen document suffices. Retain only the access required by the task. This article concerns Android application file handling; it does not promise that every player accepts every provider URI, that a cloud item is already downloaded, or that a selection grants programme reproduction rights.