Separate the media file and its permission
A downloaded encrypted media file and the licence used to play it are different parts of a legitimate viewing arrangement. A file remaining in storage does not itself establish that the required permission remains usable. Begin with the application’s current message and the publisher’s own download or offline rules. Do not infer a universal expiry period from another service or from the size of the download.
Read persistence as a storage distinction
Microsoft’s PlayReady overview describes persistent licences as stored in non-volatile memory and non-persistent licences as lasting for the current session. It also states that both can contain rights restrictions defined by the issuing service. Persistent therefore describes survival beyond an in-memory session; it is not a synonym for permanent ownership, unrestricted copying or playback on every other device using the same account.
Use a practical hypothetical case
Suppose an authorised offline download is still visible after a trip, but the application now asks for a licence refresh or reports expiry. Preserve that exact message and check the relevant publisher’s documented rules. Deleting unrelated files, renaming the video or changing a device’s clock is not a sound way to determine entitlement. The useful question concerns this download, this account and this application’s permitted renewal or replay process.
Report the actual boundary
State whether the problem is finding the file, opening the app, acquiring permission or decoding the media after permission is available. Those stages are not interchangeable. Do not share keys, account secrets or private licence traffic publicly. This explanation describes a documented DRM concept; it does not establish UK IPTV’s DRM technology, offline rights or any owner-approved download feature, and it supplies no method to bypass licence restrictions.