Media diagnostics · Primary-source explanation; no UK IPTV implementation or account test. Instructions are based on publisher guidance; a UK IPTV account was not tested on this platform.
Read a technical report without inventing a recording history
Suppose a player reports decoded Opus audio at 48 kHz while an authorised source description says the original material entered the encoder at 44.1 kHz. Those statements are not automatically inconsistent. The decoder output is the representation being produced for playback. It is not a certificate of the recording equipment or the sample rate used at every earlier production stage. Keep the stage of each observation visible before alleging that one label must be false.
Understand the Ogg header distinction
RFC 7845 distinguishes its input sample rate metadata from the rate used for playback and gives zero the meaning unspecified. The reference decoder supports several output rates, and the specification describes selecting an appropriate playback rate. The original input rate is not preserved as recoverable samples through lossy compression. A plausible metadata value can provide context, but it should not be promoted into independent proof of the source master or an assurance that no earlier resampling happened.
Choose the question before changing the file
If the requirement is compatibility with an output device, investigate the actual decoder and device rates. If the requirement is archival provenance, obtain production information from the publisher. Exporting decoded audio at another rate can satisfy a workflow without reconstructing information discarded earlier. Avoid converting a file repeatedly simply to make two stage-specific labels agree. This example explains how both labels can coexist; it does not identify a specific UK IPTV source, establish its master quality, or report a measured difference in sound.