Distinguish the internal key from the visible label
The XMLTV DTD gives each channel an identifier and permits human-readable display names. Programme entries refer to the channel identity. This means two labels that look familiar to a viewer do not necessarily establish the same mapping. A regional edition or another feed can need a distinct identity even when the shared broadcaster brand is much more prominent on screen.
Check a known programme and edition
When the guide appears attached to the wrong channel, choose one recognisable scheduled programme and compare the broadcaster’s current listing for the intended edition. Record the channel label and the guide result together. Do not begin with an EPG time offset if the titles themselves belong to another station. Correct clock arithmetic cannot turn one channel’s schedule into another channel’s actual programme list.
Keep mapping changes controlled
If the legitimate player or guide tool offers an explicit mapping function, follow its documented workflow for the relevant identity. Record the starting association before changing it. A name-only match can be ambiguous where several feeds share a broadcaster name. Avoid editing private playlist and EPG addresses at the same time, because that removes a clear comparison of which data or mapping change produced the result.
Preserve useful evidence privately
A support enquiry can describe the visible channel, expected edition, actual programme title and observation time without publishing complete account URLs. If technical support needs the relevant identifier, share only the appropriate value through the intended route. A correct mapping improves guide interpretation; it does not establish content rights, playback availability or a service’s current channel inventory from the mere presence of an entry.
Questions, answered
Will adding one hour fix a guide showing another channel’s programmes?
A time shift changes timing, not channel identity. First check that the guide is mapped to the intended channel and regional edition before investigating an offset.