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 tag identity
A MOV or MP4 file can contain several date fields, and a generic date taken label can conceal which one a tool chose. ExifTool documents that integer QuickTime date fields are specified as UTC, while some cameras write local time values instead. By default it does not assume a timezone for those values. Its QuickTimeUTC option changes that interpretation. Two displays can therefore disagree without either having observed a different actual filming event.
Work through an explicit assumption
An original example starts with a stored time of 12:00 and a known applicable local offset of plus two hours. If the stored value genuinely represents UTC, a local display of 14:00 follows from that assumption. If a camera instead stored its local 12:00, applying that interpretation again would produce a misleading shift. These invented values illustrate the decision, and cannot establish the correct interpretation of an unknown file without further evidence.
Inspect before rewriting history
Retain the original file, full tag names and groups, extraction options and known camera or export context. Compare a trusted reference event where one exists. Do not rewrite every date merely to make one application sort order look right. A metadata field is not authenticated proof of the capture time, and a filesystem copy date can answer another question. This article describes interpretation of a documented file convention, not a universal timestamp correction or an investigation of any private user recording.