I cannot find anywhere in all the files for this programme the name Blackadder, and yet it still persists when I press the info button when playing back.
My conclusion is that the info has to be somewhere else on the HDD.
In the .ts file itself?
Test: Taking a recording which spans two programmes. Decrypted but not stripped. Playing the file via the HDR, the i-panel shows the EPG data and synopsis for Programme 1 when you are watching Programme 1, and change to show the details for Programme 2 when you are watching Programme 2. This data seems to be 'in' the .ts file, not the .hmt file, because playing the .ts file with VLC shows the programme title from the EPG for Programme 1 at the top of the screen, and this will then change to show the programme name for Programme 2.
However once the recording has been 'stripped', the i-panel shows only one set of details throughout and VLC only shows the .ts filename continuously. If the programme was recorded live, or time-shifted, the i-panel of a stripped recording shows the first programme data encountered, but for an AR or padded recording it shows the data for the target programme.
(Also see in VLC when playing a file - Tools menu, Media/Codec Information)
Some of this discovery occurred during trying to get files which had the correct titles/data/synopsis (as per my inept workaround mentioned earlier in this thread) Also I found that decrypted and unstripped files always play nicely with VLC - but occasionally a decrypted and stripped and cropped file does not - and the files that won't play usually show some random programme name (from the same Mux) along the top of the screen. To get them to play the file has to be re-cropped. I figured its something in the lead-in of the .ts file which has to be correct or lined-up with the target programme in order to play on VLC.
HTH, but if it doesn't, then good luck and Merry Thursday