Back to the original thread idea for a minute...
At the risk of wasting everyones time again - here is an alternative.
I've tried this on a 2000T and it works - but will it work on the 4000T?
A quick scan of the 4000T manual doesn't answer this question. You can copy a recorded programme from the Humax to a USB drive (from the Humax menu). But, if you delete the original from the internal HDD, can you copy the programme from the USB drive back to the same position on the internal HDD? *
If so, here is another variation on the method described earlier that might work.
I recorded a 1 minute clip from 5 live sports extra [R5SX] - being the smallest StdDef programme I could find. "5 live Formula 1_20160514_1318"
Also recorded NCIS from 5HD. "New_ NCIS_20160514_2058" (Yes, I did use padding!)
ftp'd all the R5SX files (except .ts) to my PC along with the "New_ NCIS_20160514_2058.ts" file.
On PC: Rename "New_ NCIS_20160514_2058.ts" to "5 live Formula 1_20160514_1318.ts"
Still on PC: Place all the files on a USB device, remove and insert USB device into Humax.
Use the Humax copy to upload files from USB device to Humax.*
At this point the Formula 1 files are unplayable. But if I ftp the "5 live Formula 1_20160514_1318.ts" file back to the PC it has already been decrypted. (Remember, this is really NCIS in HiDef)
*Is this possible on the 4000T, or - as I suspect - does this apply
...I was permitted to FTP them to the 'Downloads' folder, then found that I could move it to the 'Videos' folder, but this only moved the TS file, the NTS, HJM, & HJTSM files remained in the 'Downloads' folder.
where you could read 'USB drive' for 'Downloads'. Even so, might be worth checking whether .ts file is still encrypted.