WebIF OPT+ "Decrypt"? Note that this won't work until the recording has been in place long enough for the indexer to find it. If the recording is SdDef you could copy it using the standard menus OPT+ (not "move") to a USB drive or a virtual drive, which should decrypt it without further ado. If it's HiDef the "Enc" icon needs to be not present (WebIF or standard menus).
Auto-decrypt uses the same mechanism as the WebIF OPT+ "Decrypt" option, it just invokes the decrypt automatically instead of manually. For it to be viable several ducks need to be in the row, and normally it will not attempt a decrypt unless they are all present and correct:
- For HiDef, autounprotect needs to have modified the database record for the recording (clearing the "Enc" flag is an indication, but not the same as the database mod);
- "Content Sharing" (the DLNA server) needs to be turned on;
- The DLNA indexer needs to have made the recording available (WebIF DLNA icon).
The WebIF decrypt process then sets up a streaming request to the native DLNA server, the server passes the recording through the hardware decrypter on the way out, and the WebIF process captures the streamed data into a file which (when complete) is used to replace the original encrypted file.
Unfortunately there is no way the stream capture can tell the incoming information is actually decrypted. It presumes the resulting file is decrypted and sets the flags accordingly, and the vast majority of the time it works. On this occasion it appears not to have done, and it is unlikely the log will tell you anything because if the process knew it had failed it would not have switched the files at the end.
We have had situations reported where it appears that the Humax "forgot" its encryption keys until they were restored at next reboot. If that was the case here, it would explain what you have reported. The test is that any recordings made between the keys being forgotten and being restored by a reboot will only play before the reboot, and any (encrypted) recordings made prior to the keys being forgotten will not play until after the keys are restored. The same would apply to streamed recordings and decrypt-copy operations.
*If* the above is the case here, a reboot should sort you out, and if you like belt-and-braces make it a full cold start.
