Note that Downie may perform some postprocessing on its own even if this option is selected. For more information see below.
Postprocessing even with the option None selected
There are downloads that require postprocessing the downloaded video even when the postprocessing option is set to None. In general, there are two cases where this needs to be done:
Postprocessing and CPU usage
During the postprocessing, you may notice that the fans of your computer go off and the Activity Monitor may report e.g. 700% CPU usage. This is absolutely normal and there is nothing to worry about. Video conversion is a very CPU-intensive task. Computers are, however, built to work - the CPU is built to withstand long periods of time working at full speed without any damage. Moreover, macOS monitors the CPU temperature as well and modifies the CPU speed and fan speeds accordingly. If the CPU temperature were to climb to dangerous levels in case of a fan failure or if the fan grill was full of dust or lint, the computer will shut down before any damage can be done. If you believe that your computer is overheating and you are experiencing it shutting down during the conversion, please visit your Apple Store and ask them to clean your Mac's fans and check them for any damage.
If you experience the system being unresponsive and it prevents you from doing your work, you can pause the conversion in the main window by clicking on the pause button on the row with the download. In any case, please contact our support - we will ask you for additional information about your system.