I got a unusable reply from support about this saying. I asked about audio and get a response about video: The free versions are limited in the formats supported, effects included, etc. For example, the free version of VideoPad will only allow you to export to a few video formats.
And I asked again without reply. Why should I pay, if I do not exactly know, if my audio files can be saved with 320kbps, when my original audio file is 510kbps ?