Since version 10+ which ditched the companion app in favor of an integrated all-in-one approach, any videos I try to download from online streaming websites are saved in a broken unplayable state on my hard disk once downloaded. The only solution was to manually downgrade to v9.5.0.2 (which uses the companion app) + disable automatic updates. That fixed the issues. VDH developers, please take note. I will revise my rating upwards once these issues are resolved. I'm using it on Linux btw, so that may also have something to do with it.