Transcoding is enabled. The video quota only takes into account <x id="START_TAG_STRONG" ctype="x-strong" equiv-text="<strong>"/>original<x id="CLOSE_TAG_STRONG" ctype="x-strong" equiv-text="</strong> "/> video size. <x id="LINE_BREAK" ctype="lb" equiv-text="<br />"/> At most, this user could upload ~ <x id="INTERPOLATION" equiv-text="{{ computeQuotaWithTranscoding() | bytes: 0 }}"/>.
You can comment using an account on any ActivityPub-compatible instance. On most platforms, you can find the video by typing its URL in the search bar and then comment it from within the software's interface.