Clipping is not a rights transfer.
Film, television, music, subtitles, artwork, and other media remain the property of their respective owners.
Before sharing
Consider the length, purpose, audience, and source of a clip before sharing it. Laws vary by location and context. Quote Clipper cannot decide whether a particular use is licensed or fair use.
Reporting
A formal copyright-reporting path will be published before private web sharing opens beyond invited beta testers.