Anime, icons, and music used in AMVs are often protected by copyright. Creating edits using copyrighted materials without permission from the copyright holders could potentially be a copyright infringement.
Fair Use: Some countries have exceptions to copyright laws, like "fair use" in the United States, which allows for certain uses of copyrighted material for purposes like criticism, commentary, news reporting, education, and parody. However, whether a specific use qualifies as fair use is often determined on a case-by-case basis and can be subject to legal interpretation. These rules may restrict certain types of content or use of copyrighted material, even if you're not making money from.
Transformative Work: The concept of transformative work is relevant to fair use discussions. Transformative work adds significant creative or original elements to the copyrighted content, resulting in a new, substantially different work. If your edits substantially transform the original content