Why iPhone Videos Fail as Telegram Avatars—And How to Fix It

iPhone videos fail silently when converted to Telegram avatars—no error message, just an unexpected static frame—due to Telegram's strict but undocumented requirements (H.264 codec, square format, ≤10 seconds, no audio). This creates a classic UX problem where platform constraints that diverge sharply from device defaults leave users without guidance. As a result, understanding Telegram's hidden video specifications and mastering ffmpeg conversion becomes an essential—and otherwise avoidable—workaround.