The Problem Nobody Warns You About You open Telegram, try to set a video avatar, upload a clip from your iPhone, and nothing happens. No error. The upload completes, Telegram just silently ignores it. If you're lucky, you get a generic "wrong format" toast. Usually you get nothing. The issue is HEVC (H.265). Every iPhone since 2017 records in HEVC by default. Telegram's video avatar feature requires H.264, yuv420p pixel format, 800x800 resolution, under 10 seconds, under 2MB, and no audio track. HEVC satisfies zero of those constraints. Telegram doesn't tell you any of this. I ran into this personally, got annoyed, and built a bot to fix it.…