ffmpeg -i creature.commandos.s01e06.openh264.mkv Look for: Video: h264 (OpenH264) | Step | Action | |------|--------------------------------------------------| | 1 | Download VLC or MPC-HC (Windows) / IINA (Mac) | | 2 | Open file — it should play immediately | | 3 | If issues → enable hardware decoding or remux | | 4 | Enjoy the episode | No special decoder needed — OpenH264 is just standard H.264. The filename is likely from a specific encoding group’s naming convention.