Agadtaiaakxheeq.mkv

The .mkv extension indicates it is a Matroska Video file, which is a high-definition container format capable of holding multiple audio tracks, subtitles, and high-quality video. How to Identify the Actual Content

If you still have the chat, look for a video file sent around the time this file was created. AgADtAIAAkXhEEQ.mkv

This specific naming convention ( AgAD... ) is a unique file ID generated by Telegram. AgADtAIAAkXhEEQ.mkv