Feature

Hy sir plz add a feature which is -- bot also add watermark in video
Plz sir humble request
Or give me some hint that i can add it myself
Plz sir

The issue requests adding a watermark feature to a Telegram file rename bot. First, examine the bot's codebase to understand how it currently processes video files. Look for existing video handling modules and see if there are any libraries used for video manipulation (like moviepy or PIL). Determine where the watermark addition would fit in the file processing pipeline. Check if there are any existing tests for video processing to understand the expected behavior.

由索引模型根據 Issue 內容生成。