Create Picture-Song Video

I need a simple code solution to bind a single WEBM picture to an MP3 song file, creating a video that can be uploaded to Facebook.

Requirements

- Input: One WEBM image and one MP3 audio file - Output: Video file ready for Facebook upload - No specific software requirements Ideal skills and experience: - Experience with video processing and encoding - Familiarity with video formats and audio-video synchronization - Knowledge of Facebook video upload requirements