A Bash script for FFmpeg 4K video upscaling, merging, and watermarking is displayed in a terminal window.

My 4K Video Automation Script with FFmpeg & Zsh

Learn to automate your video workflow. This guide shows how to build a Bash script with FFmpeg to merge, 4K-upscale, and watermark vertical videos.

November 7, 2025 · 7 min · Murat Kurkoglu