FFmpeg Image Overlay Script

I’m looking to streamline an FFmpeg workflow that adds overlays to still images. The goal is to combine three overlay types—text, another image, and basic graphics or shapes—in a single, efficient command sequence.

Here’s what I need delivered:
• A set of well-commented FFmpeg commands (or a small shell/batch script) that apply text, image, and shape overlays in one pass.
• Clear parameters for positioning, scaling, color, font selection, opacity, and, if relevant, frame timing so I can reuse the commands across many images without rewriting them.
• Guidance on structuring the filter graph for the best speed on a headless Linux server processing hundreds of files.
• Any quick setup notes, such as installing custom fonts or referencing external PNG/SVG assets.

I’ll consider the job complete when your commands run cleanly on my sample set and I can tweak overlay options myself with minimal effort. If you’ve used drawtext, overlay, drawbox, or other complex_filter tricks before, this should be straightforward. Message me with a brief example of a similar FFmpeg image task you solved and a rough timeline so we can get started.