I’m trying to add a dynamic progress bar to the bottom of a video using ffmpeg on my Mac. Here’s the command I’m currently using:

ffmpeg -i “/Volumes/hard-drive/Auto-pilot-video/upload-ready-video/one-two-ka-four.mp4” -filter_complex
“[0:v]drawbox=y=ih-20:[email protected]:width=iw*(t/606.15):height=20:t=fill[v]”
-map “[v]” -map 0:a -c:a copy -preset fast output.mp4

Question:

As you can see in the image right now, it just a fixed yellow bar at the bottom of the screen. But instead of just fixed at bottom I want a dynamically moving bar at the bottom.

Is it possible to create a dynamic progress bar using ffmpeg filters on macOS? If so, could you please suggest the appropriate filter(s) and their configuration for achieving this effect?