resize_videos.sh

#!/bin/bash

# The folder with the high-resolution videos
VIDEO_DIR="videos/chunk-000/observation.images.wrist"

# Loop through all mp4 files in the directory
for file in "$VIDEO_DIR"/*.mp4; do
  echo "Processing $file ..."
  # Use ffmpeg to re-encode the video to a temporary file, then replace the original.
  # This is safer than overwriting. The "-loglevel error" keeps the output clean.
  ffmpeg -loglevel error -i "$file" -vf "scale=1280:960" -c:a copy "temp.mp4" && mv "temp.mp4" "$file"
  echo "Done."
done

echo "All videos have been resized."