Script to compress video with ffmpeg

compress-video.sh

#!/bin/bash

DIR="${1:-.}"
CRF="${2:-28}"

if ! command -v ffmpeg &> /dev/null; then
  echo "Error: ffmpeg is not installed or in PATH"
fi

if [ ! -d "$DIR" ]; then
  echo "Error: Directory $DIR does not exist"
  exit 1
fi

echo "Compressing MP4 files in $DIR"
echo "Using CRF value: $CRF"

echo "------------------"

count=0

for file in "$DIR"/*.mp4; do
  if [ ! -f "$file" ]; then
    echo "No MP4 files found in $DIR"
    exit 0
  fi

  filename=$(basename "$file" .mp4)
  dir=$(dirname "$file")

  if [[ "$filename" == *"compressed"* ]]; then
    echo "Skipping $file (compressed version already exists)"
    continue
  fi

  echo "Processing: $file"

  original_size=$(du -h "$file" | cut -f1)
  if ffmpeg -i "$file" -crf "$CRF" -c:v libx264 -c:a aac "$output" -y; then
    compressed_size=$(du -h "output" | cut f1)
    echo "✅ Completed $filename.mp4 ($original_size -> $compressed_size)"
    ((count++))
  else
    echo "x Failed to compress: $file"
    [ -f "$output" ] && rm "$output"
  fi

  echo "------------------------"
done

echo "Compression complete! Processed $count files."