ffscale

ffscale.sh

# A shell script that uses ffmpeg to shrink a video
# Usage: ffscale filename.mp4

function ffscale() {
    if [ "$1" != "" ]
    then     
        # Extract the file extension
        extension="${1##*.}"
        # Create a temporary file with the same extension (macOS/Linux compatible)
        temp_file=$(mktemp "/tmp/ffscale_XXXXXX.$extension")
        
        # Process the video to the temporary file
        ffmpeg -i "$1" -vf "scale=trunc(iw/3)*2:trunc(ih/3)*2" "$temp_file"
        
        # Check if ffmpeg succeeded
        if [ $? -eq 0 ]; then
            # Replace the original file with the processed one
            mv "$temp_file" "$1"
            echo "Successfully scaled and replaced: $1"
        else
            # Clean up temporary file if ffmpeg failed
            rm -f "$temp_file"
            echo "Error: Failed to process $1"
            return 1
        fi
    else
        echo "Usage: ffscale filename.mp4"
    fi
}