EXEC_SHELL_PATH=$(command -v bash)

if [ "$#" -ne 1 ]; then
    echo "Usage: $0 input_video"
    exit 1
fi

input_file="$1"
output_folder="$HOME/Videos/converted_for_compatibility"
temp_folder="/dev/shm"  # Use tmpfs to store files in RAM
temp_file="$temp_folder/temp-$(basename "$input_file")"
output_file="$output_folder/compatible-$(basename "$input_file")"

# Create the output folder if it doesn't exist
mkdir -p "$output_folder"

# Copy the input video to RAM
cp "$input_file" "$temp_file"

# Set the number of threads to 32 (adjust as needed)
threads=32

# Set the output resolution to 360p
output_resolution="640x360"

# Perform the encoding on the downscaled video in RAM
ffmpeg -i "$temp_file" -c:v libx264 -pix_fmt yuv420p -preset veryslow -crf 23 -s "$output_resolution" -threads "$threads" -y "$output_file"

# Check if the video got saved successfully
if [ $? -eq 0 ]; then
    echo "Video conversion successful. Output file: $output_file"
else
    echo "Error: Video conversion failed."
fi

# Clean up temporary file in RAM
rm -f "$temp_file"