Manipulating Videos Using `ffmpeg`

Reduce a Video's Resolution by Half

ffmpeg -i <input_file> -vf "scale=iw/2:ih/2" -c:a copy <output_file>

• Use the scale filter with expressions to halve the width and height:
  • iw = input width, ih = input height.
• -c:a copy copies the audio stream without re-encoding.