title: setting cpu thread in ffmpeg
body: <p>I have a PC 24 Thread and when I use ffmpeg I only use 25% of my CPU usage. so how can all of these 24 threads be used? so my CPU usage reaches 100%, because if it's 25% it's still a slow process</p>
  
  <p>example:</p>
  
  <p>ffmpeg -i video01.mkv -i watermark.png -filter_complex "overlay = 10: 10" output01.mkv</p>
  
  <p>how to set 24 cpu threads?</p>