title: Applying two filters at once with FFMPEG
body: <p>i use this command for padding my video:</p>
  
  <pre><code>ffmpeg -i 1.mp4 -vf "pad=width=254:height=254:x=0:y=50:color=#ffff55" 2.mp4
  </code></pre>
  
  <p>and this command for adding watermark to the video:</p>
  
  <pre><code>ffmpeg -i 2.mp4 -vf drawtext="fontfile=arial.ttf: text='Stack Overflow': fontcolor=#ffff55: fontsize=24: box=1: boxcolor=black@0.5: x=(w-text_w)/2: y=(h-text_h)/2" -codec:a copy 3.mp4
  </code></pre>
  
  <p>i want to combine these two command in one command. i see <a href="https://stackoverflow.com/questions/6195872">this question</a> and try several times without success...</p>