Body: <p>If I'm encoding files like this:</p>
  
  <pre><code>ffmpeg -v quiet -hide_banner -y -i "$f" -passlogfile "$TEMP_FOLDER/ffmpeg.log" -c:v libx264 -b:v 2.5M -maxrate 2.5M -bufsize 5M -profile:v high -level 4.1 -pass 1 -sn -an -f matroska /dev/null &lt; /dev/null
  ffmpeg -v quiet -hide_banner -y -i "$f" -passlogfile "$TEMP_FOLDER/ffmpeg.log" -c:v libx264 -b:v 2.5M -maxrate 2.5M -bufsize 5M -profile:v high -level 4.1 -sn -an -pass 2 -f matroska "${f%.*}".h264 &lt; /dev/null
  </code></pre>
  
  <p>Would setting preset speed increase quality? Should I use it on the first pass or the second ?</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-03-18T05:22:26.430Z
Comments.Text: Yes, slower presets will yield better quality or a lower bitrate. Use in both passes.
Comments.UserDisplayName: Gyan
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-03-18T09:21:07.410Z
Comments.Text: Thanks Gyan! If you want to elaborate it and post it I can accept it as answer. I trust you :)
Comments.UserDisplayName: Freedo
Tags: <ffmpeg>
Title: Does ffmpeg preset speed affects 2 pass encoding?
UserDisplayName: Freedo
ThreadText: # Does ffmpeg preset speed affects 2 pass encoding?
  
  (Asked by: username_0 on 2020-03-18)
  
  If I'm encoding files like this:
  
  ```
  ffmpeg -v quiet -hide_banner -y -i "$f" -passlogfile "$TEMP_FOLDER/ffmpeg.log" -c:v libx264 -b:v 2.5M -maxrate 2.5M -bufsize 5M -profile:v high -level 4.1 -pass 1 -sn -an -f matroska /dev/null < /dev/null
  ffmpeg -v quiet -hide_banner -y -i "$f" -passlogfile "$TEMP_FOLDER/ffmpeg.log" -c:v libx264 -b:v 2.5M -maxrate 2.5M -bufsize 5M -profile:v high -level 4.1 -sn -an -pass 2 -f matroska "${f%.*}".h264 < /dev/null
  
  ```
  
  Would setting preset speed increase quality? Should I use it on the first pass or the second ?
  
  **Tags:** ffmpeg
  
  > **Comments:**
  > **username_1**: Yes, slower presets will yield better quality or a lower bitrate. Use in both passes.  
  > **username_0**: Thanks username_1! If you want to elaborate it and post it I can accept it as answer. I trust you :)  
  
  ---
  
  ## 0 answers
  
  