Answers.Body: <p>The following video codec settings should be the most common for all devices</p>
  <pre><code>-c:v libx264 -profile:v baseline -level 3.0 -pix_fmt yuv420p
  </code></pre>
  <p>H.264 baseline profile and level 3.0 settings require less resources.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-12-14T01:51:58.670Z
Answers.LastActivityDate: 2021-12-14T01:51:58.670Z
Answers.UserDisplayName: xer-rex
Body: <p>This is my first time posting on this forum, so don't be too rough on me, haha.</p>
  <p>I have recently started taking up FFmpeg as a side project for my media class, and I am facing some problems when it comes to changing up some aspects of gamma/contrast.</p>
  <p>Whenever I use a command like this:</p>
  <p><code>ffmpeg -i input.mp4 -lavfi colorcontrast=gm=-1:gmw=1 -y -c:a copy output.mp4</code></p>
  <p>the problem I have is of playing the specific output video (the video is only available when it is played by QuickTime Player, yet when I try to open it on other video players or video editing programs a message appears that the video is unavailable).</p>
  <p>I have already been using other FFmpeg commands for cropping, removing audio track etc., however this is my first time trying and/or having a problem of this kind for more complex changes of video track.</p>
  <p>Thank you and have a great day!</p>
  
Tags: <ffmpeg>
Title: Changing up gamma with -lavfi and ffmpeg
UserDisplayName: kilo
ThreadText: # Changing up gamma with -lavfi and ffmpeg
  
  (Asked by: username_0 on 2021-12-13)
  
  This is my first time posting on this forum, so don't be too rough on me, haha.
  
  I have recently started taking up FFmpeg as a side project for my media class, and I am facing some problems when it comes to changing up some aspects of gamma/contrast.
  
  Whenever I use a command like this:
  
  `ffmpeg -i input.mp4 -lavfi colorcontrast=gm=-1:gmw=1 -y -c:a copy output.mp4`
  
  the problem I have is of playing the specific output video (the video is only available when it is played by QuickTime Player, yet when I try to open it on other video players or video editing programs a message appears that the video is unavailable).
  
  I have already been using other FFmpeg commands for cropping, removing audio track etc., however this is my first time trying and/or having a problem of this kind for more complex changes of video track.
  
  Thank you and have a great day!
  
  **Tags:** ffmpeg
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2021-12-14. Score: 0
  
  The following video codec settings should be the most common for all devices
  
  ```
  -c:v libx264 -profile:v baseline -level 3.0 -pix_fmt yuv420p
  
  ```
  
  H.264 baseline profile and level 3.0 settings require less resources.
  
  
  ---
  
  