Body: <p>I would like to apply a .png on two frames of my input video but
  I'm having trouble using an if statement to determine the location of the overlay.</p>
  <p><strong>Expected:</strong> <br />
  Frame n°7 -&gt; Frame n°7 + overlay.png with pos(300,700) <br />
  Frame n°12 -&gt; Frame n°12 + overlay.png with pos(0,0) <br />
  Frame n°?? -&gt; Frame n°??</p>
  <p>Here is the ffmpeg command found on this post with similar use-cases: <a href="https://video.stackexchange.com/questions/24330/how-to-have-an-overlay-move-to-specific-points-at-specific-frames-using-ffmpeg">How to have an overlay move to specific points at specific frames using ffmpeg</a></p>
  <pre><code>ffmpeg -i input.mkv -i overlay.png -filter_complex &quot;[0:v][1:v]overlay=x='if(eq(n,7),300,0)':y='if(eq(n,7),700,0)':enable='eq(n,7)+eq(n,12)'[out]&quot; -map [out] output.mkv
  </code></pre>
  <p>But in my case, the if condition <code>x='if(eq(n,7),300,0)'</code> and <code>y='if(eq(n,7),700,0)'</code> always return false and I do not understand why this is happening.</p>
  <p>Thanks!</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2024-05-03T12:59:55.153Z
Comments.Text: `...:enable='eq(n,6...` in x y → n starts from 1? in enable → n starts from 0?
Comments.UserDisplayName: Баяр Гончикжапов
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2024-05-03T13:21:22.147Z
Comments.Text: @БаярГончикжапов
  It works! Thank you very much!
Comments.UserDisplayName: legeba
Tags: <ffmpeg><video>
Title: ffmpeg - Trouble using if statement with overlay
UserDisplayName: legeba
ThreadText: # ffmpeg - Trouble using if statement with overlay
  
  (Asked by: username_0 on 2024-05-03)
  
  I would like to apply a .png on two frames of my input video but
  I'm having trouble using an if statement to determine the location of the overlay.
  
  **Expected:**   
  Frame n°7 -> Frame n°7 + overlay.png with pos(300,700)   
  Frame n°12 -> Frame n°12 + overlay.png with pos(0,0)   
  Frame n°?? -> Frame n°??
  
  Here is the ffmpeg command found on this post with similar use-cases: [How to have an overlay move to specific points at specific frames using ffmpeg](https://video.stackexchange.com/questions/24330/how-to-have-an-overlay-move-to-specific-points-at-specific-frames-using-ffmpeg)
  
  ```
  ffmpeg -i input.mkv -i overlay.png -filter_complex "[0:v][1:v]overlay=x='if(eq(n,7),300,0)':y='if(eq(n,7),700,0)':enable='eq(n,7)+eq(n,12)'[out]" -map [out] output.mkv
  
  ```
  
  But in my case, the if condition `x='if(eq(n,7),300,0)'` and `y='if(eq(n,7),700,0)'` always return false and I do not understand why this is happening.
  
  Thanks!
  
  **Tags:** ffmpeg, video
  
  > **Comments:**
  > **username_1**: `...:enable='eq(n,6...` in x y → n starts from 1? in enable → n starts from 0?  
  > **username_0**: @username_1 It works! Thank you very much!  
  
  ---
  
  ## 0 answers
  
  