Body: <p>Hello you beautiful people. I am currently figuring out how to use ffmpeg and asked myself a question. Usually, when using a vignette on a video, I would do the following:</p>
  
  <pre><code>ffmpeg -i input.mp4 -vf vignette=PI/4 output.mp4
  </code></pre>
  
  <p>This will obviously re-encode the video and thus I will lose quality. I could try using a lossless codec (such as libx264 with -crf 0 and -preset veryslow) and did so, but here's what I'm curious about:</p>
  
  <p>Is it possible to create a Pass that only contains the vignette, to then merge the vignette plate with the video?</p>
  
  <p>I would suspect that such a thing would be much less tedious for lossless vignetting, no?</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-06-20T10:00:30.520Z
Comments.Text: *then merge the vignette plate with the video* --> as in combine with original video within a new file? Not possible.
Comments.UserDisplayName: Gyan
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-06-21T07:29:21.590Z
Comments.Text: No? Aw man that's too bad :(
Comments.UserDisplayName: Florian Claaßen
Tags: <ffmpeg>
Title: FFMPEG - Merging Video with Vignette-Only-Plate?
UserDisplayName: Florian Claaßen
ThreadText: # FFMPEG - Merging Video with Vignette-Only-Plate?
  
  (Asked by: username_0 on 2019-06-20)
  
  Hello you beautiful people. I am currently figuring out how to use ffmpeg and asked myself a question. Usually, when using a vignette on a video, I would do the following:
  
  ```
  ffmpeg -i input.mp4 -vf vignette=PI/4 output.mp4
  
  ```
  
  This will obviously re-encode the video and thus I will lose quality. I could try using a lossless codec (such as libx264 with -crf 0 and -preset veryslow) and did so, but here's what I'm curious about:
  
  Is it possible to create a Pass that only contains the vignette, to then merge the vignette plate with the video?
  
  I would suspect that such a thing would be much less tedious for lossless vignetting, no?
  
  **Tags:** ffmpeg
  
  > **Comments:**
  > **username_1**: *then merge the vignette plate with the video* --> as in combine with original video within a new file? Not possible.  
  > **username_0**: No? Aw man that's too bad :(  
  
  ---
  
  ## 0 answers
  
  