Answers.Body: <p>They differ in rate of progression, i.e. fade is a linear progression, so that at half the duration, fade status is 50% i.e. both inputs are equally mixed. For fadefast, it starts fast and then slows down. Opposite for fadeslow.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2023-02-08T04:21:17.090Z
Answers.LastActivityDate: 2023-02-08T04:21:17.090Z
Answers.UserDisplayName: Gyan
Body: <p>In the <code>xfade</code> filter, the speed of transition may be controlled by the <code>duration=</code> parameter – longer duration implies slower transition and vice versa.</p>
  <p>So why are there – beside the <code>fade</code> value for the <code>transition=</code> parameter – other 2 values for the same effect, <code>fadefast</code> and <code>fadeslow</code>? What is the difference?</p>
  
Tags: <ffmpeg><transitions>
Title: Fade transition - fade vs. fadefast vs. fadeslow
UserDisplayName: MarianD
ThreadText: # Fade transition - fade vs. fadefast vs. fadeslow
  
  (Asked by: username_0 on 2023-02-07)
  
  In the `xfade` filter, the speed of transition may be controlled by the `duration=` parameter – longer duration implies slower transition and vice versa.
  
  So why are there – beside the `fade` value for the `transition=` parameter – other 2 values for the same effect, `fadefast` and `fadeslow`? What is the difference?
  
  **Tags:** ffmpeg, transitions
  
  
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  ## 1 answers
  
  ### Answer by username_1 on 2023-02-08. Score: 1 | Accepted answer
  
  They differ in rate of progression, i.e. fade is a linear progression, so that at half the duration, fade status is 50% i.e. both inputs are equally mixed. For fadefast, it starts fast and then slows down. Opposite for fadeslow.
  
  
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