Answers.Body: <p>See these two links:</p>
  
  <p>1) <a href="https://en.wikibooks.org/wiki/MeGUI/x264_Settings" rel="nofollow">MeGUI/x264 Settings</a> for an explanation of the parameters like keyint.</p>
  
  <p>2) <a href="http://forum.doom9.org/showthread.php?t=165197" rel="nofollow">About --keyint --min-keyint and --scenecut</a> for a discussion at Doom9 about how they interact, specifically</p>
  
  <blockquote>
    <p>--keyint is the maximum interval. x264 will insert key frames earlier if it deems them beneficial, e.g. due to a scene change. From my
    experience the majority of key frames are in place because of the
    properties of the video, not because keyint was reached. The larger
    --keyint is the smaller the impact on overall key frame placement should be.</p>
  </blockquote>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-11-22T11:18:06.317Z
Answers.Text: Oh well I see, the name of the setting could have been max-keyint so ;D all would have been more clear this way..
Answers.UserDisplayName: user3450548
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-11-22T11:46:25.267Z
Answers.Text: You can enforce fixed GOP size by setting both to same value.
Answers.UserDisplayName: Gyan
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-11-22T12:17:44.933Z
Answers.Text: Oh yes, nice solution :)
Answers.UserDisplayName: user3450548
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Answers.CreationDate: 2015-11-22T11:16:03.937Z
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Answers.UserDisplayName: Gyan
Body: <p>Fiddling with the h264 and h265 params I found both <strong>keyint</strong> and <strong>min-keyint</strong> settings.</p>
  
  <p>Setting keyint shouldn't force the codec library to use exactly that frame interval?</p>
  
  <p>Do min-keyint have something to do with scene detection and if set it take priority over keyint plain setting ?</p>
  
  <p>TL;DR: I found that h265 default settings are keyint=250 and min-keyint=25 ... what I should expect from that? A fixed length GOP or a variable length one?</p>
  
Tags: <h.264><h.265>
Title: h264 and h265 keyint params settings
UserDisplayName: user3450548
ThreadText: # h264 and h265 keyint params settings
  
  (Asked by: username_0 on 2015-11-22)
  
  Fiddling with the h264 and h265 params I found both **keyint** and **min-keyint** settings.
  
  Setting keyint shouldn't force the codec library to use exactly that frame interval?
  
  Do min-keyint have something to do with scene detection and if set it take priority over keyint plain setting ?
  
  TL;DR: I found that h265 default settings are keyint=250 and min-keyint=25 ... what I should expect from that? A fixed length GOP or a variable length one?
  
  **Tags:** h.264, h.265
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2015-11-22. Score: 2 | Accepted answer
  
  See these two links:
  
  1) [MeGUI/x264 Settings](https://en.wikibooks.org/wiki/MeGUI/x264_Settings) for an explanation of the parameters like keyint.
  
  2) [About --keyint --min-keyint and --scenecut](http://forum.doom9.org/showthread.php?t=165197) for a discussion at Doom9 about how they interact, specifically
  
  > --keyint is the maximum interval. x264 will insert key frames earlier if it deems them beneficial, e.g. due to a scene change. From my
  > experience the majority of key frames are in place because of the
  > properties of the video, not because keyint was reached. The larger
  > --keyint is the smaller the impact on overall key frame placement should be.
  
  > **Comments:**
  > **username_0**: Oh well I see, the name of the setting could have been max-keyint so ;D all would have been more clear this way..  
  > **username_1**: You can enforce fixed GOP size by setting both to same value.  
  > **username_0**: Oh yes, nice solution :)  
  
  ---
  
  