Body: <p>I have some fundamental questions on shots and I-frames. When we apply shot detection on a video, how many I-frames will exist in a shot? How many frames exist between two I-frames? And does the shot always start with an I-frame?</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-08-20T00:05:22.783Z
Comments.Text: It depends on the length of the shot, and the capture device and its settings. The GOP length(the length between I-frames) is not set in stone, it is one of the settings that can be adjusted when compressing video, and it can change within a shot. Perhaps you could specify what you're using to capture the video.
Comments.UserDisplayName: stib
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-08-20T03:17:12.737Z
Comments.Text: It's basically some movies, and I don't know the capture device. And I use FFmpeg to spli it into shots. I just realized it's more than 1s.
Comments.UserDisplayName: angel_30
Tags: <video><video-capture><keyframes>
Title: How many I-frames are in a single shot?
UserDisplayName: angel_30
ThreadText: # How many I-frames are in a single shot?
  
  (Asked by: username_0 on 2020-08-19)
  
  I have some fundamental questions on shots and I-frames. When we apply shot detection on a video, how many I-frames will exist in a shot? How many frames exist between two I-frames? And does the shot always start with an I-frame?
  
  **Tags:** video, video-capture, keyframes
  
  > **Comments:**
  > **username_1**: It depends on the length of the shot, and the capture device and its settings. The GOP length(the length between I-frames) is not set in stone, it is one of the settings that can be adjusted when compressing video, and it can change within a shot. Perhaps you could specify what you're using to capture the video.  
  > **username_0**: It's basically some movies, and I don't know the capture device. And I use FFmpeg to spli it into shots. I just realized it's more than 1s.  
  
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  ## 0 answers
  
  