<p>AVC intra and MJPEG are intra frame (keyframe) encoding only, each frame in your video will be encoded as a whole. Distance between key frames is a parameter for inter frame compression, where some pictures are encoded either as a whole (i-frames a.k.a. keyframes), and pictures between keyframes are encoded in reference to other frames either before (p-frames), or before &amp; after (b-frames).
If you uncheck custom distance between key frames, you essentially tell your encoder that you don’t care about it, and it will chose to add a key frame whenever it needs to, mostly depending on the amount of motion in the scene, and encoder implementation details. The more keyframes in your encoded video, the heavier the average bitrate / file size.
AVC intra is actually based on h264, but uses only keyframes, and no inter frame compression. MJPEG is basically a sequence of jpeg muxed in a video container.</p>

CC BY-SA 4.0
2019-08-02T11:30:37.257Z
Welcome to the video production stackexchange. Is there a way to force h264 into using intra frame compression only ?
Delta Oscar Uniform
CC BY-SA 4.0
2019-08-02T13:00:16.230Z
That depends on the encoder. The H.264 standard doesn't impose limits. If you can specify KF distance, set it to 1.
Gyan
CC BY-SA 4.0
2019-08-02T11:23:30.937Z
2019-08-02T11:23:30.937Z
user3626024
<p>The default is 72 which is in frames I suppose. However what happens if I simply uncheck it? Does it work like AVC Intra where key frames doesnt exist and every pixel in every frame is processed like in MJPEG?</p>

<premiere><encoding><h.264><keyframes><mpeg4>
What happens if you uncheck key frame distance in Premiere Pro CS6
Delta Oscar Uniform
# What happens if you uncheck key frame distance in Premiere Pro CS6

(Asked by: username_0 on 2019-07-27)

The default is 72 which is in frames I suppose. However what happens if I simply uncheck it? Does it work like AVC Intra where key frames doesnt exist and every pixel in every frame is processed like in MJPEG?

**Tags:** premiere, encoding, h.264, keyframes, mpeg4


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## 1 answers

### Answer by username_1 on 2019-08-02. Score: 2 | Accepted answer

AVC intra and MJPEG are intra frame (keyframe) encoding only, each frame in your video will be encoded as a whole. Distance between key frames is a parameter for inter frame compression, where some pictures are encoded either as a whole (i-frames a.k.a. keyframes), and pictures between keyframes are encoded in reference to other frames either before (p-frames), or before & after (b-frames).
If you uncheck custom distance between key frames, you essentially tell your encoder that you don’t care about it, and it will chose to add a key frame whenever it needs to, mostly depending on the amount of motion in the scene, and encoder implementation details. The more keyframes in your encoded video, the heavier the average bitrate / file size.
AVC intra is actually based on h264, but uses only keyframes, and no inter frame compression. MJPEG is basically a sequence of jpeg muxed in a video container.

> **Comments:**
> **username_0**: Welcome to the video production stackexchange. Is there a way to force h264 into using intra frame compression only ?  
> **username_2**: That depends on the encoder. The H.264 standard doesn't impose limits. If you can specify KF distance, set it to 1.  

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