Body: <p>When I convert a video with <code>ffmpeg</code>, and use <code>mediaInfo</code> to review the metadata, I see the followings for the video codec:</p>
  <pre><code>Format : AVC 
  Format/Info : Advanced Video Codec 
  Format profile : Baseline@L3.1 
  Format settings : 1 Ref Frames 
  </code></pre>
  <p>Whereas for some other videos, <code>mediaInfo</code> shows this:</p>
  <pre><code>Format : AVC 
  Format/Info : Advanced Video Codec 
  Format profile : High@L4.2 
  Format settings : CABAC / 4 Ref Frames 
  </code></pre>
  <p>What are the differences between these two profiles and settings? Do they have any effects on the compression ratio/file sizes? Any pros/cons? My goal is to reduce the video file sizes at much as possible with negligible quality degradation.</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2022-04-15T04:39:50.737Z
Comments.Text: More ref frames = better compression. Higher profile = better compression.
Comments.UserDisplayName: Gyan
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2022-04-15T12:52:59.390Z
Comments.Text: How about quality? Encoding execution time?
Comments.UserDisplayName: angel_30
Tags: <ffmpeg><video><video-quality><codec><h.264>
Title: H264 AVC codec Baseline@L3.1 vs High@L4.2
UserDisplayName: angel_30
ThreadText: # H264 AVC codec Baseline@L3.1 vs High@L4.2
  
  (Asked by: username_0 on 2022-04-14)
  
  When I convert a video with `ffmpeg`, and use `mediaInfo` to review the metadata, I see the followings for the video codec:
  
  ```
  Format : AVC 
  Format/Info : Advanced Video Codec 
  Format profile : Baseline@L3.1 
  Format settings : 1 Ref Frames 
  
  ```
  
  Whereas for some other videos, `mediaInfo` shows this:
  
  ```
  Format : AVC 
  Format/Info : Advanced Video Codec 
  Format profile : High@L4.2 
  Format settings : CABAC / 4 Ref Frames 
  
  ```
  
  What are the differences between these two profiles and settings? Do they have any effects on the compression ratio/file sizes? Any pros/cons? My goal is to reduce the video file sizes at much as possible with negligible quality degradation.
  
  **Tags:** ffmpeg, video, video-quality, codec, h.264
  
  > **Comments:**
  > **username_1**: More ref frames = better compression. Higher profile = better compression.  
  > **username_0**: How about quality? Encoding execution time?  
  
  ---
  
  ## 0 answers
  
  