Answers.Body: <p>Give this a try:</p>
  
  <pre><code>ffmpeg -i audio.m4a -loop 1 -r 2 -i image.jpg -c:a copy -c:v libx264 -preset ultrafast -shortest out.mp4
  </code></pre>
  
  <p><code>-r 2</code> sets the frame rate to 2 fps (some players seem to have problems with 1 fps).</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2012-12-26T19:25:21.850Z
Answers.LastActivityDate: 2012-12-26T21:51:59.140Z
Answers.LastEditDate: 2012-12-26T21:51:59.140Z
Answers.UserDisplayName: paulgrav
Body: <p>I'm making mp4 (libx264 + aac) videos that have just one static image throughout the whole video. It's basically a narrated text with a nice background.</p>
  
  <p>The question I've is how could I speed up encoding of such videos? Currently the videos are encoding at 50fps which is very, very slow. I can only encode 2000 videos on a single computer in one day.</p>
  
  <p>Any particular settings I could specify to ffmpeg or lib264 library to suggest that there is no motion, and it's just a single image that has to b</p>
  
  <p>For comparison, I was doing .avi (divx + mp3) videos before I moved to mp4, and I was able to encode 6000 - 8000 videos per day.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2013-01-18T22:44:59.263Z
Comments.Text: First, ideally this question should have the command and the ffmpeg output; second, divx is a much simpler codec than h264, all other things being equal you will inevitably get longer encode times with h264 (but smaller and/or better-quality output files).
Comments.UserDisplayName: evilsoup
Tags: <video><ffmpeg><encoding>
Title: How do I speedup encoding of a video that has just 1 static frame with ffmpeg and lib264 library?
UserDisplayName: bodacydo
ThreadText: # How do I speedup encoding of a video that has just 1 static frame with ffmpeg and lib264 library?
  
  (Asked by: username_0 on 2012-10-07)
  
  I'm making mp4 (libx264 + aac) videos that have just one static image throughout the whole video. It's basically a narrated text with a nice background.
  
  The question I've is how could I speed up encoding of such videos? Currently the videos are encoding at 50fps which is very, very slow. I can only encode 2000 videos on a single computer in one day.
  
  Any particular settings I could specify to ffmpeg or lib264 library to suggest that there is no motion, and it's just a single image that has to b
  
  For comparison, I was doing .avi (divx + mp3) videos before I moved to mp4, and I was able to encode 6000 - 8000 videos per day.
  
  **Tags:** video, ffmpeg, encoding
  
  > **Comments:**
  > **username_1**: First, ideally this question should have the command and the ffmpeg output; second, divx is a much simpler codec than h264, all other things being equal you will inevitably get longer encode times with h264 (but smaller and/or better-quality output files).  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2012-12-26. Score: 1
  
  Give this a try:
  
  ```
  ffmpeg -i audio.m4a -loop 1 -r 2 -i image.jpg -c:a copy -c:v libx264 -preset ultrafast -shortest out.mp4
  
  ```
  
  `-r 2` sets the frame rate to 2 fps (some players seem to have problems with 1 fps).
  
  
  ---
  
  