Overlay Image into Video

  ffmpeg -i /Users/nickolaykondratyev/Downloads/Restaurant_Song_2.0_.mp4 -i image.png -filter_complex "[0:v][1:v] overlay=(W-w)/2:(H-h)/2:enable='between(t,2,10)'" -codec:a copy output_video.mp4

Let's break down the command segment "[0:v][1:v] overlay=(W-w)/2:(H-h)/2:enable='between(t,2,10)'":

Components of the Command

1. [0:v][1:v]:

   • These represent the video streams that are being processed.
   • [0:v] refers to the first video stream, which is the input video (input_video.mp4).
   • [1:v] refers to the second video stream, which is the image (image.png).
   • In FFmpeg, the index 0, 1, etc., indicate the input file index. The v stands for the video stream.

2. overlay=(W-w)/2:(H-h)/2:

   • The overlay filter is used to place one video (or image) on top of another.
   • W and H are the width and height of the main video ([0:v]), respectively.
   • w and h are the width and height of the overlay image ([1:v]), respectively.
   • (W-w)/2: This calculates the horizontal position where the overlay should be placed, centering it horizontally on the video.
   • (H-h)/2: This calculates the vertical position where the overlay should be placed, centering it vertically on the video.
   • The result is that the image is centered on the video frame.

3. enable='between(t,2,10)':

   • The enable option controls when the overlay filter should be active.
   • t represents the current timestamp in the video (in seconds).
   • between(t,2,10) is a condition that makes the overlay active only when the timestamp is between 2 seconds and 10 seconds.
   • So, the image will only appear from 2 seconds to 10 seconds in the video.

Putting It All Together

This command:

• Takes the main video and an image.
• Centers the image on top of the video.
• Displays the image only between the 2nd and 10th seconds of the video.

The entire filter expression [0:v][1:v] overlay=(W-w)/2:(H-h)/2:enable='between(t,2,10)' instructs FFmpeg to take the first video input and overlay the second video input (the image), positioning it in the center of the video, and making it visible only between 2 and 10 seconds into the video.