Creating a GIF with Custom Frame Durations in Python

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Question:

In python using imageio.mimsave gif file. How to make the duration of last frame is 3 seconds while those of other frames are 0.5 seconds, and the gif will loop for ever

Answer:

To create a GIF using imageio.mimsave in Python where the duration of the last frame is 3 seconds and the duration of all other frames is 0.5 seconds, you can specify the duration for each frame individually. Here's how you can do it:

  1. Install the imageio library if you haven't already:

    pip install imageio
    
  2. Use the imageio.mimsave function to save the GIF, specifying the duration for each frame.

Here's a complete example:

import imageio

# List of image file paths or numpy arrays representing the frames
frames = ['frame1.png', 'frame2.png', 'frame3.png']  # Replace with your actual frames

# Define the duration for each frame
durations = [0.5] * (len(frames) - 1) + [3.0]  # 0.5 seconds for all frames except the last one which is 3 seconds

# Save the frames as a GIF
imageio.mimsave('output.gif', frames, duration=durations, loop=0)

In this example:

  • frames is a list of file paths to the images or numpy arrays that you want to include in the GIF.
  • durations is a list where each element specifies the duration for the corresponding frame in the frames list. The last frame has a duration of 3 seconds, while all other frames have a duration of 0.5 seconds.
  • The loop=0 parameter makes the GIF loop forever.

If your frames are numpy arrays instead of file paths, you can directly pass the list of arrays to imageio.mimsave.

Here's an example with numpy arrays:

import imageio
import numpy as np

# Create some example frames as numpy arrays
frame1 = np.zeros((100, 100, 3), dtype=np.uint8)  # Black frame
frame2 = np.ones((100, 100, 3), dtype=np.uint8) * 255  # White frame
frame3 = np.full((100, 100, 3), 127, dtype=np.uint8)  # Gray frame

frames = [frame1, frame2, frame3]

# Define the duration for each frame
durations = [0.5] * (len(frames) - 1) + [3.0]  # 0.5 seconds for all frames except the last one which is 3 seconds

# Save the frames as a GIF
imageio.mimsave('output.gif', frames, duration=durations, loop=0)

This will create a GIF with the specified frame durations and make