FFMPEG : Combine images into a video

In this article we will see how to create a video from images thanks to the power of FFMPEG. It can be very useful to auto generate video content for various use cases : e-learning, tutorials or even Instagram stories ! This will resemble something like this :

Combine images into a video using FFMPEG

To combine easily different images into a single video, we need to ensure that all our images have the same width and height as our final video, are in the same folder named pictures and named in order according to a specific pattern like 001.jpeg, 002.jpeg, 003.jpeg, etc

In that example, we choose to generate a .mp4 video with the libx264 codec (most common).

Let’s see how we can use FFMPEG to turn a sequence of images into a video :

Let's explain this command in details :

• -r 1 is the frame rate per second. If I have 10 images and want a 10 seconds video, the frame rate will be 1. If I have 10 images and want a 5 seconds video, the frame rate will be 2.
• -s 1080x1620 is the size of our result video and our images.
• -i pictures/%03d.jpeg is our inputs pictures. Note the pattern %03d that indicates our images can be named from 000.jpeg to 999.jpeg. Adjust it according to your needs.
• -vcodec libx264 is the video codec that we want to use
• -crf 25 is the quality of our video. For x264, sane values are between 18 and 28.
• output.mp4  is the name of the output file

The result : Images combined into a video using FFMPEG

Remember, we went from this :

Generate this video :

And voilà! You now know exactly how to generate a video using a sequence of images and FFMPEG. Note that if this tutorial felt a bit complicated and you'd like to use an API or a full blown SaaS to do this operation, you can use an auto video generation tool to do so. Those are especially useful when you need to generate videos in large volume or combine images into GIF or video at scale.

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