Ratio as the input picture, and then simply cut away the leftover parts usingįor a portrait picture, the resulting filterchain would be: zoompan=Ĭropping works when the aspect ratio of the video doesn’t differ muchįrom the input picture. Output video (which will certainly be the case for portrait pictures), one of theĪ first solution to this problem is to zoom/pan to a video of the same aspect This means that, if the input picture has a different aspect ratio than the The zoompan filter scales the input to the specified output dimensions. Putting it all together, zooming out from the bottom right would be done To zoom out instead of zooming in, we need to initialize the first frame toīe completely zoomed in, and decrease the zoom on every frame If we want to zoom to the bottom part of the picture, we specify y.If we want to zoom to the right part of the picture, we specify x toīe iw-iw/zoom (the input width, minus the width of the zoomed frame).If we only change the z parameter, the image will zoom in to the top left.īy also specifying the x and y parameters (which both default to 0), weĬan zoom in to other parts of the picture: Output to an H.264 movie (using the standard YUV420p pixel format). Per second), and the output size for the resulting video. Specified are the duration of the effect (4 seconds at the default 25 frames Here, we zoom in linearly 20% by addingĠ.002 to the previous zoom value on each frame. The zoompan filter takes a z expression that is evaluated for each frame to For example, to zoom in on an image: ffmpeg -i in.jpg Let’s start with the basics: applying a zoom effect to an image. In this post, I’ll walk through the steps ofĬreating slideshows using the Ken Burns effect. Need a new tool: you can get the same result using justįFMpeg. Where and how much pictures should be zoomed. Tool to create slideshow movies that used this effect, with full control over It always sounded like a fun project to create a standalone Instead of just showing a simple slideshow of yourĮffect with a fancy fading transition to make the otherwise static pictures One of the first things that impressed me about Mac OS X when I first saw it

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