This is the selector function for video filter. -vf select= That's where all the magic happens.-frames 1 Tell ffmpeg that output from this command is just a single image (one frame).You can remove this option if you’re having any problems seeing what went wrong. -loglevel panic We don’t want to see any output.Generating a preview is just another one-liner where ffmpeg captures images and joins them into a single long film strip.įfmpeg -loglevel panic -y -i "video.mp4" -frames 1 -q:v 1 -vf "select=not(mod(n\,40)),scale=-1:120,tile=100x1" video_preview.jpg If you're looking for a way to extract only a certain number of frames from the video and merge them into one file, I would recommend the tutorial on this website: Then you can perform the calculation and insert the result into your command with the correct tile filter. If you want to do calculations based on the amount of frames, you will probably have to extract the nb_frames attribute from the output ofįfprobe -show_streams -i "big_buck_bunny.mp4"įirst. I'm not completely answering your question, but this might be of help finding it.
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