I would like to extract, say, 10 video frames from a given video file using ffmpeg, ideally uniformly distributed throughout the video. I know this can be done in a few ways, for example
ffmpeg -i input.mp4 -vf fps=1/10 out%03d.jpg
will output one image every 10 seconds. However, this is too slow for my liking and scales proportionally with the length of the video. I have read a bit about ffmpeg's seeking capability, for example
ffmpeg -ss 00:00:05 -i input.mp4 -frames:v 1 out001.jpg
will very quickly seek to the 5th second of the video and extract one frame. However I haven't come across a way to seek to multiple locations in the video without calling the above command repeatedly at various times.
Is there a quicker way of accomplishing this?
Using a long command, this can be done
eg
ffmpeg -ss 00:00:05 -i input.mp4
-ss 00:01:05 -i input.mp4
-ss 00:03:05 -i input.mp4
-ss 00:40:05 -i input.mp4
-map 0:v -frames:v 1 out001.jpg
-map 1:v -frames:v 1 out002.jpg
-map 2:v -frames:v 1 out003.jpg
-map 3:v -frames:v 1 out004.jpg
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