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I've found a lot of solutions for creating a video from a folder of jpgs, in this case a time lapse stream of photos from a camera. Thats easy, but seems to waste a lot of computing power regenerating the whole mpg ever 30 seconds/minute/etc.

Is there a way to append jpgs to an exist mpg while keeping the same framerate and any other parameters?

My current video file is created using:

cat *.jpg | ffmpeg -f image2pipe -r 1 -vcodec mjpeg -i -r 30 - out.mpg


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