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I'm trying to create a video file from a series of JPGs using the following command:-

ffmpeg -f image2 -i img*.jpg -s 640x480 movie.mpg

but it fails after generating a lot of output with the following:-

<lots of output, removed>
Stream #0.0 -> #89.0
Stream #0.0 -> #90.0
Stream #0.0 -> #91.0
Stream #0.0 -> #92.0
Press [q] to stop encoding
[mjpeg @ 0x95dfac0]get_buffer() failed (-1 0 0 (nil))
Video encoding failed

What's causing the error and how can I fix it?

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Welcome to AskUbuntu. Have you try ffmpeg -f image2 -i img*.jpg -r 1 -vcodec mjpeg -i - -vcodec libx264 -s 640x480 movie.mpg –  penreturns Oct 7 '12 at 19:06
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1 Answer 1

Glob syntax (*) won't work for image sequences. You must use %d for indicating where to look for the number (assuming that your image sequence is numbered, otherwise it will not work). Also you might specify an output framerate with -r

ffmpeg -f image2 -i img%d.jpg -r 25 -s 640x480 movie.mpg

This takes the images img0.jpg, img1.jpg, img2.jpg... and creates a video with 25 frames per second.

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The %d instead of * was the missing element! –  Skizz Oct 7 '12 at 20:37
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