Comment 5 for bug 1011710

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Eric Gregory (eric-yorba) wrote : Re: Crop progress activity spinner

For the record, ImageMagick/GraphicsMagick can build an MNG from a series of PNGs.

Say you have frame01.png, frame02.png, etc. and want a 100ms delay between each frame. The command to build the animation is:
convert -delay 100 frame*.png animation.mng