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vine_user
Asked: 2012-06-27 11:15:15 +0800 CST

How to add Fade-out and Fade-in Effects by convert command?

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convert command can make the mpeg video from the several pictures.

For example:

convert -delay 300 *.png test.mpg

Well, is it possible to add Fade-out and Fade-in effects into the mpeg video by using convert ?

If it is possible, how can I do it?

convert

1 Answers

  1. Best Answer

    I'd personally stick to video tools for generating video. Imagemagick is pretty awesome but it's no ffmpeg. ffmpeg (or avconv as it's now known) can handle both frame-stitching and fade options in one go:

    ffmpeg -r 24 -b 500000 -i frame%05d.png -vf fade=out:155:45 output.mp4

    If you're not familiar with ffmpeg, here's a quick translation of that command:

    • 24fps
    • ~500kbps bitrate
    • Uses all images called frame{00000..99999}.png
    • starts fading out at at frame 155 with a fade duration of 45 frames
    • outputs to output.mp4

    ffmpeg also gives you a ton of options about handling audio, codecs, containers, etc that Imagemagick wont, but I'm leaving that well alone. Have a play.

    Edit: I was originally making this up on the spot but I can confirm that this works just as expected/described.

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