Google+ has a nifty feature – known as ‘auto awesome’ – where it detects runs of photos which may be compiled together into short animations, automatically creating these animations for you.

If uploading all your images to Google+ to create a few animations seems a little excessive, you can create your own using ImageMagick:

convert -resize 1024x1024 -delay 20 *.JPG output.gif

Update: ffmpeg can do the pretty much the same thing for movies which are a far more efficient format but require a little more work to embed:

ffmpeg -r 5 -pattern_type glob -i '*.JPG' -c:v libx264 -pix_fmt yuv420p output.mp4