Extracting Video from Motion Photos on Linux (opens in new tab)

Modern Android cameras can take "Motion Photos". They capture a few seconds of video from before and after you hit the shutter button. You can then either select the bit of the photo where no-one is blinking, or you can send the whole thing as a little movie. Some apps (like WhatsApp) will play the motion photo when the image is selected, others will just show a static image. So how do you…