Say you have video such as this one on Facebook. Most of these come with hardcoded subtitles, which we’d like to extract (for whatever reason).
Opening the page in Chrome and inspecting the network requests quickly uncovers the media URL:
https://video-bru2-1.xx.fbcdn.net/v/t42.9040-2/10000000_703970666457205_4416008794480312320_n …