Modern video codecs use data in frames before and sometimes after the current frame to compress more:<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Group_of_pictures" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Group_of_pictures</a><p>whereas analog media stored full resolution versions of every frame.<p>Seeking is much easier when you can pick any random location and have all the data right there ready to use, and you don&#x27;t have to backtrack and try to recreate things from previous frames.