What run test video? TestComplete, by default, does not generate a video of the test when the execution is run. Are you using CBT? If so, there is a video available but I'm not sure if it can be downloaded via TestComplete.
Why automate? I do automated testing because there's only so much a human being can do and remain healthy. Sleep is a requirement. So, while people sleep, automation that I create does what I've described above in order to make sure that nothing gets past the final defense of the testing group. I love good food, good books, good friends, and good fun.