I created a Youtube channel[1]. I will upload videos for the git history between each release of the Linux kernel, just for jun. I use gource[2] for the visualization for now. The scripts I use for these videos are available[3] under GPL v3. If you want, you may use the scripts for your own video generation.
[1] https://www.youtube.com/channel/UCI7qoGt1hOfCsI8hFqriYCg
[2] https://gource.io/
[3] https://github.com/sjp38/linux_development_visualization