Chunk Glitches!

I was playing in my survival world, and when I went into newly loaded chunks - It glitched out! every chunk was the same!!!! Here's the link to the video, because it's too big! https://drive.google.com/drive/folders/0BxnjIgtyNjaJfmdLU2Y0bnR2a05CQWxHSTVHcTJVQWlUbWFiQlhvTGpPcm4wTDdXQ2VLTHc?coldstart=true