You likely already watched the English version of McDonalds feature on how the McRib is made. McDonalds has also provided another visit into the Lopez Foods plant in a Spanish oriented video. A few more shots of the production line that were not in the original.
https://www.youtube.com/watch?v=6YNUSNNN0Go&list=PLKkYatWHDPav7M30kRg5dqjQjleNOPsf0
https://www.youtube.com/watch?v=8waXIVC8new&list=PLKkYatWHDPav7M30kRg5dqjQjleNOPsf0&index=3