atraczyk authored Dec 29, 2016 and Andreas Traczyk committed Jan 30, 2017

- uses memcpy instead of nested for loops to copy video buffers,
  as no operations are done per pixel, this gives a reduced copy
  time.

Change-Id: I43567997313d6aa8c9a0f8a56ccf0b8e6bcf963a
Tuleap: #790