"Compression Artifacting" is the adverse effect of image degradation where the image complexity exceeds the necessary bit rate/ bit depth.
Compression Artifacting impacts the Technical Quality of the Asset. Customer experience is negatively impacted by a poor quality image, and any further downstream compression will only enhance any artifacts already existing in the mezzanine.
Enhanced digital activity or macro blocking in portions of or across entire image.
How to Prevent:
Verify the source clips are of the best possible quality.
Check the export profile of the master asset and ensure that the proper compression levels were utilized.
Re-export using proper compression levels or replace with higher quality footage requiring less compression.