In CA API Portal 4.2.7.4 the videos in the main page are not playing

Document ID : KB000104907
Last Modified Date : 05/07/2018
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Issue:
After installing CA API Portal EE 4.2.7.4, all videos in the main intro page displays below errors in black screen.

Error when clicking a video in API Portal 4.2.7.4
 
Cause:
This is a known issue with Portal 4.2.7.x as the links are broken.
Resolution:
This is a known issue with 4.2.7.x which is placed to be fixed in 4.2.8