Credit line on video

If I design motion graphic for client using after effects, and use assets of Adobe stock ( photos, illustration, vectors) (enhanced license) in this video and effects and modifications on assets using after effects. 

Must I add credit line on this video?

If the client will view it on YouTube, do I must to add credit line on this video?

If the client will view it on Facebook,  do I must to add credit line on this video? And Do I can use standard license?

Do I can add audio of Adobe stock to create motion graphic video using after effects with adding any assets of Adobe stock if the client will view the video on Facebook?