Older videos in WhatsApp from iPhone 14 not playing in iPhone 15 Pro Max

Hello all,

I have shifted to iPhone 15 Pro Max from my earlier iPhone 14 about a month ago. Before switching, I had taken the entire phone backup including the chats and videos from WhatsApp on iTunes and had restored the backup in my new iPhone 15 Pro Max. However, I have observed that I am unable to play the older videos in WhatsApp after this phone upgrade. This was not the case when I switched from iPhone 11 to iPhone 14. I had followed the same procedure of restoring from iTunes and could access my videos later. Please let me know how to resolve this issue.