I've seen answers saying it may be too big to be forwarded. This is odd because the video in question was forwarded (rather than sent) by someone else to me. Also, if I can download it to my laptop it then attach it to a fresh whatsapp message OK, then it's unlikely to be a size issue, methinks. So what's up with whats app ?
I'm running Chrome Version 97.0.4692.99 (Official Build) (64-bit)