: If you have a WhatsApp backup from early 2023, restoring it might recover the file.
: The sender may have deleted it, or it was removed from your phone to save space. VID-20221231-WA0316.mp4
: Open WhatsApp, go to the chat where you might have received it, tap the contact/group name, and select Media, Links, and Docs . : If you have a WhatsApp backup from