: If you have chat backups enabled, you can restore your WhatsApp data to a date when the video was still present. Check your settings under Chats > Chat Backup .
: Check if your device automatically backed up the video to Google Photos or iCloud . VID-20190924-WA0030mp4
: Use the VLC Media Player , which can play almost any .mp4 file even if it's slightly damaged. : If you have chat backups enabled, you