: Check if your device automatically backed up the video to Google Photos or iCloud .
Since the filename contains a date, you can narrow down what it might be by checking your digital history from : VID-20190924-WA0030mp4
: Open WhatsApp and search for "September 24, 2019" in your chats. This will show you who sent the video and the context of the conversation. : Check if your device automatically backed up
: If you use WhatsApp Web or the Desktop app, check your browser's "Downloads" folder. 3. Fixing Playback Issues VID-20190924-WA0030mp4