If the file is missing but you still have the chat, try re-downloading it from the original WhatsApp conversation from June 2019.
WhatsApp videos are usually saved directly to your Photos app if "Save to Camera Roll" was turned on in 2019.
The filename is a standard format used by WhatsApp to name video files saved to your device. It indicates the video was received or recorded on June 3, 2019 .
If you have backup enabled, search your gallery for the date June 3, 2019 . 🛠️ Common "Guide" requests for this file type
Open your File Manager app and navigate to: Internal Storage > WhatsApp > Media > WhatsApp Video
💡 For example: Are you trying to recover a deleted video?