A file size of is exceptionally large for a standard internet video download. For context, a high-definition (1080p) feature-length movie typically ranges between 2 GB and 5 GB. A 11 GB file implies either an ultra-high-definition 4K resolution video or a massive, multi-hour compilation.
Ensure the file ends strictly with .mp4 . If the file is labeled .exe , .zip , or .rar , it could contain malware.
Before opening the file, you can use VirusTotal to scan the download URL or the file itself. It will check the data against dozens of different antivirus engines to ensure it is clean.