: Since it is labeled as 4K , the extracted MP4 should be quite large (likely several gigabytes). If the file is only a few megabytes, it may be a fake or corrupted file.
: Use a tool like 7-Zip , WinRAR , or the built-in "Extract All" feature on Windows/macOS to unzip the file. Merilyn PVC Nurse 4K.mp4.zip
: For 4K MP4 playback, use a versatile player like VLC Media Player or MPC-HC to ensure you have the necessary codecs for high-resolution video. : Since it is labeled as 4K ,