If you are looking for software to download videos from the web, several "MP4 Downloader" apps exist, particularly on Android. Download a file - Android - Google Chrome Help
If "KOJ" refers to the iconic film , downloading it for offline viewing should be done through official, safe channels. Download koj mp4
You can use "Coojis" (Koji templates) to upload MP4 files and set a price for your audience to purchase and download. 2. Legal Streaming & Movies ("KOJ" / KKHH) If you are looking for software to download