Protection of video and PDF files against unauthorized viewing and illegal distribution. (Mobile phone supported!)/ Multi-platform: The encrypted files could be used on Android, iOS, Mac, and Windows. File Formats: Audio, video, and PDF files are supported. High-level Encryption: With 256-bit AES encryption and an advanced video encoding algorithm, more secure and reliable! Prevent Screen Recording and Screenshots: Automatically identify various known and unknown screen recorder software. If users try taking screenshots, they could only get a black screen picture. License Control: Before users can play the video, they must enter the correct authorized account and password; The vendor could set an expiration date and licensed course for each user. Device Binding: After users enter the username and password to log in player, the account was binding to the device. Users could no longer log in to another device without their permission. Watermark: Set different text watermark for each user. Watermark text consists of the student’s name or other personal information. Static watermark and floating watermark are supported. Protect the content: Built-in copy protection helps prevent people from copy-and-pasting the content of your file. SafeDRM is designed to protect audio, video, and PDF files intended for playback on PC and mobile phone against copying, illegal distribution, and unauthorized use. The program uses high-strength encryption algorithms to protect audio, video files, and PDF files. These files can be played on multiple platforms, such as Android, iOS, Mac, and Windows.