You can safely download the original TrueType Font file from trusted community repositories. Always scan downloaded files with antivirus software before installation.
Mobile operating systems like Android and iOS primarily rely on modern Unicode structures for system-wide display text. While you cannot change your entire phone system font to DVB-TTDhruv easily, specific mobile video editing and graphic applications (like PicsArt, InShot, or PixelLab) allow you to manually upload custom .ttf files to add stylized Marathi text directly over your multimedia assets.