Besides working as a powerful Video/Audio Converter and Downloader, iDealshare VideoGo is also a professional Video Watermarker which helps to add watermark to video of any format. Key Features: Add watermark to AVI, MP4, MOV, WMV, MKV, FLV, VOB, ASF, AVCHD, MTS, MXF, MOD, TOD, 3GP, SWF, MPEG-1, MPEG-2, DV, and etc Add text watermark to movies files Add image or picture watermark to video like adding JPG, PNG, JPEG, BMP, GIF, TIFF and etc to videos. Batch watermark video files as well as keep the same output video format or convert to other video formats. Add and edit the font, color, size, position and transparency of the text watermark Add and edit the size, placement and transparency of the image watermark Download as well as watermark YouTube videos like FLV, WebM, MP4 and etc. Video Watermarker Mac version is compatible with Mac OS X v10.4 (Tiger), 10.5(Leopard), 10.6(Snow Leopard), 10.7(Lion), 10.8(Mountain Lion), 10.9 (Mavericks). Video Watermarker Windows version can work on Windows 8, Windows 7, Windows XP, Windows Vista, and Windows 2000.