* Version difference or viewer absence – The recipient has neither PowerPoint 2003/2007 installed, nor is he/she bothered to install a viewer for the source PowerPoint program. * Cross-platform incompatibility – Your presentation was made on a Windows operating system while he/she uses a Mac.Another problem is, you don’t want your PowerPoint stuff to be modified by others, simply to show it in    .. more …

3GP is a streaming media video encoding formats based MPEG4, It is developed to be used mostly in mobile phones through the 3G network with high-speed transmission, so it is the most common video formats in mobile phone based GSM. 3GP files are viewable on a PC using QuickTime or RealPlayer. By converting PPTto 3GP video , you can view PPT stuff on your 3G cell phone without broadband connection.    .. more …

About WMV
WMV, short for Windows Media Video, is a compressed video file format for several proprietary codecs developed by Microsoft. It was originally designed for Internet streaming applications as a competitor to RealVideo. Through standardization from the Society of Motion Picture and Television Engineers (SMPTE), WMV has gained adoption for physical-delivery formats such as HD DVD and    .. more …