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Online presentation sharing website authorSTREAM has announced an upgrade to their PowerPoint to video conversion engine. authorSTREAM lets you convert your PowerPoint presentations in WMV, AVI, FLV and MP4 video formats. Once converted videos users can send share them on YouTube via send to YouTube option or download on desktop to burn on DVD.

Prior to PowerPoint 2010, authorSTREAM was the only online option for converting PowerPoint presentations in video format. authorSTREAMs PowerPoint to video engine now supports embedded videos and slide transition effects.

Here is the comparison put up by authorSTREAM between PowerPoint to video capabilities of authorSTREAM and PowerPoint 2010:

Features	authorSTREAM	PowerPoint 2010
PowerPoint to Video conversion support	Supports video conversion for most PowerPoint versions (2002(XP)/2003/2007/2010)	Supports video conversion only in PowerPoint 2010
Audio support in video conversions, created out of any PowerPoint presentation version	Yes	Audio compatibility issues are more often
Playing sound across selected slides	Yes	Yes, but when more than 1 audio file is inserted in a presentation and selected for specific slides, audio overlapping problems crop up
Transition sound effect	Yes	No
Preference to rehearse timings set for each slide (in case when slide contains some media)	Yes	No
Video formats support	AVI, FLV, MP4 and WMV	WMV video format only
Share presentation videos on YouTube	Send directly to YouTube (no need to download)	Upload manually