iOrgsoft Video Converter is a competent program with simple to use interface to convert almost all video, audio and movie files like AVCHD, M2TS, MOD, AVI, MP4, WMV, 3GP, MOV, VOB, MPG, ASF, RM, RMVB, FLV (YouTube video) for Windows users, trim and merge files, transfer videos to devices like iPhone, iPod, Blackberry and mobile phones, extract audio from video and save frames as pictures, fast conversion speed and excellent audio-visual quality
File Extension .FLV
Flash-compatible video file exported by the Flash Video Exporter plug-in (included with Adobe Flash) or other program with FLV file support; consists of a short header, interleaved audio, video, and metadata packets; audio and video data is stored in a similar format used by standard Flash (.SWF) files.
Video file formats compatible with PowerPoint 2010
Unfortunately, FLV is not on the list, if you really dig that video in flv format and want it to beam in your presentation, you will have to convert it from flv to formats compatible with PowerPoint 2010, such as WMV, AVI, ASF. before you can embed flv into powerpoint 2010
Here's a step by step guide about how to convert and embed FLV video into PowerPoint.
First download FLV to PowerPoint 2010 video converter
Import FLV videos, FLV to PowerPoint 2010 video converter supports batch conversion between a wide range of video formats
Set output formats, for PowerPoint presentation, WMV, ASF, AVI are all accepted.
Click start to convert and embed FLV video into PowerPoint.