just convert it to powerpoint compatible format the following is a step by step guide
Step 1 Run PowerPoint Video Converter-Bigasoft Total Video Converter
Free download Bigasoft Total Video Converter-the professional PowerPoint Video Converter, install and run it.
Windows version of Bigasoft Total Video Converter at http://www.bigasoft.com/total-video-converter.html
Mac version of Bigasoft Total Video Converter at http://www.bigasoft.com/total-video-converter-mac.html
Bigasoft Total Video Converter, the professional PowerPoint Video Converter, can fast convert various video files including Xvid, DivX, H.264, MP4, 3GP, MKV, RM, FLV, MOV, SWF, WebM, VP8, MOD, TOD, M2TS, etc to PowerPoint compatible video format like AVI, ASF, MPEG, WMV.
Step 2 Insert video to PowerPoint Video Converter
Put video in PowerPoint Video Converter by clicking the "Add File" button and then click "Open".
Step 3 Select PowerPoint compatible video format
From the "Profile" drop-down list, select the most appropriate profile MPEG-1 Video (*.mpg) from the "General Video" category, which is fully compatible with Microsoft PowerPoint Presentation.
Tips:
Though ASF, AVI, and WMV are also compatible with PowerPoint, MPEG is more preferable. For this video file can be played on both PC and Mac, while others can only be played on PC.
Step 4 Finish to convert video to PowerPoint video format
Click the "Start" button to finish converting video file to Microsoft PowerPoint Presentation supported video format.
Step 6 Embed video to PowerPoint
For PowerPoint 2007:
Click Insert and Movie and then browse your target folder to embed the converted video.
For PowerPoint2003:
On the Insert menu, point to Movies and Sounds, and then click Movie from File.
Tip:
Always put the YouTube video in the same folder as your PowerPoint presentation on your computer. If you later send the PowerPoint presentation to other person, send the YouTube video too. Keeping the YouTube video in the same folder as the presentation ensures the link will still work on other computers. Re-insert the video, if necessary.