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I have a short mp4 embedded in a PowerPoint presentation. It's set to loop indefinitely and start when the slide comes up, but the video doesn't show. If I mouse over the progress bar, it shows it repeating in a loop, but the window is black. If I click somewhere on the progress bar, it plays through once, then the bar loops again with the video stuck on the last frame of video. What's wrong and how can I fix it?

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Colin Zheng, ex-MS engineer, wrote a pretty good blog article on this matter. You can find it here.

The TL;DR of the article:

Apparently, Powerpoint doesn't use a fully-fledged media player, but a stripped down version of WMP 6 (yeah, you read that right). So any advanced technologies may not be compatible with it. You have three options:

Option 1: Convert videos to .wmv and disable Hardware Acceleration

Option 2: Convert videos to .mpg using QuicktimePro

Option 3: Embed the real Windows Media Player

But that still doesn't explain why cutting the first and last microseconds of you video works though...

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I'm not sure WHY this works, but editing the start/stop times to be a couple ms from the ends seems to resolve the issue.

  • MS's official advice is to use the Powerpoint viewer. Thanks for nothing Microsoft. – PieBie Apr 2 '15 at 14:44
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Power point doesn't supprt mp4 video file. You have to convert it to wmv. You can convert it online also, it's free. You can check it on google.

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