Video playback issue

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Hello,

I have created a PowerPoint presentation with an inserted MP4 video that plays across the slides. When playing the pptx version, it works perfectly. When I attempted to save the file in MP4 format, the audio of the MP4 plays, but the video does not play. It remains frozen at the beginning of the video portion. Any fixes?



System Configuration: Windows / Chrome 96.0.4664.110