I am hoping there 's a simple solution to this - I couldn't find it over several hours..
Recently upgraded from Windows 7 Home Premium (64-bit) to Windows 10 -
but had to downgrade back to Window 7 because I could not solve this problem.
Problem: I immediately noticed playback issues of regular MP4 videos either directly from my camera or ones that I had processed using Windows Movie Maker 2012 (under Windows 7) - this was using the default Windows 10 player - Movies & TV app. However there was no such problems under Windows 10 using either Media Player Classic or even Windows Media Player.
Then when I tried to process a video using Movie Maker 2012 (under Windows 10) - I saw the same issue in the preview -
BUT the processed results had the same issues.
None of these problems existed under Windows 7
Here's a video that hopefully will help illustrate the issue -
Windows 10 Video Problem - in Movies & TV app and Windows Movie Maker 2012 HD
link: https://youtu.be/u9yDb3UUruY
I tried clean uninstall and re-installing Windows Movie Maker 2012 - using the web install directly from Microsoft - that made no difference.
Thought perhaps Movie Maker was using the default player as its engine to render videos - so uninstalled the Movies & TV app - made no difference.
Made sure I had the latest codecs installed (K-Lite Mega pack - had been using this under Windows 7 for years without problems).
Because I really needed to process my videos - I downgraded back to Windows 7 - and then processed exactly the same video using exactly the same Movie Maker 2012 - no problems as can be seen in the second part of the video.
Really did not expect such a fundamental problem under Windows 10.
Any advice please on what to check/try, please?