I did nothing,just

1. support .net framework 4
2. support open media with utf8 filename

===ffmediaelement:

https://github.com/unosquare/ffmediaelement

===ffmpeg(support xp sp2):

https://github.com/Reino17/ffmpeg-windows-build-helpers

https://rwijnsma.home.xs4all.nl/files/ffmpeg/