How to play videos in widescreen or 16:9 format in Windows Media Player?

1] Play your video file.
2] Click on the Notification area in the taskbar.
3] Double click on your video decoder, for example ffdshow video decoder.




4] Select Resize & Aspect option > Select Resize to screen resolution and also select No aspect ratio correction under Aspect ratio column.




5] Finally click Apply button to save the changes and OK button to exit.
6] Now Windows Media Player