Read this guide:
https://forum.videolan.org/viewtopic.php?f=2&t=156428
If it doesn't help then open Tools -> Messages (set Verbosity to 2)
before you start the playback, and then paste the
full resulting log here or on Pastebin.com or on Justpaste.it if it's too long.
Also upload a
short sample of your
original problematic file to WeTransfer.com or Disroot.org and then post the link to the file here.
https://wetransfer.com
https://upload.disroot.org