Dr.Player 2.1.0

Do not install 2.1.0. Use 2.1.1.
2.1.0 overwrote another program's fallback file association and kept no copy, so uninstalling it afterwards left four file types resolving to a program that no longer existed. The release notes below also described the failed-decode behaviour incorrectly; that is corrected in 2.1.1. If you already installed 2.1.0, install 2.1.1 over it rather than uninstalling first.

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Windows, as before: the installer installs into your own user profile and needs no administrator rights.

This release changes the installer and the documentation only. No application code changed, so 2.0.0 and 2.1.0 play video identically.

If you are on 1.0.0, launch it with a video first: the update chip in the top bar will offer you this release.

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Dr.Player v2.1.0

File Associations

• Dr.Player now appears in the Open with list for .mp4, .m4v, .mov and .webm, so a video opens
  the way a video opens: double-click it, or pick Dr.Player from an Open with menu, and it plays.
  Four types and no more, because those are the ones the embedded engine decodes with no bundled
  codec. A type it cannot decode does not fail politely: the window comes up titled "Error loading
  video" and has to be closed from Task Manager, which is why .avi, .wmv, .flv, .mpeg and .ogv
  are absent rather than merely untested
• The registration goes under HKCU\Software\Classes, per user and with no administrator rights,
  which is the only scope an unelevated installer can honestly claim. One version-independent
  ProgID, Dr.Player.Video, sits behind all four, so a later release re-registers the same name and
  a user who has already chosen Dr.Player keeps a working handler instead of losing one to a
  handler that appeared and disappeared
• The installer will not make itself the default and does not claim to. Windows keeps that choice
  in Explorer\FileExts<ext>\UserChoice, which is obfuscated, hash-protected and blocked from
  writes by a filter driver, so no installer may take a file type away from the program someone
  already uses. Dr.Player sets AllowSilentDefaultTakeOver instead, which is Microsoft's way of
  saying the same thing from the other end: stay in the list, keep out of the decision. Somebody
  who already had another video player keeps it and simply gains Dr.Player beside it
• Becoming the default is one choice, made once, in Windows' own UI: Settings > Default apps, or
  right-click a video, Open with, Choose another app, then dr-player.exe. The finish page offers
  to open that screen, unchecked, and Windows 10 opens the plain page where Windows 11 opens
  Dr.Player's own
• Uninstalling takes back exactly what was added: the ProgID key and the application key, whole and
  recursively, so nothing is left pointing at an exe that is gone, plus Dr.Player's own value in
  each of the four OpenWithProgids lists and under RegisteredApplications. The per-extension
  default value is deliberately left in place, because Microsoft's guidance is not to remove a
  value another program may have taken over since

Installer

• The how-to text file is gone, with the Start Menu and desktop shortcuts that pointed at it and
  the finish-page checkbox that opened it. Nothing shipped tells you to run a command line any
  more, because nothing shipped needs one: the app still takes exactly one argument, and the
  association supplies it
• The optional desktop-shortcut section went with it. It existed only to shortcut to that text
• The finish page now says where the app installed and that it is in the Open with list, and offers
  to open Default Apps rather than to start the app. The app exits with code 2 when started with
  no argument, which is why there has never been a shortcut to the exe and still is not one