MediaPlayer cant play the uri startswith `pack://...`

• .NET Core Version: 6.0.2
• Windows version: win11
• Does the bug reproduce also in WPF for .NET Framework 4.8?: Dont know
• Is this bug related specifically to tooling in Visual Studio (e.g. XAML Designer, Code editing, etc…)? NO
• Security issues and bugs should be reported privately, learn more via our responsible disclosure guidelines.

Problem description:

MediaPlayer cant play the uri startswith pack://.... such as

// play failed
string uriString1 = $"pack://application:,,,/Lyre.Player.Plugin;component/Resources/FloralZither.mp3";
MediaPlayer player1 = new();
player1.Open(new Uri(uriString1));
player1.Play();

// play ok
string uriString2 = @$"D:\GitHub\Snap.Genshin\Plugins\SG.Plugin.Lyre.Player\src\Resources\FloralZither.mp3";
MediaPlayer player2 = new();
player2.Open(new Uri(uriString2));
player2.Play();

Actual behavior: UriSchemePack type uri cant be played using MediaPlayer.

Expected behavior:

Minimal repro:

[ThomasGoulet73]

You were faster than me 😄. Here’s the code that throws when using pack for reference: https://github.com/dotnet/wpf/blob/4af440108d50958a2ac3e3f67a454aa0cd142e5c/src/Microsoft.DotNet.Wpf/src/PresentationCore/System/Windows/Media/MediaPlayerState.cs#L844-L855

Does MediaPlayer intend to append the API that passes the Stream parameter for opening file? This repo is probably not the right place to ask this question since Windows Media Player is probably maintained by the Windows team. I would recommend using third-party solutions which might support using a Stream (VLC based player might support it).

[emako]

Try VLC or extract the file from the assembly to fix problem.