How to run this cross platform application on macOS ARM M1 MAX?

[DanielOberlechner]

Hi,
I saw today that the application now is cross platform. First I downloaded it and wanted to start the YoutubeDownloader Unix file but that did not work.
Then I got the idea to start it like:
dotnet YoutubeDownloader.dll

but when I do that I get the following error:

Unhandled exception. System.TypeInitializationException: The type initializer for 'SkiaSharp.SKImageInfo' threw an exception.
 ---> System.DllNotFoundException: Unable to load shared library 'libSkiaSharp' or one of its dependencies. In order to help diagnose loading problems, consider setting the DYLD_PRINT_LIBRARIES environment variable: 
dlopen(/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/libSkiaSharp.dylib, 0x0001): tried: '/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/libSkiaSharp.dylib' (code signature in <EB148767-9568-3FEB-A66A-7618356E1722> '/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/libSkiaSharp.dylib' not valid for use in process: library load disallowed by system policy), '/System/Volumes/Preboot/Cryptexes/OS/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/libSkiaSharp.dylib' (no such file), '/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/libSkiaSharp.dylib' (code signature in <EB148767-9568-3FEB-A66A-7618356E1722> '/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/libSkiaSharp.dylib' not valid for use in process: library load disallowed by system policy)
dlopen(/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/libSkiaSharp.dylib, 0x0001): tried: '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/libSkiaSharp.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/libSkiaSharp.dylib' (no such file), '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/libSkiaSharp.dylib' (no such file)
dlopen(libSkiaSharp.dylib, 0x0001): tried: 'libSkiaSharp.dylib' (code signature in <EB148767-9568-3FEB-A66A-7618356E1722> '/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/libSkiaSharp.dylib' not valid for use in process: library load disallowed by system policy), '/System/Volumes/Preboot/Cryptexes/OSlibSkiaSharp.dylib' (no such file), '/usr/lib/libSkiaSharp.dylib' (no such file, not in dyld cache), 'libSkiaSharp.dylib' (code signature in <EB148767-9568-3FEB-A66A-7618356E1722> '/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/libSkiaSharp.dylib' not valid for use in process: library load disallowed by system policy), '/usr/local/lib/libSkiaSharp.dylib' (no such file), '/usr/lib/libSkiaSharp.dylib' (no such file, not in dyld cache)
dlopen(/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/liblibSkiaSharp.dylib, 0x0001): tried: '/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/liblibSkiaSharp.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/liblibSkiaSharp.dylib' (no such file), '/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/liblibSkiaSharp.dylib' (no such file)
dlopen(/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/liblibSkiaSharp.dylib, 0x0001): tried: '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/liblibSkiaSharp.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/liblibSkiaSharp.dylib' (no such file), '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/liblibSkiaSharp.dylib' (no such file)
dlopen(liblibSkiaSharp.dylib, 0x0001): tried: 'liblibSkiaSharp.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OSliblibSkiaSharp.dylib' (no such file), '/usr/lib/liblibSkiaSharp.dylib' (no such file, not in dyld cache), 'liblibSkiaSharp.dylib' (no such file), '/usr/local/lib/liblibSkiaSharp.dylib' (no such file), '/usr/lib/liblibSkiaSharp.dylib' (no such file, not in dyld cache)
dlopen(/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/libSkiaSharp, 0x0001): tried: '/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/libSkiaSharp' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/libSkiaSharp' (no such file), '/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/libSkiaSharp' (no such file)
dlopen(/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/libSkiaSharp, 0x0001): tried: '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/libSkiaSharp' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/libSkiaSharp' (no such file), '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/libSkiaSharp' (no such file)
dlopen(libSkiaSharp, 0x0001): tried: 'libSkiaSharp' (no such file), '/System/Volumes/Preboot/Cryptexes/OSlibSkiaSharp' (no such file), '/usr/lib/libSkiaSharp' (no such file, not in dyld cache), 'libSkiaSharp' (no such file), '/usr/local/lib/libSkiaSharp' (no such file), '/usr/lib/libSkiaSharp' (no such file, not in dyld cache)
dlopen(/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/liblibSkiaSharp, 0x0001): tried: '/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/liblibSkiaSharp' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/liblibSkiaSharp' (no such file), '/Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/liblibSkiaSharp' (no such file)
dlopen(/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/liblibSkiaSharp, 0x0001): tried: '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/liblibSkiaSharp' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/liblibSkiaSharp' (no such file), '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/8.0.2/liblibSkiaSharp' (no such file)
dlopen(liblibSkiaSharp, 0x0001): tried: 'liblibSkiaSharp' (no such file), '/System/Volumes/Preboot/Cryptexes/OSliblibSkiaSharp' (no such file), '/usr/lib/liblibSkiaSharp' (no such file, not in dyld cache), 'liblibSkiaSharp' (no such file), '/usr/local/lib/liblibSkiaSharp' (no such file), '/usr/lib/liblibSkiaSharp' (no such file, not in dyld cache)

   at SkiaSharp.SkiaApi.sk_colortype_get_default_8888()
   at SkiaSharp.SKImageInfo..cctor()
   --- End of inner exception stack trace ---
   at Avalonia.Skia.PlatformRenderInterface..ctor(Nullable`1 maxResourceBytes)
   at Avalonia.Skia.SkiaPlatform.Initialize(SkiaOptions options)
   at Avalonia.SkiaApplicationExtensions.<>c.<UseSkia>b__0_0()
   at Avalonia.AppBuilder.SetupUnsafe()
   at Avalonia.AppBuilder.Setup()
   at Avalonia.AppBuilder.SetupWithLifetime(IApplicationLifetime lifetime)
   at Avalonia.ClassicDesktopStyleApplicationLifetimeExtensions.StartWithClassicDesktopLifetime(AppBuilder builder, String[] args, Action`1 lifetimeBuilder)
   at YoutubeDownloader.Program.Main(String[] args) in D:\a\YoutubeDownloader\YoutubeDownloader\YoutubeDownloader\Program.cs:line 30
zsh: abort      dotnet YoutubeDownloader.dll

I've installed dotnet 6.0.1 && 8.0.2 ...

Kind regards,
Daniel

[Tyrrrz]

Hi!

I looked around for this issue and found someone suggested installing libfontconfig1, with the following command:

$ apt-get update && apt-get install -y libfontconfig1

I'm not sure what's the equivalent of that package on MacOS/Brew. Maybe that could help?

[DanielOberlechner]

I found the issue.
When opening the program it tells you ca x8-9 times if you want to open this software because macOS can't find malware in this software.
If you only click OK nothing happens.
You habe to click ok once, then got to Security on macOS settings and click "Allow".

And this procedure you'll have to do about 8x-9 times.

Also when you've done that and download a video once again such a popup comes for ffmpeg which is per standard not allowed and you'll have to go again to Security and allow it.

Now it is working just fine.

But on Linux on ARM I get the following error:

Maybe this is because I used the ARM macOS download because there is no Linux ARM download? Should there be also a Linux ARM release be added?

Thank you for answering
kind regards,
Daniel

[Tyrrrz]

I'm glad you were able to solve it. Can you take a screenshot of the app running on macOS for my personal curiosity? I was never able to test it myself because I don't have a mac 😛

Yeah, currently only x64 is supported for Linux. The reason is that I'm only able to produce Linux builds of FFmpeg for that specific architecture. I use vcpkg and I was unable to build for x86 or arm64, but maybe I was doing something wrong: Tyrrrz/FFmpegBin#1 (failed job: https://github.com/Tyrrrz/FFmpegBin/actions/runs/8885510196/job/24397026444)

You can use your own build of FFmpeg, but you'd currently have to build the project for linux-arm64 manually by installing .NET 8.0 SDK, cloning the repo, and running dotnet publish -r linux-arm64.

[Tyrrrz]

It seems that for it to work on macOS seamlessly, some hefty extra legwork is involved: https://docs.avaloniaui.net/docs/deployment/macOS

[Tyrrrz]

Note that a linux-arm64 build is now also available, but it's only provided without FFmpeg

[DanielOberlechner]

It looks like this on macOS like a native application:

Maybe it would make sense to write a short instruction for people who aren't familiar with dotnet on how to start the application and that this is not a normal app in case of macOS. I suppose not everyone nows how to start this application.

If you need anything just let me know.

Daniel

[Tyrrrz]

Thanks! Just to clarify, after adding the Gatekeeper exception, were you able to run the app by double-clicking YoutubeDownloader or did you have to do dotnet YoutubeDownloader.dll still?

[DanielOberlechner]

Sadly I had to run it with dotnet YoutubeDownloader.dll still ...
If I double click the application I get:

danieloberlechner@Macbook ~ % /Users/danieloberlechner/Downloads/YoutubeDownloader.osx-arm64/YoutubeDownloader
zsh: killed     

[Tyrrrz]

FYI, newly released builds come within .app bundles for macOS but you still need to run a terminal command to work around trust issues (see readme)

https://github.com/Tyrrrz/YoutubeDownloader#download

[DanielOberlechner]

FYI, newly released builds come within .app bundles for macOS but you still need to run a terminal command to work around trust issues (see readme)

https://github.com/Tyrrrz/YoutubeDownloader#download

This works now as default app experience like usually on macos.
In my opinion its a bit cringe, that we have to do this:
xattr -rd com.apple.quarantine YoutubeDownloader.app

I think there should exist a way to patch this behavior. I use tons of apps which don't come from the appstore and where I don't have to do this extra step.

First I tried to launch it without this manual terminal command and I got the error this application is damaged and doesn't work. Move to bin.

By the way I'm using macOS 26.

And a small tip:
You call it in the download section os x. os x was the old name, now everything is named like this schema:
iOS
macOS
watchOS
...

maybe you want to fix that and solve some confusion.

If you need any mac specific help I'm here! :)

By the way I don't know what the application looks like on windows, but on macOS there is this unconfigured:

Here you still could create some options or info about the application with the correct naming instead of avalonia application ...

[Tyrrrz]

I think there should exist a way to patch this behavior. I use tons of apps which don't come from the appstore and where I don't have to do this extra step.

It does exist and it involves signing the app with a certificate. If it were free, I'd do it, but macOS users are a minority so I don't think it's currently worth it.