FFmpeg: Only load versioned libraries on Linux

osu.Framework/Graphics/Video/VideoDecoder.cs

@@ -114,12 +114,18 @@ static VideoDecoder()
         {
             if (RuntimeInfo.OS == RuntimeInfo.Platform.Linux)
             {
+                void loadVersionedLibraryGlobally(string name)
+                {
+                    int version = FFmpeg.AutoGen.ffmpeg.LibraryVersionMap[name];
+                    Library.Load($"lib{name}.so.{version}", Library.LoadFlags.RTLD_LAZY | Library.LoadFlags.RTLD_GLOBAL);
+                }
+
                 // FFmpeg.AutoGen doesn't load libraries as RTLD_GLOBAL, so we must load them ourselves to fix inter-library dependencies
                 // otherwise they would fallback to the system-installed libraries that can differ in version installed.
-                Library.Load("libavutil.so", Library.LoadFlags.RTLD_LAZY | Library.LoadFlags.RTLD_GLOBAL);
-                Library.Load("libavcodec.so", Library.LoadFlags.RTLD_LAZY | Library.LoadFlags.RTLD_GLOBAL);
-                Library.Load("libavformat.so", Library.LoadFlags.RTLD_LAZY | Library.LoadFlags.RTLD_GLOBAL);
-                Library.Load("libswscale.so", Library.LoadFlags.RTLD_LAZY | Library.LoadFlags.RTLD_GLOBAL);
+                loadVersionedLibraryGlobally("avutil");
+                loadVersionedLibraryGlobally("avcodec");
+                loadVersionedLibraryGlobally("avformat");
+                loadVersionedLibraryGlobally("swscale");
             }
         }
 
@@ -808,9 +814,9 @@ protected virtual FFmpegFuncs CreateFuncs()
             {
                 int version = FFmpeg.AutoGen.ffmpeg.LibraryVersionMap[name];
 
+                // "lib" prefix and extensions are resolved by .net core
                 string libraryName;
 
-                // "lib" prefix and extensions are resolved by .net core
                 switch (RuntimeInfo.OS)
                 {
                     case RuntimeInfo.Platform.macOS:
@@ -821,8 +827,11 @@ protected virtual FFmpegFuncs CreateFuncs()
                         libraryName = $"{name}-{version}";
                         break;
 
+                    // To handle versioning in Linux, we have to specify the entire file name
+                    // because Linux uses a version suffix after the file extension (e.g. libavutil.so.56)
+                    // More info: https://learn.microsoft.com/en-us/dotnet/standard/native-interop/native-library-loading?view=net-6.0
                     case RuntimeInfo.Platform.Linux:
-                        libraryName = name;
+                        libraryName = $"lib{name}.so.{version}";
                         break;
 
                     default: