Cmake: Cmake ffmpeg library fix for Windows

CMakeLists.txt

@@ -16,11 +16,22 @@ add_library(obs-moq MODULE)
 if(${BUILD_PLUGIN})
   find_package(libobs REQUIRED)
   # FFmpeg dependency
-  include(FindPkgConfig)
-  pkg_check_modules(FFMPEG REQUIRED libavcodec libavutil libswscale libswresample)
-  target_include_directories(obs-moq PRIVATE ${FFMPEG_INCLUDE_DIRS})
-  target_link_directories(obs-moq PRIVATE ${FFMPEG_LIBRARY_DIRS})
-  target_link_libraries(obs-moq PRIVATE ${FFMPEG_LIBRARIES})
+  if(NOT OS_WINDOWS)
+    pkg_check_modules(FFMPEG REQUIRED libavcodec libavutil libswscale libswresample)
+    target_include_directories(obs-moq PRIVATE ${FFMPEG_INCLUDE_DIRS})
+    target_link_directories(obs-moq PRIVATE ${FFMPEG_LIBRARY_DIRS})
+    target_link_libraries(obs-moq PRIVATE ${FFMPEG_LIBRARIES})
+  else()
+    target_link_libraries(obs-moq PRIVATE Userenv ntdll)
+
+    find_library(AVCODEC_LIB avcodec)
+    find_library(AVUTIL_LIB avutil)
+    find_library(SWSCALE_LIB swscale)
+    find_library(SWRESAMPLE_LIB swresample)
+
+    target_link_libraries(obs-moq PRIVATE ${AVCODEC_LIB} ${AVUTIL_LIB} ${SWSCALE_LIB} ${SWRESAMPLE_LIB})
+
+  endif()
 else()
   find_package(FFmpeg REQUIRED avcodec avutil swscale swresample)
   target_link_libraries(obs-moq PRIVATE FFmpeg::avcodec FFmpeg::avutil FFmpeg::swscale FFmpeg::swresample)

WINDOWS.md

@@ -0,0 +1,37 @@
+## Windows Build Instructions
+
+### Build Setup
+
+``
+Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1'))
+ choco install -y git 
+ choco install -y cmake --installargs 'ADD_CMAKE_TO_PATH=System'
+ choco install visualstudio2026buildtools --package-parameters "--add Microsoft.VisualStudio.Workload.VCTools --includeRecommended"
+ choco install rustup
+```
+
+During the rustup installation choose the `nightly` variant.
+
+Locate "Visual Studio Installer". Click "Modify". Choose "Desktop Development with C++". Check C++ ATL For x64
+
+
+### Build the OBS fork
+```
+cd obs-studio
+cmake -G "Visual Studio 18 2026" -A x64 --preset windows-x64
+cmake --build --preset windows-x64
+```
+
+### Build the obs-moq plugin
+
+```
+cd obs
+cmake -G "Visual Studio 18 2026" -A x64 --preset windows-x64
+cmake --build --preset windows-x64
+```
+
+For now copy the build plugin libraries to the build obs fork
+
+```
+Copy-Item -Path "build_x64/rundir/RelWithDebInfo/" -Destination "../obs-studio/build_x64/rundir/RelWithDebInfo/obs-plugins" -Recurse
+```

buildspec.json

@@ -1,21 +1,21 @@
 {
     "dependencies": {
         "obs-studio": {
-            "version": "31.1.1",
+            "version": "32.1.2",
             "baseUrl": "https://github.com/obsproject/obs-studio/archive/refs/tags",
             "label": "OBS sources",
             "hashes": {
-                "macos": "39751f067bacc13d44b116c5138491b5f1391f91516d3d590d874edd21292291",
-                "windows-x64": "2c8427c10b55ac6d68008df2e9a3e82f4647aaad18f105e30d4713c2de678ccf"
+                "macos": "2aeb3aaa99544fefd557f10ac6550e73df71540dd57528b2a1e6f39a55ebacfb",
+                "windows-x64": "21cba22292985cf0da967d5c618999b40eaa32b73d2ab8b06154b5ea1b3d3798"
             }
         },
         "prebuilt": {
-            "version": "2025-07-11",
+            "version": "2025-08-23",
             "baseUrl": "https://github.com/obsproject/obs-deps/releases/download",
             "label": "Pre-Built obs-deps",
             "hashes": {
-                "macos": "495687e63383d1a287684b6e2e9bfe246bb8f156fe265926afb1a325af1edd2a",
-                "windows-x64": "c8c642c1070dc31ce9a0f1e4cef5bb992f4bff4882255788b5da12129e85caa7"
+                "macos": "9403bb43fb0a9bb215739a5659ca274fe884dbbbcd22bd9ca781c961fb041c42",
+                "windows-x64": "8de229cff6f1981508c0eb646b35e644633a5855787b9f5d3b90ae2aeb87ffc1"
             }
         },
         "qt6": {