obs-studio: cherry-pick a bunch of build fixes, remove extremely misleadingly named argument

pkgs/applications/video/obs-studio/default.nix

@@ -2,10 +2,11 @@
 , lib
 , stdenv
 , fetchFromGitHub
+, fetchpatch
 , addOpenGLRunpath
 , cmake
 , fdk_aac
-, ffmpeg_4
+, ffmpeg
 , jansson
 , libjack2
 , libxkbcommon
@@ -70,6 +71,29 @@ stdenv.mkDerivation rec {
     # Lets obs-browser build against CEF 90.1.0+
     ./Enable-file-access-and-universal-access-for-file-URL.patch
     ./fix-nix-plugin-path.patch
+
+    # Backport ffmpeg 6.1 / GCC 13 build fixes
+    # FIXME: remove in next release
+    (fetchpatch {
+      url = "https://github.com/obsproject/obs-studio/commit/cd784644f5e82b9988043f229c19603289c6d32c.patch";
+      hash = "sha256-S4JE5kgr4x3uMHY2GRh0GBJpb7o/wYZb/v0CDITFNnQ=";
+    })
+    (fetchpatch {
+      url = "https://github.com/obsproject/obs-studio/commit/758b47d4ed9a25b8d64ad481d8d039990b9e57c9.patch";
+      hash = "sha256-jYpjwhx6e+dhN3kzbd6FcdjQ+WhIX0/BOu9PSkt+2yI=";
+    })
+    (fetchpatch {
+      url = "https://github.com/obsproject/obs-studio/commit/4b5be75c7e4b8cee908ed4a02fe0078285b4e8c9.patch";
+      hash = "sha256-tuOevhyxchwG42ilrplbiWoiDAKaY4HgzShlvp4VSQI=";
+    })
+    (fetchpatch {
+      url = "https://github.com/obsproject/obs-studio/commit/6e080a68067b27fe5463f0f4eee7df690451f3d7.patch";
+      hash = "sha256-nbn/q3uszoHaDvaW8Et1MS1sgQzMsJRmjGSMHzUxV70=";
+    })
+    (fetchpatch {
+      url = "https://github.com/obsproject/obs-studio/commit/df70743385965f979f922e05af9a249f20f94869.patch";
+      hash = "sha256-uIBsFuggz8SgQsQ0Ry2lvSPeMm63lgVe7oFx/3aT12k=";
+    })
   ];
 
   nativeBuildInputs = [
@@ -84,7 +108,7 @@ stdenv.mkDerivation rec {
   buildInputs = [
     curl
     fdk_aac
-    ffmpeg_4
+    ffmpeg
     jansson
     libcef
     libjack2

pkgs/top-level/all-packages.nix

@@ -34385,7 +34385,7 @@ with pkgs;
   obs-cli = callPackage ../applications/misc/obs-cli { };
 
   obs-studio = qt6Packages.callPackage ../applications/video/obs-studio {
-    ffmpeg_4 = ffmpeg-full;
+    ffmpeg = ffmpeg-full;
   };
 
   obs-studio-plugins = recurseIntoAttrs (callPackage ../applications/video/obs-studio/plugins {});