{telegram-desktop,kotatogram-desktop}.tg_owt: add patch for FFmpeg 7

These are forks of WebRTC, so include the same upstream patch we use
for FFmpeg 7 support in Qt 5’s WebEngine.

I didn’t bother deduplicating it across these two copy‐pasted
expressions since the original authors didn’t either.

pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.nix

@@ -1,6 +1,7 @@
 { lib
 , stdenv
 , fetchFromGitHub
+, fetchpatch2
 , pkg-config
 , cmake
 , ninja
@@ -42,6 +43,18 @@ stdenv.mkDerivation {
     fetchSubmodules = true;
   };
 
+  patches = [
+    # Remove usage of AVCodecContext::reordered_opaque
+    (fetchpatch2 {
+      name = "webrtc-ffmpeg-7.patch";
+      url = "https://webrtc.googlesource.com/src/+/e7d10047096880feb5e9846375f2da54aef91202%5E%21/?format=TEXT";
+      decode = "base64 -d";
+      stripLen = 1;
+      extraPrefix = "src/";
+      hash = "sha256-EdwHeVko8uDsP5GTw2ryWiQgRVCAdPc1me6hySdiwMU=";
+    })
+  ];
+
   postPatch = lib.optionalString stdenv.isLinux ''
     substituteInPlace src/modules/desktop_capture/linux/wayland/egl_dmabuf.cc \
       --replace '"libEGL.so.1"' '"${libGL}/lib/libEGL.so.1"' \

pkgs/applications/networking/instant-messengers/telegram/telegram-desktop/tg_owt.nix

@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchFromGitHub,
+  fetchpatch2,
   pkg-config,
   cmake,
   crc32c,
@@ -41,6 +42,18 @@ stdenv.mkDerivation {
     fetchSubmodules = true;
   };
 
+  patches = [
+    # Remove usage of AVCodecContext::reordered_opaque
+    (fetchpatch2 {
+      name = "webrtc-ffmpeg-7.patch";
+      url = "https://webrtc.googlesource.com/src/+/e7d10047096880feb5e9846375f2da54aef91202%5E%21/?format=TEXT";
+      decode = "base64 -d";
+      stripLen = 1;
+      extraPrefix = "src/";
+      hash = "sha256-EdwHeVko8uDsP5GTw2ryWiQgRVCAdPc1me6hySdiwMU=";
+    })
+  ];
+
   outputs = [
     "out"
     "dev"