diff --git a/pkgs/applications/video/srtrelay/default.nix b/pkgs/applications/video/srtrelay/default.nix
new file mode 100644
index 00000000000..5fffdca9e38
--- /dev/null
+++ b/pkgs/applications/video/srtrelay/default.nix
@@ -0,0 +1,25 @@
+{ lib, buildGoModule, fetchFromGitHub, srt, ffmpeg }:
+
+buildGoModule rec {
+  pname = "srtrelay-unstable";
+  version = "2021-07-28";
+
+  src = fetchFromGitHub {
+    owner = "voc";
+    repo = "srtrelay";
+    rev = "c4f02ff2e9637b01a0679b29e5a76f4521eeeef3";
+    sha256 = "06zbl97bjjyv51zp27qk37ffpbh1ylm9bsr0s5qlyd73pyavcj1g";
+  };
+
+  vendorSha256 = "1pdpb0my7gdvjjkka6jhj19b9nx575k6117hg536b106ij2n4zd2";
+
+  buildInputs = [ srt ];
+  checkInputs = [ ffmpeg ];
+
+  meta = with lib; {
+    description = "Streaming-Relay for the SRT-protocol";
+    homepage = "https://github.com/voc/srtrelay";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fpletz ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 22529d60400..55a56bd4970 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9048,6 +9048,8 @@ in
 
   srt-to-vtt-cl = callPackage ../tools/cd-dvd/srt-to-vtt-cl { };
 
+  srtrelay = callPackage ../applications/video/srtrelay { };
+
   sourcehut = callPackage ../applications/version-management/sourcehut { };
 
   sshfs-fuse = callPackage ../tools/filesystems/sshfs-fuse { };