diff --git a/pkgs/by-name/bl/blackmagic-desktop-video/package.nix b/pkgs/by-name/bl/blackmagic-desktop-video/package.nix
index 56c7ef7a63ab..96d463d88ad3 100644
--- a/pkgs/by-name/bl/blackmagic-desktop-video/package.nix
+++ b/pkgs/by-name/bl/blackmagic-desktop-video/package.nix
@@ -1,17 +1,20 @@
 {
-  stdenv,
-  cacert,
-  curl,
-  runCommandLocal,
-  lib,
   autoPatchelfHook,
-  libcxx,
-  libGL,
+  cacert,
+  common-updater-scripts,
+  curl,
   gcc,
+  jq,
+  lib,
+  libGL,
+  libcxx,
+  runCommandLocal,
+  stdenv,
+  writeShellApplication,
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "blackmagic-desktop-video";
-  version = "14.4.1a4";
+  version = "14.4.1";
 
   buildInputs = [
     autoPatchelfHook
@@ -23,12 +26,6 @@ stdenv.mkDerivation (finalAttrs: {
   # yes, the below download function is an absolute mess.
   # blame blackmagicdesign.
   src =
-    let
-      # from the URL the download page where you click the "only download" button is at
-      REFERID = "5baba0af3eda41ee9cd0ec7349660d74";
-      # from the URL that the POST happens to, see browser console
-      DOWNLOADID = "bc31044728f146859c6d9e0ccef868d8";
-    in
     runCommandLocal "${finalAttrs.pname}-${lib.versions.majorMinor finalAttrs.version}-src.tar.gz"
       {
         outputHashMode = "recursive";
@@ -37,13 +34,15 @@ stdenv.mkDerivation (finalAttrs: {
 
         impureEnvVars = lib.fetchers.proxyImpureEnvVars;
 
-        nativeBuildInputs = [ curl ];
+        nativeBuildInputs = [
+          curl
+          jq
+        ];
 
         # ENV VARS
         SSL_CERT_FILE = "${cacert}/etc/ssl/certs/ca-bundle.crt";
 
-        inherit REFERID;
-        SITEURL = "https://www.blackmagicdesign.com/api/register/us/download/${DOWNLOADID}";
+        DOWNLOADSURL = "https://www.blackmagicdesign.com/api/support/us/downloads.json";
 
         USERAGENT = builtins.concatStringsSep " " [
           "User-Agent: Mozilla/5.0 (X11; Linux ${stdenv.hostPlatform.linuxArch})"
@@ -58,8 +57,24 @@ stdenv.mkDerivation (finalAttrs: {
           "platform" = "Linux";
           "policy" = true;
         };
+
+        PRODUCT = "Desktop Video";
+        VERSION = finalAttrs.version;
       }
       ''
+        DOWNLOADID=$(
+          curl --silent --compressed "$DOWNLOADSURL" \
+            | jq --raw-output '.downloads[] | .urls.Linux?[]? | select(.downloadTitle | test("^'"$PRODUCT $VERSION"'( Update)?$")) | .downloadId'
+        )
+        REFERID=$(
+          curl --silent --compressed "$DOWNLOADSURL" \
+            | jq --raw-output '.downloads[] | .urls.Linux?[]? | select(.downloadTitle | test("^'"$PRODUCT $VERSION"'( Update)?$")) | .releaseId'
+        )
+        echo "Download ID is $DOWNLOADID"
+        echo "Refer ID is $REFERID"
+        test -n "$REFERID"
+        test -n "$DOWNLOADID"
+        SITEURL="https://www.blackmagicdesign.com/api/register/us/download/$DOWNLOADID";
         RESOLVEURL=$(curl \
           -s \
           -H "$USERAGENT" \
@@ -75,13 +90,30 @@ stdenv.mkDerivation (finalAttrs: {
           > $out
       '';
 
+  passthru.updateScript = lib.getExe (writeShellApplication {
+    # mostly stolen from pkgs/by-name/da/davinci-resolve/package.nix :)
+    name = "update-blackmagic-desktop-video";
+    runtimeInputs = [
+      common-updater-scripts
+      curl
+      jq
+    ];
+    text = ''
+      set -o errexit
+      downloadsJSON="$(curl --fail --silent https://www.blackmagicdesign.com/api/support/us/downloads.json)"
+      latestLinuxVersion="$(echo "$downloadsJSON" | jq '[.downloads[] | select(.urls.Linux) | .urls.Linux[] | select(.downloadTitle | test("Desktop Video")) | .downloadTitle]' | grep -oP 'Desktop Video \K\d\d\.\d+(\.\d+)?' | sort | tail -n 1)"
+
+      update-source-version blackmagic-desktop-video "$latestLinuxVersion"
+    '';
+  });
+
   postUnpack =
     let
       arch = stdenv.hostPlatform.uname.processor;
     in
     ''
-      tar xf Blackmagic_Desktop_Video_Linux_${lib.head (lib.splitString "a" finalAttrs.version)}/other/${arch}/desktopvideo-${finalAttrs.version}-${arch}.tar.gz
-      unpacked=$NIX_BUILD_TOP/desktopvideo-${finalAttrs.version}-${stdenv.hostPlatform.uname.processor}
+      tar xf Blackmagic_Desktop_Video_Linux_${finalAttrs.version}/other/${arch}/desktopvideo-${finalAttrs.version}*-${arch}.tar.gz
+      unpacked=$NIX_BUILD_TOP/desktopvideo-${finalAttrs.version}*-${stdenv.hostPlatform.uname.processor}
     '';
 
   installPhase = ''
diff --git a/pkgs/os-specific/linux/decklink/default.nix b/pkgs/os-specific/linux/decklink/default.nix
index 03f1b5cb61f8..0cc6f0762985 100644
--- a/pkgs/os-specific/linux/decklink/default.nix
+++ b/pkgs/os-specific/linux/decklink/default.nix
@@ -37,22 +37,24 @@ stdenv.mkDerivation (finalAttrs: {
       arch = stdenv.hostPlatform.uname.processor;
     in
     ''
-      tar xf Blackmagic_Desktop_Video_Linux_${lib.head (lib.splitString "a" finalAttrs.version)}/other/${arch}/desktopvideo-${finalAttrs.version}-${arch}.tar.gz
-      moduleRoot=$NIX_BUILD_TOP/desktopvideo-${finalAttrs.version}-${stdenv.hostPlatform.uname.processor}/usr/src
+      tar xf Blackmagic_Desktop_Video_Linux_${finalAttrs.version}/other/${arch}/desktopvideo-${finalAttrs.version}*-${arch}.tar.gz
+      bmVersion=$(ls -d $NIX_BUILD_TOP/desktopvideo-${finalAttrs.version}*-${arch}/usr/src | sed -e 's/.*desktopvideo-\([[:digit:]\.a-z]\+\).*/\1/')
+
+      moduleRoot=$NIX_BUILD_TOP/desktopvideo-$bmVersion-${arch}/usr/src
       sourceRoot=$moduleRoot
     '';
 
   buildPhase = ''
     runHook preBuild
-    make -C $moduleRoot/blackmagic-${finalAttrs.version} -j$NIX_BUILD_CORES
-    make -C $moduleRoot/blackmagic-io-${finalAttrs.version} -j$NIX_BUILD_CORES
+    make -C $moduleRoot/blackmagic-$bmVersion -j$NIX_BUILD_CORES
+    make -C $moduleRoot/blackmagic-io-$bmVersion -j$NIX_BUILD_CORES
     runHook postBuild
   '';
 
   installPhase = ''
     runHook preInstall
-    make -C $KERNELDIR M=$moduleRoot/blackmagic-${finalAttrs.version} modules_install
-    make -C $KERNELDIR M=$moduleRoot/blackmagic-io-${finalAttrs.version} modules_install
+    make -C $KERNELDIR M=$moduleRoot/blackmagic-$bmVersion modules_install
+    make -C $KERNELDIR M=$moduleRoot/blackmagic-io-$bmVersion modules_install
     runHook postInstall
   '';