diff --git a/.github/workflows/canary.yml b/.github/workflows/canary.yml
index 76b60ceb37c..0c572a4fb61 100644
--- a/.github/workflows/canary.yml
+++ b/.github/workflows/canary.yml
@@ -41,10 +41,6 @@ jobs:
         with:
           cache: npm
           node-version-file: '.nvmrc'
-      - name: Set up FFmpeg
-        uses: FedericoCarboni/setup-ffmpeg@37062fbf7149fc5578d6c57e08aed62458b375d6 # v3.1.0
-        with:
-          ffmpeg-version: 6.1
       - name: Install dependencies
         run: npm ci
         env:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2a4f3f6931c..d84c5b9377b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -183,10 +183,6 @@ jobs:
         with:
           cache: npm
           node-version-file: '.nvmrc'
-      - name: Set up FFmpeg
-        uses: FedericoCarboni/setup-ffmpeg@37062fbf7149fc5578d6c57e08aed62458b375d6 # v3.1.0
-        with:
-          ffmpeg-version: 6.1
       - name: Install dependencies
         run: npm ci
         env:
@@ -285,10 +281,6 @@ jobs:
         with:
           cache: npm
           node-version-file: '.nvmrc'
-      - name: Set up FFmpeg
-        uses: FedericoCarboni/setup-ffmpeg@37062fbf7149fc5578d6c57e08aed62458b375d6 # v3.1.0
-        with:
-          ffmpeg-version: 6.1
       - name: Install dependencies
         run: npm ci
         env:
diff --git a/.github/workflows/deflake.yml b/.github/workflows/deflake.yml
index 78e7e7b5dde..450a1237dff 100644
--- a/.github/workflows/deflake.yml
+++ b/.github/workflows/deflake.yml
@@ -55,10 +55,6 @@ jobs:
         with:
           cache: npm
           node-version-file: '.nvmrc'
-      - name: Set up FFmpeg
-        uses: FedericoCarboni/setup-ffmpeg@37062fbf7149fc5578d6c57e08aed62458b375d6 # v3.1.0
-        with:
-          ffmpeg-version: 6.1
       - name: Install dependencies
         run: npm ci
         env:
@@ -114,10 +110,6 @@ jobs:
         with:
           cache: npm
           node-version-file: '.nvmrc'
-      - name: Set up FFmpeg
-        uses: FedericoCarboni/setup-ffmpeg@37062fbf7149fc5578d6c57e08aed62458b375d6 # v3.1.0
-        with:
-          ffmpeg-version: 6.1
       - name: Install dependencies
         run: npm ci
         env:
diff --git a/test/TestExpectations.json b/test/TestExpectations.json
index fd7046cb394..24a1fea0250 100644
--- a/test/TestExpectations.json
+++ b/test/TestExpectations.json
@@ -188,12 +188,19 @@
     "expectations": ["SKIP"],
     "comment": "TODO: add a comment explaining why this expectation is required (include links to issues)"
   },
+  {
+    "testIdPattern": "[screencast.spec] *",
+    "platforms": ["darwin", "linux", "win32"],
+    "parameters": ["chrome"],
+    "expectations": ["SKIP"],
+    "comment": "Currently no reliable ffmpeg downloads for testing https://github.com/puppeteer/puppeteer/issues/12121"
+  },
   {
     "testIdPattern": "[screencast.spec] *",
     "platforms": ["darwin", "linux", "win32"],
     "parameters": ["firefox"],
     "expectations": ["SKIP"],
-    "comment": "TODO: add a comment explaining why this expectation is required (include links to issues)"
+    "comment": "CDP-specific feature"
   },
   {
     "testIdPattern": "[screenshot.spec] Screenshots Cdp *",
@@ -756,6 +763,13 @@
     "expectations": ["SKIP"],
     "comment": "TODO: add a comment explaining why this expectation is required (include links to issues)"
   },
+  {
+    "testIdPattern": "[prerender.spec] Prerender can screencast",
+    "platforms": ["darwin", "linux", "win32"],
+    "parameters": ["chrome"],
+    "expectations": ["SKIP"],
+    "comment": "Currently no reliable ffmpeg downloads for testing https://github.com/puppeteer/puppeteer/issues/12121"
+  },
   {
     "testIdPattern": "[prerender.spec] Prerender can screencast",
     "platforms": ["darwin", "linux", "win32"],