For #12240: Enable btime youtube-playback Fenix tests (#12760)

Co-authored-by: alexandru.ionescu <alexandru.ionescu@softvision.ro>

taskcluster/ci/browsertime/kind.yml

@@ -232,3 +232,15 @@ jobs:
         test-name: google-search-restaurants
         treeherder:
             symbol: 'Btime(tp6m-28-c)'
+
+    youtube-playback:
+        test-name: youtube-playback
+        run-visual-metrics: False
+        treeherder:
+            symbol: 'Btime(ytp)'
+        args:
+            by-abi:
+                # Bug 1558456 - Stop tracking youtube-playback-test on motoG5 for >1080p cases
+                armeabi-v7a:
+                    - '--test-url-params=exclude=1,2,9,10,17,18,21,22,26,28,30,32,39,40,47,48,55,56,63,64,71,72,79,80,83,84,89,90,95,96'
+                default: []

taskcluster/fenix_taskgraph/transforms/browsertime.py

@@ -94,8 +94,14 @@ def build_browsertime_task(config, tasks):
         run_visual_metrics = task.pop("run-visual-metrics", False)
         if run_visual_metrics:
             task["run"]["command"].append("--browsertime-video")
+            task["run"]["command"].append("--browsertime-no-ffwindowrecorder")
             task["attributes"]["run-visual-metrics"] = True
 
+        # taskcluster is merging task attributes with the default ones
+        # resulting the --cold extra option in the ytp warm tasks
+        if 'youtube-playback' in task["name"]:
+            task["run"]["command"].remove("--cold")
+
         yield task