VLC v1 finished, improve on instructions, improve on infra

evaluation_examples/examples/vlc/efcf0d81-0835-4880-b2fd-d866e8bc2294.json

@@ -1,30 +1,47 @@
 {
   "id": "efcf0d81-0835-4880-b2fd-d866e8bc2294",
   "snapshot": "base_setup",
-  "instruction": "Set this frame of the current video as my wallpaper",
-  "source": "https://www.youtube.com/watch?v=XHprwDJ0-fU&t=436s",
+  "instruction": "Make this part of the video my computer's background picture",
+  "source": "https://www.youtube.com/watch?v=XHprwDJ0-fU&t=436s, https://help.ubuntu.com/stable/ubuntu-help/look-background.html.en",
   "config": [
     {
       "type": "download",
       "parameters": {
         "files": [
           {
-            "url": "",
-            "path": ""
+            "url": "https://drive.usercontent.google.com/download?id=1H9D0jSkzpzEWsJZG0HdNNNHDMi3fnGli&export=download&authuser=0&confirm=t&uuid=a6d03223-db7a-48bd-b5f8-50b51f4d3d68&at=APZUnTVi3cqgvRV49c6sluV-nMo_:1704879367756",
+            "path": "Desktop/Interstellar Movie - Official Trailer.mp4"
           }
         ]
       }
     },
     {
       "type": "launch",
-        "parameters": {
-            "command": ["vlc", "/path/to/your/video.mp4", "--start-time=0", "--run-time=10", "vlc://quit", "&&", "vlc", "/path/to/your/video.mp4", "--start-time=10"]
-        }
+      "parameters": {
+        "command": [
+          "vlc",
+          "--start-time=120.5",
+          "--stop-time=121",
+          "--play-and-pause",
+          "Desktop/Interstellar Movie - Official Trailer.mp4"
+        ]
+      }
     }
   ],
   "trajectory": "trajectories/",
   "related_apps": [
     "vlc"
   ],
-  "evaluator": "evaluation_dir"
+  "evaluator": {
+    "func": "compare_images",
+    "expected": {
+      "type": "cloud_file",
+      "path": "https://drive.usercontent.google.com/download?id=10P8kLkWeYhtK3Gl15nB-gH7VLO4S7Xal&export=download&authuser=0&confirm=t&uuid=d5c5db29-435d-404f-8900-683bf56fbc66&at=APZUnTXm1ZHS7CbGiWaB04WySH-t:1704891263184",
+      "dest": "interstellar_wallpaper_gold.png"
+    },
+    "result": {
+      "type": "vm_wallpaper",
+      "dest": "result_wallpaper.png"
+    }
+  }
 }