Revert to stable 640x360 at 10 fps

Author: bonnieking

src/ac_training_lab/picam/device.py

@@ -151,11 +151,11 @@ def start_stream(ffmpeg_url, stream_key):
         "--mode",
         "1280:720",
         "--width",
-        "854",
+        "640",
         "--height",
-        "480",
+        "360",
         "--framerate",
-        "12",
+        "10",
         "--codec",
         "yuv420",
     ]
@@ -188,9 +188,9 @@ def start_stream(ffmpeg_url, stream_key):
         "-pix_fmt",
         "yuv420p",
         "-s",
-        "854x480",
+        "640x360",
         "-r",
-        "12",
+        "10",
         "-i",
         "pipe:0",
         "-c:v",