diff --git a/apps/DeepFaceLive/backend/CameraSource.py b/apps/DeepFaceLive/backend/CameraSource.py
index 13c7471..cf65c64 100644
--- a/apps/DeepFaceLive/backend/CameraSource.py
+++ b/apps/DeepFaceLive/backend/CameraSource.py
@@ -55,12 +55,15 @@ class _DriverType(IntEnum):
     DSHOW = 0
     MSMF = 1
     GSTREAMER = 2
+    OPENCV = 3
 
 _DriverType_names = { _DriverType.DSHOW : 'DirectShow',
                       _DriverType.MSMF : 'Microsoft Media Foundation',
                       _DriverType.GSTREAMER : 'GStreamer',
+                      _DriverType.OPENCV : 'OpenCV',
                     }
 
+
 class _RotationType(IntEnum):
     ROTATION_0 = 0
     ROTATION_90 = 1
@@ -112,6 +115,7 @@ class CameraSourceWorker(BackendWorker):
             cv_api = {_DriverType.DSHOW: cv2.CAP_DSHOW,
                       _DriverType.MSMF: cv2.CAP_MSMF,
                       _DriverType.GSTREAMER: cv2.CAP_GSTREAMER,
+                      _DriverType.OPENCV: 0,
                       }[state.driver]
 
             vcap = cv2.VideoCapture(state.device_idx, cv_api)
diff --git a/build/linux/README.md b/build/linux/README.md
index a47de96..ff368cb 100644
--- a/build/linux/README.md
+++ b/build/linux/README.md
@@ -12,4 +12,9 @@ git clone DeepFaceLive
 cd DeepFaceLive/build/linux/
 # start.sh builds and runs container with proper options, then example.sh will start DeepFaceLive with example options
 ./start.sh
+
+Usage of ./start.sh
+# -d specify a folder for DeepFaceLive data (videos, models, etc)
+-d /home/user/DeepFaceLive_data
+# -c will pass through existing video devices such as /dev/video0 and /dev/video1, etc
 ```
diff --git a/build/linux/start.sh b/build/linux/start.sh
index 159983f..8f7e889 100755
--- a/build/linux/start.sh
+++ b/build/linux/start.sh
@@ -1,5 +1,33 @@
 #!/bin/bash
+
+DATA_FOLDER=$(pwd)/data/
+declare CAM0 CAM1 CAM2 CAM3
+printf "\n"
+while getopts 'cd:h' opt; do
+    case "$opt" in
+        c)
+            printf "Starting with camera devices\n"
+            test -e /dev/video0 && CAM0="--device=/dev/video0:/dev/video0"
+            test -e /dev/video1 && CAM1=--device=/dev/video1:/dev/video1
+            test -e /dev/video2 && CAM2=--device=/dev/video2:/dev/video2
+            test -e /dev/video3 && CAM3=--device=/dev/video3:/dev/video3
+            echo $CAM0 $CAM1 $CAM2 $CAM3
+            ;;
+        d)
+            DATA_FOLDER="$OPTARG"
+            printf "Starting with data folder: %s\n" "$DATA_FOLDER"
+            ;;
+   
+        ?|h)
+            printf "Usage:\n$(basename $0) [-d] /path/to/your/data/folder\n"
+            exit 1
+            ;;
+    esac
+done
+shift "$(($OPTIND -1))"
+printf "\n"
+
 # Warning xhost + is overly permissive and will reduce system security. Edit as desired
 docker build . -t deepfacelive
 xhost +
-docker run --ipc host --gpus all -e DISPLAY=$DISPLAY -v /tmp/.X11-unix:/tmp/.X11-unix -v $(pwd)/data/:/data/  --rm -it deepfacelive
+docker run --ipc host --gpus all -e DISPLAY=$DISPLAY -v /tmp/.X11-unix:/tmp/.X11-unix -v $DATA_FOLDER:/data/ $CAM0 $CAM1 $CAM2 $CAM3  --rm -it deepfacelive