<h5 dir="auto">System information (version)</h5>

<ul dir="auto">
<li>OpenCV =&gt; 4.1.1</li>
<li>Operating System / Platform =&gt; Windows 64 Bit</li>
<li>Compiler =&gt; Visual Studio 2017</li>
<li>Inference engine 2019.2.275</li>
</ul>
<h5 dir="auto">Detailed description</h5>
<p dir="auto">I used the version of script currently available in the master branch. My model was generated with TF 1.14 and is a ssd mobilenet v2 network. The first image is the result of the inference using the intel inference engine with the optimized version of the net. It is correct (icons should be detected) and similar to what is detected using TF. On the right, the detection using the pbtxt file with OpenCV backend (same result with IE), which is clearly wrong.</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/5644940/65950815-1f41f680-e43f-11e9-8443-1d20cac35d6a.png"><img src="https://user-images.githubusercontent.com/5644940/65950815-1f41f680-e43f-11e9-8443-1d20cac35d6a.png" alt="image" style="max-width: 100%;"></a></p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/5644940/65950677-d4c07a00-e43e-11e9-88cc-16d5298da4b7.png"><img src="https://user-images.githubusercontent.com/5644940/65950677-d4c07a00-e43e-11e9-88cc-16d5298da4b7.png" alt="image" style="max-width: 100%;"></a></p>
<p dir="auto">Files:<br>
<a href="https://github.com/opencv/opencv/files/3675467/inference.zip">inference.zip</a></p>
<h5 dir="auto">Steps to reproduce</h5>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="python ~/opencv/samples/dnn/tf_text_graph_ssd.py --input frozen_inference_graph.pb --config pipeline.config --output graph.pbtxt"><pre class="notranslate"><code class="notranslate">python ~/opencv/samples/dnn/tf_text_graph_ssd.py --input frozen_inference_graph.pb --config pipeline.config --output graph.pbtxt
</code></pre></div>
<p dir="auto">Output:<br>
Scale: [0.050000-0.500000]<br>
Aspect ratios: [1.0, 3.0, 10.0]<br>
Reduce boxes in the lowest layer: True<br>
Number of classes: 6<br>
Number of layers: 6<br>
box predictor: convolutional<br>
Input image size: 800x800</p>
<p dir="auto">Steps for getting optimized model:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="python ~/openvino_2019.2.275/deployment_tools/model_optimizer/mo_tf.py --input_model frozen_inference_graph.pb --tensorflow_use_custom_operations_config ~/openvino_2019.2.275/deployment_tools/model_optimizer/extensions/front/tf/ssd_support_api_v1.14.json --tensorflow_object_detection_api_pipeline_config pipeline.config --input_shape [1,800,800,3]"><pre class="notranslate"><code class="notranslate">python ~/openvino_2019.2.275/deployment_tools/model_optimizer/mo_tf.py --input_model frozen_inference_graph.pb --tensorflow_use_custom_operations_config ~/openvino_2019.2.275/deployment_tools/model_optimizer/extensions/front/tf/ssd_support_api_v1.14.json --tensorflow_object_detection_api_pipeline_config pipeline.config --input_shape [1,800,800,3]
</code></pre></div>
<h5 dir="auto">System information (version)</h5>

<ul dir="auto">
<li>OpenCV =&gt; 3.2.0 and 4.1.2</li>
<li>Operating System / Platform =&gt; raspbian Linux raspberrypi 4.19.75-v7l+ <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="18047504" data-permission-text="Title is private" data-url="https://github.com/opencv/opencv/issues/1270" data-hovercard-type="pull_request" data-hovercard-url="/opencv/opencv/pull/1270/hovercard" href="https://github.com/opencv/opencv/pull/1270">#1270</a> SMP Tue Sep 24 18:51:41 BST 2019 armv7l GNU       /Linux</li>
<li>Compiler =&gt; gcc (Raspbian 8.3.0-6+rpi1) 8.3.0</li>
<li>Python 2.7.16 (default, Oct 10 2019, 22:02:15)</li>
<li>Python 3.7.3 (default, Apr  3 2019, 05:39:12)</li>
<li>cameras are IMX290</li>
</ul>
<h5 dir="auto">Detailed description</h5>
<p dir="auto">I have four USB cameras connected to the raspberry pi via USB.<br>
When I run this code on python2 it succeeds but when I run it on python3 it fails.</p>
<p dir="auto">Not sure what else to include, I'll be happy to provide more info.</p>
<p dir="auto">Thanks</p>
<div class="highlight highlight-source-python notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import cv2

cap1 = cv2.VideoCapture(&quot;/dev/video0&quot;)
cap2 = cv2.VideoCapture(&quot;/dev/video2&quot;)
cap3 = cv2.VideoCapture(&quot;/dev/video4&quot;)
cap4 = cv2.VideoCapture(&quot;/dev/video6&quot;)

print(&quot;cap1&quot;, cap1.read()[1][0])
print(&quot;cap2&quot;, cap2.read()[1][0])
print(&quot;cap3&quot;, cap3.read()[1][0])
print(&quot;cap4&quot;, cap4.read()[1][0])

cap1.release()
cap2.release()
cap3.release()
cap4.release()"><pre class="notranslate"><span class="pl-k">import</span> <span class="pl-s1">cv2</span>

<span class="pl-s1">cap1</span> <span class="pl-c1">=</span> <span class="pl-s1">cv2</span>.<span class="pl-v">VideoCapture</span>(<span class="pl-s">"/dev/video0"</span>)
<span class="pl-s1">cap2</span> <span class="pl-c1">=</span> <span class="pl-s1">cv2</span>.<span class="pl-v">VideoCapture</span>(<span class="pl-s">"/dev/video2"</span>)
<span class="pl-s1">cap3</span> <span class="pl-c1">=</span> <span class="pl-s1">cv2</span>.<span class="pl-v">VideoCapture</span>(<span class="pl-s">"/dev/video4"</span>)
<span class="pl-s1">cap4</span> <span class="pl-c1">=</span> <span class="pl-s1">cv2</span>.<span class="pl-v">VideoCapture</span>(<span class="pl-s">"/dev/video6"</span>)

<span class="pl-en">print</span>(<span class="pl-s">"cap1"</span>, <span class="pl-s1">cap1</span>.<span class="pl-en">read</span>()[<span class="pl-c1">1</span>][<span class="pl-c1">0</span>])
<span class="pl-en">print</span>(<span class="pl-s">"cap2"</span>, <span class="pl-s1">cap2</span>.<span class="pl-en">read</span>()[<span class="pl-c1">1</span>][<span class="pl-c1">0</span>])
<span class="pl-en">print</span>(<span class="pl-s">"cap3"</span>, <span class="pl-s1">cap3</span>.<span class="pl-en">read</span>()[<span class="pl-c1">1</span>][<span class="pl-c1">0</span>])
<span class="pl-en">print</span>(<span class="pl-s">"cap4"</span>, <span class="pl-s1">cap4</span>.<span class="pl-en">read</span>()[<span class="pl-c1">1</span>][<span class="pl-c1">0</span>])

<span class="pl-s1">cap1</span>.<span class="pl-en">release</span>()
<span class="pl-s1">cap2</span>.<span class="pl-en">release</span>()
<span class="pl-s1">cap3</span>.<span class="pl-en">release</span>()
<span class="pl-s1">cap4</span>.<span class="pl-en">release</span>()</pre></div>
<p dir="auto">The error message:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="select timeout
VIDIOC_DQBUF: Resource temporarily unavailable
Traceback (most recent call last):
  File &quot;multiplecameratest.py&quot;, line 11, in &lt;module&gt;
    print(&quot;cap4&quot;, cap4.read()[1][0])
TypeError: 'NoneType' object is not subscriptable"><pre class="notranslate"><code class="notranslate">select timeout
VIDIOC_DQBUF: Resource temporarily unavailable
Traceback (most recent call last):
  File "multiplecameratest.py", line 11, in &lt;module&gt;
    print("cap4", cap4.read()[1][0])
TypeError: 'NoneType' object is not subscriptable
</code></pre></div>

<h5 dir="auto">more info</h5>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="pi@raspberrypi:~ $ python
Python 2.7.16 (default, Oct 10 2019, 22:02:15)
[GCC 8.3.0] on linux2
Type &quot;help&quot;, &quot;copyright&quot;, &quot;credits&quot; or &quot;license&quot; for more information.
&gt;&gt;&gt; import cv2
&gt;&gt;&gt; cv2.__version__
'3.2.0'
&gt;&gt;&gt;
pi@raspberrypi:~ $ python3
Python 3.7.3 (default, Apr  3 2019, 05:39:12)
[GCC 8.2.0] on linux
Type &quot;help&quot;, &quot;copyright&quot;, &quot;credits&quot; or &quot;license&quot; for more information.
&gt;&gt;&gt; import cv2
&gt;&gt;&gt; cv2.__version__
'4.1.2'
&gt;&gt;&gt;"><pre class="notranslate"><code class="notranslate">pi@raspberrypi:~ $ python
Python 2.7.16 (default, Oct 10 2019, 22:02:15)
[GCC 8.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
&gt;&gt;&gt; import cv2
&gt;&gt;&gt; cv2.__version__
'3.2.0'
&gt;&gt;&gt;
pi@raspberrypi:~ $ python3
Python 3.7.3 (default, Apr  3 2019, 05:39:12)
[GCC 8.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
&gt;&gt;&gt; import cv2
&gt;&gt;&gt; cv2.__version__
'4.1.2'
&gt;&gt;&gt;
</code></pre></div>
<h4 dir="auto">console output from fresh reboot</h4>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="login as: pi
pi@'s password:
Linux raspberrypi 4.19.75-v7l+ #1270 SMP Tue Sep 24 18:51:41 BST 2019 armv7l

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Tue Dec 17 14:14:40 2019 from 192.168.1.99
pi@raspberrypi:~ $ python3  multiplecameratest.py
cap1 [[10  0  8]
 [10  0  8]
 [10  0 11]
 ...
 [ 6  0 11]
 [ 2  0 11]
 [ 2  0 11]]
cap2 [[ 5  0 19]
 [ 3  0 18]
 [ 4  0 18]
 ...
 [ 0  0  8]
 [ 2  0  8]
 [ 2  0  8]]
cap3 [[104 135 178]
 [104 135 178]
 [100 134 181]
 ...
 [145 192 241]
 [147 196 240]
 [148 197 242]]
select timeout
VIDIOC_DQBUF: Resource temporarily unavailable
Traceback (most recent call last):
  File &quot;multiplecameratest.py&quot;, line 11, in &lt;module&gt;
    print(&quot;cap4&quot;, cap4.read()[1][0])
TypeError: 'NoneType' object is not subscriptable
pi@raspberrypi:~ $ python  multiplecameratest.py
('cap1', array([[106, 113, 130],
       [ 99, 103, 122],
       [ 97,  97, 121],
       ...,
       [129,  78, 140],
       [134,  78, 143],
       [140,  79, 147]], dtype=uint8))
('cap2', array([[190, 221, 212],
       [190, 219, 210],
       [189, 217, 211],
       ...,
       [117,  98,  85],
       [101,  91,  74],
       [ 92,  85,  66]], dtype=uint8))
('cap3', array([[141, 142, 133],
       [141, 142, 133],
       [141, 142, 133],
       ...,
       [191, 191, 175],
       [191, 191, 175],
       [192, 192, 176]], dtype=uint8))
('cap4', array([[175, 164, 156],
       [176, 165, 157],
       [176, 165, 157],
       ...,
       [131, 125, 120],
       [130, 124, 119],
       [130, 124, 119]], dtype=uint8))
pi@raspberrypi:~ $ python3  multiplecameratest.py
cap1 [[ 94  89 131]
 [ 93  88 130]
 [ 94  77 121]
 ...
 [ 83  67  81]
 [ 91  64  96]
 [104  77 109]]
cap2 [[234 244 242]
 [231 240 239]
 [252 244 246]
 ...
 [133 106 126]
 [145 123 127]
 [123 101 105]]
cap3 [[154 150 141]
 [154 150 141]
 [152 146 142]
 ...
 [205 210 195]
 [205 210 195]
 [205 210 195]]
select timeout
VIDIOC_DQBUF: Resource temporarily unavailable
Traceback (most recent call last):
  File &quot;multiplecameratest.py&quot;, line 11, in &lt;module&gt;
    print(&quot;cap4&quot;, cap4.read()[1][0])
TypeError: 'NoneType' object is not subscriptable
pi@raspberrypi:~ $ python  multiplecameratest.py
('cap1', array([[ 82,  94, 128],
       [ 75,  85, 119],
       [ 70,  81, 111],
       ...,
       [119,  95, 119],
       [110,  84, 108],
       [ 98,  69,  95]], dtype=uint8))
('cap2', array([[197, 226, 223],
       [197, 225, 225],
       [199, 225, 225],
       ...,
       [143, 129, 133],
       [127, 114, 112],
       [112, 100,  96]], dtype=uint8))
('cap3', array([[142, 145, 136],
       [142, 145, 136],
       [142, 145, 136],
       ...,
       [190, 194, 183],
       [190, 194, 183],
       [190, 194, 183]], dtype=uint8))
('cap4', array([[184, 182, 172],
       [184, 182, 172],
       [184, 182, 172],
       ...,
       [150, 150, 144],
       [150, 150, 144],
       [150, 150, 144]], dtype=uint8))"><pre class="notranslate"><code class="notranslate">login as: pi
pi@'s password:
Linux raspberrypi 4.19.75-v7l+ #1270 SMP Tue Sep 24 18:51:41 BST 2019 armv7l

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Tue Dec 17 14:14:40 2019 from 192.168.1.99
pi@raspberrypi:~ $ python3  multiplecameratest.py
cap1 [[10  0  8]
 [10  0  8]
 [10  0 11]
 ...
 [ 6  0 11]
 [ 2  0 11]
 [ 2  0 11]]
cap2 [[ 5  0 19]
 [ 3  0 18]
 [ 4  0 18]
 ...
 [ 0  0  8]
 [ 2  0  8]
 [ 2  0  8]]
cap3 [[104 135 178]
 [104 135 178]
 [100 134 181]
 ...
 [145 192 241]
 [147 196 240]
 [148 197 242]]
select timeout
VIDIOC_DQBUF: Resource temporarily unavailable
Traceback (most recent call last):
  File "multiplecameratest.py", line 11, in &lt;module&gt;
    print("cap4", cap4.read()[1][0])
TypeError: 'NoneType' object is not subscriptable
pi@raspberrypi:~ $ python  multiplecameratest.py
('cap1', array([[106, 113, 130],
       [ 99, 103, 122],
       [ 97,  97, 121],
       ...,
       [129,  78, 140],
       [134,  78, 143],
       [140,  79, 147]], dtype=uint8))
('cap2', array([[190, 221, 212],
       [190, 219, 210],
       [189, 217, 211],
       ...,
       [117,  98,  85],
       [101,  91,  74],
       [ 92,  85,  66]], dtype=uint8))
('cap3', array([[141, 142, 133],
       [141, 142, 133],
       [141, 142, 133],
       ...,
       [191, 191, 175],
       [191, 191, 175],
       [192, 192, 176]], dtype=uint8))
('cap4', array([[175, 164, 156],
       [176, 165, 157],
       [176, 165, 157],
       ...,
       [131, 125, 120],
       [130, 124, 119],
       [130, 124, 119]], dtype=uint8))
pi@raspberrypi:~ $ python3  multiplecameratest.py
cap1 [[ 94  89 131]
 [ 93  88 130]
 [ 94  77 121]
 ...
 [ 83  67  81]
 [ 91  64  96]
 [104  77 109]]
cap2 [[234 244 242]
 [231 240 239]
 [252 244 246]
 ...
 [133 106 126]
 [145 123 127]
 [123 101 105]]
cap3 [[154 150 141]
 [154 150 141]
 [152 146 142]
 ...
 [205 210 195]
 [205 210 195]
 [205 210 195]]
select timeout
VIDIOC_DQBUF: Resource temporarily unavailable
Traceback (most recent call last):
  File "multiplecameratest.py", line 11, in &lt;module&gt;
    print("cap4", cap4.read()[1][0])
TypeError: 'NoneType' object is not subscriptable
pi@raspberrypi:~ $ python  multiplecameratest.py
('cap1', array([[ 82,  94, 128],
       [ 75,  85, 119],
       [ 70,  81, 111],
       ...,
       [119,  95, 119],
       [110,  84, 108],
       [ 98,  69,  95]], dtype=uint8))
('cap2', array([[197, 226, 223],
       [197, 225, 225],
       [199, 225, 225],
       ...,
       [143, 129, 133],
       [127, 114, 112],
       [112, 100,  96]], dtype=uint8))
('cap3', array([[142, 145, 136],
       [142, 145, 136],
       [142, 145, 136],
       ...,
       [190, 194, 183],
       [190, 194, 183],
       [190, 194, 183]], dtype=uint8))
('cap4', array([[184, 182, 172],
       [184, 182, 172],
       [184, 182, 172],
       ...,
       [150, 150, 144],
       [150, 150, 144],
       [150, 150, 144]], dtype=uint8))
</code></pre></div>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="pi@raspberrypi:~ $ ls /dev/v4l/by-path/
platform-bcm2835-codec-video-index0
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1:1.0-video-index0
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1:1.0-video-index1
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1.3:1.0-video-index0
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1.3:1.0-video-index1
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1.4:1.0-video-index0
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1.4:1.0-video-index1
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:2:1.0-video-index0
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:2:1.0-video-index1"><pre class="notranslate"><code class="notranslate">pi@raspberrypi:~ $ ls /dev/v4l/by-path/
platform-bcm2835-codec-video-index0
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1:1.0-video-index0
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1:1.0-video-index1
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1.3:1.0-video-index0
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1.3:1.0-video-index1
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1.4:1.0-video-index0
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1.4:1.0-video-index1
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:2:1.0-video-index0
platform-fd500000.pcie-pci-0000:01:00.0-usb-0:2:1.0-video-index1
</code></pre></div>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="pi@raspberrypi:~ $ v4l2-ctl --all
Driver Info:
        Driver name      : uvcvideo
        Card type        : KS2A418-3.0: KS2A418-3.0
        Bus info         : usb-0000:01:00.0-1
        Driver version   : 4.19.75
        Capabilities     : 0x84a00001
                Video Capture
                Metadata Capture
                Streaming
                Extended Pix Format
                Device Capabilities
        Device Caps      : 0x04200001
                Video Capture
                Streaming
                Extended Pix Format
Media Driver Info:
        Driver name      : uvcvideo
        Model            : KS2A418-3.0: KS2A418-3.0
        Serial           :
        Bus info         : 1
        Media version    : 4.19.75
        Hardware revision: 0x00006003 (24579)
        Driver version   : 4.19.75
Interface Info:
        ID               : 0x03000002
        Type             : V4L Video
Entity Info:
        ID               : 0x00000001 (1)
        Name             : KS2A418-3.0: KS2A418-3.0
        Function         : V4L2 I/O
        Flags         : default
        Pad 0x01000007   : 0: Sink
          Link 0x02000013: from remote pad 0x100000a of entity 'Extension 4': Data, Enabled, Immutable
Priority: 2
Video input : 0 (Camera 1: ok)
Format Video Capture:
        Width/Height      : 640/480
        Pixel Format      : 'MJPG' (Motion-JPEG)
        Field             : None
        Bytes per Line    : 0
        Size Image        : 614400
        Colorspace        : sRGB
        Transfer Function : Default (maps to sRGB)
        YCbCr/HSV Encoding: Default (maps to ITU-R 601)
        Quantization      : Default (maps to Full Range)
        Flags             :
Crop Capability Video Capture:
        Bounds      : Left 0, Top 0, Width 640, Height 480
        Default     : Left 0, Top 0, Width 640, Height 480
        Pixel Aspect: 1/1
Selection: crop_default, Left 0, Top 0, Width 640, Height 480, Flags:
Selection: crop_bounds, Left 0, Top 0, Width 640, Height 480, Flags:
Streaming Parameters Video Capture:
        Capabilities     : timeperframe
        Frames per second: 30.000 (30/1)
        Read buffers     : 0
                     brightness 0x00980900 (int)    : min=-64 max=64 step=1 default=4 value=80
                       contrast 0x00980901 (int)    : min=0 max=95 step=1 default=44 value=44
                     saturation 0x00980902 (int)    : min=0 max=100 step=1 default=58 value=58
                            hue 0x00980903 (int)    : min=-2000 max=2000 step=1 default=0 value=0
 white_balance_temperature_auto 0x0098090c (bool)   : default=1 value=1
                          gamma 0x00980910 (int)    : min=100 max=300 step=1 default=150 value=150
           power_line_frequency 0x00980918 (menu)   : min=0 max=2 default=1 value=1
      white_balance_temperature 0x0098091a (int)    : min=2800 max=6500 step=1 default=4600 value=4600 flags=inactive
                      sharpness 0x0098091b (int)    : min=1 max=100 step=1 default=16 value=16
         backlight_compensation 0x0098091c (int)    : min=0 max=1 step=1 default=1 value=1
                  exposure_auto 0x009a0901 (menu)   : min=0 max=3 default=3 value=3
              exposure_absolute 0x009a0902 (int)    : min=78 max=5000 step=1 default=312 value=78 flags=inactive"><pre class="notranslate"><code class="notranslate">pi@raspberrypi:~ $ v4l2-ctl --all
Driver Info:
        Driver name      : uvcvideo
        Card type        : KS2A418-3.0: KS2A418-3.0
        Bus info         : usb-0000:01:00.0-1
        Driver version   : 4.19.75
        Capabilities     : 0x84a00001
                Video Capture
                Metadata Capture
                Streaming
                Extended Pix Format
                Device Capabilities
        Device Caps      : 0x04200001
                Video Capture
                Streaming
                Extended Pix Format
Media Driver Info:
        Driver name      : uvcvideo
        Model            : KS2A418-3.0: KS2A418-3.0
        Serial           :
        Bus info         : 1
        Media version    : 4.19.75
        Hardware revision: 0x00006003 (24579)
        Driver version   : 4.19.75
Interface Info:
        ID               : 0x03000002
        Type             : V4L Video
Entity Info:
        ID               : 0x00000001 (1)
        Name             : KS2A418-3.0: KS2A418-3.0
        Function         : V4L2 I/O
        Flags         : default
        Pad 0x01000007   : 0: Sink
          Link 0x02000013: from remote pad 0x100000a of entity 'Extension 4': Data, Enabled, Immutable
Priority: 2
Video input : 0 (Camera 1: ok)
Format Video Capture:
        Width/Height      : 640/480
        Pixel Format      : 'MJPG' (Motion-JPEG)
        Field             : None
        Bytes per Line    : 0
        Size Image        : 614400
        Colorspace        : sRGB
        Transfer Function : Default (maps to sRGB)
        YCbCr/HSV Encoding: Default (maps to ITU-R 601)
        Quantization      : Default (maps to Full Range)
        Flags             :
Crop Capability Video Capture:
        Bounds      : Left 0, Top 0, Width 640, Height 480
        Default     : Left 0, Top 0, Width 640, Height 480
        Pixel Aspect: 1/1
Selection: crop_default, Left 0, Top 0, Width 640, Height 480, Flags:
Selection: crop_bounds, Left 0, Top 0, Width 640, Height 480, Flags:
Streaming Parameters Video Capture:
        Capabilities     : timeperframe
        Frames per second: 30.000 (30/1)
        Read buffers     : 0
                     brightness 0x00980900 (int)    : min=-64 max=64 step=1 default=4 value=80
                       contrast 0x00980901 (int)    : min=0 max=95 step=1 default=44 value=44
                     saturation 0x00980902 (int)    : min=0 max=100 step=1 default=58 value=58
                            hue 0x00980903 (int)    : min=-2000 max=2000 step=1 default=0 value=0
 white_balance_temperature_auto 0x0098090c (bool)   : default=1 value=1
                          gamma 0x00980910 (int)    : min=100 max=300 step=1 default=150 value=150
           power_line_frequency 0x00980918 (menu)   : min=0 max=2 default=1 value=1
      white_balance_temperature 0x0098091a (int)    : min=2800 max=6500 step=1 default=4600 value=4600 flags=inactive
                      sharpness 0x0098091b (int)    : min=1 max=100 step=1 default=16 value=16
         backlight_compensation 0x0098091c (int)    : min=0 max=1 step=1 default=1 value=1
                  exposure_auto 0x009a0901 (menu)   : min=0 max=3 default=3 value=3
              exposure_absolute 0x009a0902 (int)    : min=78 max=5000 step=1 default=312 value=78 flags=inactive
</code></pre></div>