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<div class="moz-cite-prefix">On 01/22/2018 04:36 AM, Jajoo, Malhar
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:DB6PR06MB31572973C98ADFC45527A32EB0EC0@DB6PR06MB3157.eurprd06.prod.outlook.com">
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<p style="margin-top:0;margin-bottom:0">Hi,</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<div>I am using<b> sricam SP019</b> IP(Wireless) camera.</div>
<div>I have been able to find the RTSP URL for my camera:
(<a class="moz-txt-link-rfc2396E" href="rtsp://IP_ADDRESS:554/onvif1">"rtsp://IP_ADDRESS:554/onvif1"</a>).</div>
<div>However, I am unable to open the RTSP stream using openCV
VideoCapture interface.</div>
<div><br>
</div>
<div><b>Already tried ( and didn't help much )-</b></div>
<div><br>
</div>
<div>
<ol style="margin-bottom: 0px; margin-top: 0px;">
<li>I have posted in the openCV forum<span style="font-size:
12pt;"> but have not received any reply yet.<br>
</span><br>
</li>
<li>Tried the BigBuckBunny RTSP URL from website (<a
href="https://www.wowza.com/html/mobile.html"
class="OWAAutoLink" id="LPlnk348167"
previewremoved="true" moz-do-not-send="true">https://www.wowza.com/html/mobile.html</a>)
<br>
<b>and it works using openCV cv::VideoCapture().<br>
<br>
</b></li>
<li><span style="font-family: Calibri, Helvetica,
sans-serif, EmojiFont, "Apple Color Emoji",
"Segoe UI Emoji", NotoColorEmoji, "Segoe
UI Symbol", "Android Emoji",
EmojiSymbols; font-size: 16px;">I managed to play my IP
cameras RTSP stream in VLC and the onvifer Android app
provided.<br>
<br>
</span>
<div style="font-family: Calibri, Helvetica, sans-serif,
EmojiFont, "Apple Color Emoji", "Segoe UI
Emoji", NotoColorEmoji, "Segoe UI
Symbol", "Android Emoji", EmojiSymbols;
font-size: 16px;">
The app also provided the following info - </div>
<div style="font-family: Calibri, Helvetica, sans-serif,
EmojiFont, "Apple Color Emoji", "Segoe UI
Emoji", NotoColorEmoji, "Segoe UI
Symbol", "Android Emoji", EmojiSymbols;
font-size: 16px;">
- Encoding: H264</div>
<div style="font-family: Calibri, Helvetica, sans-serif,
EmojiFont, "Apple Color Emoji", "Segoe UI
Emoji", NotoColorEmoji, "Segoe UI
Symbol", "Android Emoji", EmojiSymbols;
font-size: 16px;">
- Transport Protocol: RTP/RTSP/TCP</div>
<div style="font-family: Calibri, Helvetica, sans-serif,
EmojiFont, "Apple Color Emoji", "Segoe UI
Emoji", NotoColorEmoji, "Segoe UI
Symbol", "Android Emoji", EmojiSymbols;
font-size: 16px;">
</div>
<div style="font-family: Calibri, Helvetica, sans-serif,
EmojiFont, "Apple Color Emoji", "Segoe UI
Emoji", NotoColorEmoji, "Segoe UI
Symbol", "Android Emoji", EmojiSymbols;
font-size: 16px;">
- RTSP port: 554</div>
<br>
<br>
</li>
<li><span style="font-size: 12pt;">I have also recompiled
openCV from scratch enabling gstreamer and ffmpeg Cmake
Flags (-D WITH_GSTREAMER=ON and -D WITH_FFMPEG=ON).</span></li>
</ol>
</div>
<div><br>
</div>
<div><br>
</div>
<div>
<div style="font-family: Calibri, Helvetica, sans-serif,
EmojiFont, "Apple Color Emoji", "Segoe UI
Emoji", NotoColorEmoji, "Segoe UI Symbol",
"Android Emoji", EmojiSymbols; font-size: 16px;">
However, I still keep getting the<b> error</b> shown: <span><b>GLib-GObject-CRITICAL
**: g_object_set: assertion 'G_IS_OBJECT (object)'
failed</b></span></div>
<div style="font-family: Calibri, Helvetica, sans-serif,
EmojiFont, "Apple Color Emoji", "Segoe UI
Emoji", NotoColorEmoji, "Segoe UI Symbol",
"Android Emoji", EmojiSymbols; font-size: 16px;">
<br>
</div>
</div>
<div style="font-family: Calibri, Helvetica, sans-serif,
EmojiFont, "Apple Color Emoji", "Segoe UI
Emoji", NotoColorEmoji, "Segoe UI Symbol",
"Android Emoji", EmojiSymbols; font-size: 16px;">
<br>
</div>
<div><b>My question</b>: </div>
<div>I<span style="font-size: 12pt;">t would be extremely
helpful if someone could give a hint as to what's causing
the error.</span></div>
<div><br>
</div>
<div>Thanks!</div>
<br>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
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</pre>
</blockquote>
<p>1) Try playing the RTSP stream in something like VLC
(videolan.org) to make sure the camera is working</p>
<p><br>
</p>
<p>2) Try using gst-launch-1.0 at the command line to build a
pipeline that plays your camera stream with just GStreamer; this
would isolate it from any OpenCV issues (for which you may not
find much help here).</p>
<p><br>
</p>
<p>something like:</p>
<p><br>
</p>
<p>$ gst-launch-1.0 -v rtspsrc location=<a class="moz-txt-link-freetext" href="rtsp://IP_ADDRESS:554/onvif1">rtsp://IP_ADDRESS:554/onvif1</a>
! rtph264depay ! avdec_h264 ! videoconvert ! xvimagesink</p>
<p><br>
</p>
<p>there are also more automatic/portable ways to do that with
playbin, e.g.:</p>
<p><br>
</p>
<p>gst-launch-1.0 -v playbin uri=<a class="moz-txt-link-freetext" href="rtsp://IP_ADDRESS:554/onvif1">rtsp://IP_ADDRESS:554/onvif1</a></p>
<p><br>
</p>
<p>Cheers,</p>
<p><br>
</p>
<p>Mark.</p>
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