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2017-04-05 13:25:11 -0600 | asked a question | ONVIF support Hey there, I can connect my OpenCV program with RTSP streams, except with the ones that ends with onvif1. E.g. rtsp://192.168.88.130:554/onvif1 Does anyone knows why this might not work as expected? Cédric |
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2017-02-25 15:47:41 -0600 | asked a question | SIGSEGV while write video with x264 encoder Hey I'm using the OpenCV VideoWriter to create some video's. The good news that it works, but unfortunately isn't very stable. The system crashes randomly with a segmentation fault. I've debugged with GDB and located the issue with libx264. I was wondering if I could do something about it? Is it caused by writing a wrongly formatted image? I have this issue with IP camera's and USB camera's. |
2017-01-31 00:57:30 -0600 | answered a question | Need OpenCV expert near BARCELONA for job I live in Belgium, and can work remote. More information on verstraeten.io and kerberos.io |
2017-01-30 12:01:29 -0600 | commented question | Linking error carotene Opencv 3.2 on ARM Well i'm building it for an ARM device, though the OpenCV library is compiled correctly. I think I'm just missing to include a library for linking? |
2017-01-30 10:36:02 -0600 | asked a question | Linking error carotene Opencv 3.2 on ARM Hey I have succesfully build OpenCV 3.2.0 on an ARM device. However when linking my binary I got exceptions from carotene. Am I missing a library? Cédric |
2016-12-23 10:43:51 -0600 | commented question | Videowriter recording MP4 + X264 (OpenCV 3.1) Looks like someone used the same trick: http://www.qiku.es/pregunta/433708/es.... |
2016-12-23 10:39:05 -0600 | commented question | Videowriter recording MP4 + X264 (OpenCV 3.1) if I replace the fourcc by 0x00000021 the error goes away, but still not clear what this codec is? |
2016-12-23 09:28:14 -0600 | commented question | Videowriter recording MP4 + X264 (OpenCV 3.1) Should I just swap the FOURCC with H263 or is it something else? FYI I compiled FFMPEG with h264 support. |
2016-12-23 09:12:13 -0600 | commented question | Videowriter recording MP4 + X264 (OpenCV 3.1) I used this CV_FOURCC('X','2','6','4'). I've tried it with other containers (mkv and avi), and I can confirm that it works. However the reason I want to use MP4, is because if I use the containers (mkv or avi), it doesn't get displayed in the HTML5 video element (in Safari and Firefox); though Chrome can handle it. Therefore I prefer to have the MP4 container, as this works in all browsers (Firefox, Safari, and Chrome). |
2016-12-23 08:02:54 -0600 | asked a question | Videowriter recording MP4 + X264 (OpenCV 3.1) I'm trying to record a video with the X264 codec and MP4 format. The resulting video recording works, and can be played with a videoplayer, however I receive following warning. I've been looking in the OpenCV code and it looks that a fallback mechanism is used (and another tag is used instead). Can someone tell me why this is happening, and how I can remove the warning. https://github.com/opencv/opencv/blob... Thanks! Cédric |
2016-12-08 04:24:47 -0600 | received badge | ● Student (source) |
2016-12-08 04:08:25 -0600 | asked a question | Kerberos.io looks for OpenCV developers Hey, we have this awesome video surveillance project built on OpenCV. If you want to contribute to this project and the OpenCV community this is the perfect place to see OpenCV in action and used by regular users. More information on www.kerberos.io and https://github.com/kerberos-io If you see any features which aren't implemented or see improvements please write it down here. Thanks! Cédric |
2016-12-07 13:41:15 -0600 | commented question | VideoWriter with variable FPS thanks, well that will fill the gaps and may work. Curious if there any other approaches. |
2016-12-07 13:17:28 -0600 | received badge | ● Editor (source) |
2016-12-07 13:16:50 -0600 | asked a question | VideoWriter with variable FPS Hello, I've been struggling with this one for a very long time. I have a couple of IP camera's connected through a WIFI connection, what I would like to achieve is to record the stream of each of those cameras by using the VideoWriter class. An issue I have is that the FPS is depending on the WIFI connection. If the connection goes slower, the FPS defined in the constructor of the VideoWriter, does not match with the actual FPS retrieved. Is there anyone here who've found a workaround for this type of situations? The big issue is that the video is playing at different speeds. Thank you all for your help and advice. PS: please don't recommend sleep or blocking functions, this will not help. Cédric |
2016-02-15 08:59:47 -0600 | commented answer | Display IplImage in webbrowsers Got it working, i've splitted your write method in two functions calls, and implemented an vector which contains all the client id's. 1) Use select to check if some new clients have subscribed, and if so create an descriptor for them. 2) In the second method send an image to all the subscribed sockets. A crucial configration was the following: This causes the program to not exit when trying to write to a disconnected client. It now works in all browsers + VLC. However Chrome does a strange thing, it always disconnects the first connection and keeps the second connection. (this is fixed by the option mentioned above). |
2016-02-15 06:43:44 -0600 | commented answer | Display IplImage in webbrowsers Thanks, maybe you can contribute ;) |
2016-02-15 06:32:21 -0600 | commented answer | Display IplImage in webbrowsers PS: I also tried it with VLC, and the code doesn't work either. It only reacts on the first HTTP request, but blocks on the select afterwards. |
2016-02-15 06:28:57 -0600 | commented answer | Display IplImage in webbrowsers I don't have enough knowledge of sockets.. So don't think I can help you with this. I really want to integrate your code in my project https://kerberos.io |
2016-02-15 06:10:18 -0600 | commented answer | Display IplImage in webbrowsers Hello berak, i'm trying your code ons OSX Yosemite. However when opening the page (e.g. with Chrome) the page keeps loading. I did some small debugging and it looks like your code is never sending the image with header to the browser. |