phil_777's profile - activity

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2018-07-09 15:12:03 -0600	asked a question	Documentation about classifier XML file Documentation about classifier XML file Hello all, I'd like to get a deeper understanding about the structure of the cl
2015-07-13 09:25:32 -0600	commented question	FPS in openCV vs FPS in VLC and Quicktime Player I'm now using `double pos = m_capture.get(CV_CAP_PROP_POS_MSEC);` and it is accurate enough for testing. Later I will do everything in real-time with streamed video and sensor data, so I won't have this problem any more.
2015-07-13 02:48:37 -0600	commented question	FPS in openCV vs FPS in VLC and Quicktime Player I want to merge sensor data from an Android device with recorded video data. I record the sensor values with timestamps and I have one point at the beginning where I can sync them with the video stream. If I have an exact framerate I can calculate the time that passes every frame. I'm just bewildered because I suggested a high precision with so many internal decimal places (29.9167), but I think the framerate is wrong.
2015-07-10 10:27:09 -0600	asked a question	FPS in openCV vs FPS in VLC and Quicktime Player Hello, I am using openCV 2.4.11 for video analysing. I need a very precise framerate because I want to sync it with other data. When I use `double fps = m_capture.get(CV_CAP_PROP_FPS);` I get a framerate of 29.9167 FPS. But if I check the framerate in video players I get 28.45 FPS (Qucktime Player) and 28.447906 FPS (VLC). Windows shows 28 FPS. Which framerate is correct? Why does openCV get another framerate than the video players and windows which all seem to get the same just with different accuracies? I also consider using `double pos = m_capture.get(CV_CAP_PROP_POS_MSEC);`. Is this reliable? I would be glad if someone helped me with this issue.