Experiment done, at HD 720 @ 30fps, before recording fps is stable, when I start with recording from dual mode Kinovea blocks, from that moment I can not stop recording or control any more Kinovea, I have to restart it trough Task manager. I done test at 800x600 @ 30 fps and there is no problem, fps is stable all time before and during recording. Joan, what you suggest?
16 2014-07-15 22:57:24
Re: Logitech C920 - Cameras speed (fps) unstable when using two webcams (27 replies, posted in Cameras and hardware)
17 2014-07-15 21:45:20
Re: Logitech C920 - Cameras speed (fps) unstable when using two webcams (27 replies, posted in Cameras and hardware)
Today tested cameras at 640x360 at 30 fps, they work like dream, no problem at all, but this is far away from real capabilities of these cameras. BTW, I'm using Toshiba Satellite C655 notebook with 4Gb of RAM and Dual Core processor at 2.2GHz AMD Athlon II P340.
18 2014-07-15 21:36:03
Re: Logitech C920 - Cameras speed (fps) unstable when using two webcams (27 replies, posted in Cameras and hardware)
Joan, when I open ''Manual connection'' button, in ''Type of camera'' there is only IP Camera, there is no ''Camera Simulator'', I have latest experimental version 0.8.22, do I need to install fresh new same version?
19 2014-07-15 09:48:38
Re: Logitech C920 - Cameras speed (fps) unstable when using two webcams (27 replies, posted in Cameras and hardware)
Joan, yes it seams that CPU usage is too high, when there is two Logitech c920 cams on CPU usage is almost 98%, even if machine is enough good 2.4 Ghz and 4gb of ram. I will test how it works with two different cameras. Also I have to check usb ports, seams that they are 2.0 but they act like 1.1
20 2014-07-14 10:38:49
Re: Logitech C920 - Cameras speed (fps) unstable when using two webcams (27 replies, posted in Cameras and hardware)
Decreased resolution at 800x600 at 30fps, and still there is present missing of some frames during simultaneous recording. Do you have any experience with Logitech web camera model C920?
21 2014-07-11 10:21:48
Topic: Logitech C920 - Cameras speed (fps) unstable when using two webcams (27 replies, posted in Cameras and hardware)
Hello Kinovea users,
Recently we started small project (so called ''Falcon eye'') for local Wikimedia (Serbia) and idea is to create kinograms (Diaporama) of various sport activities and sport movements. For this purpose we bought two Logitech C920 HD pro web cameras, we run Windows 7 64 bit operating system. At first use of cameras not possible at high resolution because of drives, when drivers are installed all went fine with one camera, recording runs smooth with resolution of 1024x768 at 30fps. Problem comes when we connect two cameras at the same time, we adjust both cameras at same resolution and fps (1024x768 at 30fps) but fps on both cameras ''goes up and down'', sometimes fps goes over 100 fps at one camera, when we record video (simultaneously record control) with Kinovea (beta 0.8.22) make sort of ''damaged'' video file, you can view it, this is not problem but in some moments video slows down, or speed up or you find some missing frames.
Do you have suggestion how to solve problem? Thanks in advance!
SDCS team