Maybe that‘s the main reason troubling you for rather a long time. As Zhang said,18-22 frame per second is enough for us to use. That's really a good news for us all.
2011/7/14 hz nan <[email protected]> > Hi,all > In Linux, the rate of camera capture is different for diffrent camera.For > Logitech, > it need 120ms to capture one frame, it means that it can only capture 8 > frames > one second. But for a good camera, it can capture 18-22frame one second.The > time is not used in the ffmpeg but used in the system function "iotcl" > equate > with > camera read. Because opencvalso use V4L, so the opencv speed is also > improve > use good camera. > And because in Linux, system can't reopen camera, I can't use multithread > to improve the capture rate. > > nan hongzhen > -- *If the dream is big enough,the facts don't count.*
