你只需要改變「v4l2-ctl」的輸入!例如,我使用Python我的覆盆子來捕獲的S-Video視頻流與OpenCV的:
import cv, os
print "Initializing video capture from /dev/video0 ..."
capture = cv.CaptureFromCAM(0)
cv.SetCaptureProperty(capture,cv.CV_CAP_PROP_FRAME_WIDTH, 720)
cv.SetCaptureProperty(capture,cv.CV_CAP_PROP_FRAME_HEIGHT, 576)
print "Configuring video capture (V4L2) ..."
os.system("v4l2-ctl -d /dev/video0 -i 5 -s 4 --set-fmt-video=width=720,height=576,pixelformat=4")
有了:
- -d:設備(在我的情況是/ dev/video0的)
- -i:輸入。我的Easycap(0 = CVBS0; 1 = CVBS1; 2 = CVBS2; 3 = CVBS3; 4 = CVBS4; 5 = S-VIDEO)
- -s:norm(0 = PAL_BGHIN; 1 = NTSC_N_443; 2 = PAL_Nc; 3 = NTSC_N; 4 = SECAM; 5 = NTSC_M; 6 = NTSC_M_JP; 7 = PAL_60; 8 = NTSC_443; 9 = PAL_M;)
我明白了。謝謝。 正如你所說,我用v4l2-clt設置輸入爲1(這是我的設備的複合輸入),如下所示: v4l2-ctl -d/dev/video1 -i 1 – user2155042 2013-07-31 23:50:54