Error Using contour value to play certain frame of video OpenCV-Python -

hi , thank stopping by,

you see, i'm trying use opencv's tracking blob x , y position of moving object in camera synced match equivalent frame in video.

so means if hand on left of screen positions video frame 1, , if on right it's frame 300, let's say. every time frame 250 reached, 1 added counter. after counter gets 20, changes video , uses y axis synced.

my problem when try make work, either part of video synced motion (from frame 1 30 let's say), or frames return , mmco error. here code:

contours of themoving objects:

 #loop on contours c in cnts:     global motion_frame_x     global motion_frame_y     global motioncounter      if len(cnts) != 0:          c = max(cnts, key = cv2.contourarea)         x_value = tuple(c[c[:, :, 0].argmax()][0])         y_value = tuple(c[c[:, :, 1].argmax()][0])          print 'x: ' , x_value[0], 'y: ', y_value[1]         print "counter: " , motioncounter         motion_frame_x = x_value[0] / 500.0         motion_frame_y = y_value[1] / 500.0              

that's counter:

#motion counter           if motion_frame_x >= 0.5 , motioncounter < 20:             motioncounter = motioncounter + 1             print motion_frame_x          elif motioncounter >= 20 ,  motion_frame_y >= 0.85:             motioncounter = motioncounter + 1             print motion_frame_y          elif motioncounter == 50:             break 

and video output:

 #video output                if motioncounter < 20:             cap = cv2.videocapture('vid1.mp4')             cap.set(1, round(motion_frame_x * 292, 1) / 24)         elif motioncounter >= 20 , motioncounter < 50:             cap= cv2.videocapture('vid2.mp4')             else:             cap= cv2.videocapture('vid3.mp4')                  ret, vid = cap.read()         color = cv2.cvtcolor(vid, cv2.color_bgr2rgb)         cv2.imshow('vid', color)          if cv2.waitkey(1) & 0xff == ord('q'):             break           rawcapture.truncate(0)      

if lower division on cap.set can see bit more of video still not entirely. , if put motion_frame_x in video doesnt move , gives me buffer error.

thank help!