测试文件（yuv后缀的文件不能上传，改为txt后缀）
    test.txt

    1. import cv2
    2. import numpy as np  
    4. def yuv_import(filename,dims,numfrm,startfrm):  
    5.     fp=open(filename,'rb')  
    6.     blk_size = np.prod(dims) *3/2  
    7.     fp.seek(int(blk_size*startfrm),0)  
    8.     Y=[]  
    9.     U=[]  
    10.     V=[]  
    12.     d00=dims[0]//2  
    13.     d01=dims[1]//2  
    15.     for _ in range(numfrm):  
    16.         Yt=np.zeros((dims[0],dims[1]),np.uint8,'C')  
    17.         Ut=np.zeros((d00,d01),np.uint8,'C')  
    18.         Vt=np.zeros((d00,d01),np.uint8,'C') 
    19.         for m in range(dims[0]):  
    20.             for n in range(dims[1]):  
    21.                 Yt[m,n]=ord(fp.read(1))  
    22.         for m in range(d00):  
    23.             for n in range(d01):  
    24.                 Ut[m,n]=ord(fp.read(1))  
    25.         for m in range(d00):  
    26.             for n in range(d01):  
    27.                 Vt[m,n]=ord(fp.read(1))  
    28.         Y.append(Yt)
    29.         U=U+[Ut]  
    30.         V=V+[Vt]  
    31.     fp.close() 
    32.     return (Y,U,V)  
    34. if __name__ == '__main__':
    35.     width=128
    36.     height=128
    37.     frame_num = 150
    38.     data=yuv_import('E:\\linux_share\\out.yuv',(height,width),frame_num,0)  
    39.     YY=data[0]
    40.     for i in range(frame_num):
    41.         cv2.imshow("sohow",YY[i])
    42.         cv2.waitKey(30)