python opencv图片编码为h264文件

python部分

#!/usr/bin/env Python
# coding=utf-8
from ctypes import *


from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
import time
import numpy as np
import cv2
import struct

import datetime


from numba import jit
import os
cam_dict={}


class CamInfo:
    def __init__(self, cam_no=0,deviceid="default",cam_name="default"):
        self.cam_no = cam_no
        self.deviceid = deviceid
        self.cam_name = cam_name


@jit
def trans(data,size,height,width):
    bbb = string_at(data,size)
    nparr = np.fromstring(bbb, np.uint8)
    r = nparr.reshape(height,width, 3)
    return r
def str2char_p(str_v):
    pStr = c_char_p( )
    pStr.value = str_v
    return pStr


def callb_