libvlc获取一帧_使用python vlc 读取视频图像帧

直接上代码：

import vlc

import ctypes

import time

import sys

import cv2

import numpy

from PIL import Image

vlcInstance = vlc.Instance()

m = vlcInstance.media_new("rtsp://admin:admin@172.16.1.60:554/h264/ch1/main/av_stream")

mp = vlc.libvlc_media_player_new_from_media(m)

VIDEOWIDTH = 1920

VIDEOHEIGHT = 1080

size = VIDEOWIDTH * VIDEOHEIGHT * 4

buf = (ctypes.c_ubyte * size)()

buf_p = ctypes.cast(buf, ctypes.c_void_p)

VideoLockCb = ctypes.CFUNCTYPE(ctypes.c_void_p, ctypes.c_void_p, ctypes.POINTER(ctypes.c_void_p))

@VideoLockCb

def _lockcb(opaque, planes):

#print("lock", file=sys.stderr)

planes[0] = buf_p

@vlc.CallbackDecorators.VideoDisplayCb

def _display(opaque, picture):

img