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   源码介绍

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基于python VLC实现rtsp网络视频流的接收和存储

# coding=gbk 
import os, time
# 设置VLC库路径，需在import vlc之前
os.environ['PYTHON_VLC_MODULE_PATH'] = "./vlc-3.0.16"
import vlc
import ctypes
import time
import sys
import cv2
import numpy
import datetime
#import PIL
from PIL import Image
 
vlcInstance = vlc.Instance()

# 记得换url,最好也和上面一样进行测试一下
url = "cc 00_00_02-00_01_03.mp4"
m = vlcInstance.media_new(url)
mp = vlc.libvlc_media_player_new_from_media(m)
 
# ***如果显示不完整，调整以下宽度和高度的值来适应不同分辨率的图像***
video_width = 1920
video_height = 1080
 
size = video_width * video_height * 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
 
#videosave
fps = 15
size = (video_width, video_height) 
#定义编码格式mpge-4 
fourcc = cv2.VideoWriter_fourcc('M', 'P', '4', '2') 
#定义视频文件输入对象 
now_begin = int(time.time())  



@vlc.CallbackDecorators.VideoDisplayCb
def _display(opaque, picture):
    now_fps_begin = int(round(1000*time.time()))
    img = Image.frombuffer("RGBA", (video_width, video_height), buf, "raw", "BGRA", 0, 1)
    opencv_image = cv2.cvtColor(numpy.array(img), cv2.COLOR_RGB2BGR)
    cv2.imshow('image', opencv_image)
    
    now_fps_end = int(round(1000*time.time()))
    fps_now = 60-now_fps_end now_fps_begin
    if fps_now>0:
        outVideo.write(opencv_image)
        cv2.waitKey(fps_now)
    #print(fps_now)

vlc.libvlc_video_set_callbacks(mp, _lockcb, None, _display, None)
mp.video_set_format("BGRA", video_width, video_height, video_width * 4)
now_begin1 = int(time.time()) 
time_Distance = 0
#转换为其他日期格式，如:"%Y-%m-%d %H:%M:%S"
timeArray = time.localtime(now_begin1)
otherStyleTime = time.strftime("%Y_%m_%d_%H_%M_%S", timeArray)
AVI = '.avi'
AVI_Name = otherStyleTime ".avi"
print(AVI_Name )
outVideo = cv2.VideoWriter(AVI_Name,fourcc,fps,size) 
while time_Distance<=60:
    mp.play()
    now_end = int(time.time())
    time_Distance = now_end - now_begin1
    #print(time_Distance)
    time.sleep(1)