下载具有字节范围的视频 python pycurl

Question

大家好，我正在尝试将视频下载为两段或更多段。所以我为此编写了程序。它像字节时钟一样完美地工作，但是当我从中间点开始下载电影时出现问题（可播放）但另一半不起作用：D，为什么我不明白它可以修复吗？我现在将提供程序源代码，你可以玩

import pycurl
import time
from threading import Thread
global url
percent = 1000
total = 0
downloaded = 0

def run():
    c = pycurl.Curl()
    c.setopt(pycurl.URL,"http://some video link here.mp4")
    fp= open("just file output name here.mp4", "wb")
    c.setopt(pycurl.WRITEDATA, fp)
    #range metter 1 megabyte is 1048576 byte just for knowladge
    c.setopt(c.RANGE, '5242880-52428800') 
    c.setopt(c.NOPROGRESS, 0)
    c.setopt(c.PROGRESSFUNCTION, progress)
    c.setopt(pycurl.FOLLOWLOCATION, 0)
    print("starting download,happy waiting..")
    c.perform()
    

def progress(download_t, download_d, upload_t, upload_d):
        global percent
        global total
        global downloaded
        
        
        percent = (download_d+0.00000000001)/(download_t+0.000000000001)*100
        total =  (download_t/1048576) 
        downloaded = (download_d/1048576)
def main():
    
    
   

        while percent != 101:
            if percent != 1000:
                
                
                
                
                    try:
                        print ("downloaded",round(percent),"%","downloaded",round(downloaded),"from",round(total))
                        if percent == 100:
                            print("")
                            print("Download complete:")
                            break
                        time.sleep(2) 

                

                    except:
                        print("unknown error")




if __name__ == "__main__":
 
 t1 = Thread(target=run)
 t1.start()
 t2 = Thread(target=main)
 t2.start()






    

Answer 1

你必须合并两个文件，后半部分不会播放，因为文件没有媒体播放器的标题，标题将保留在文件的前半部分。