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Pafy – Getting File Size of Stream
  • Last Updated : 20 Jul, 2020

In this article we will see how we can get file size given youtube video stream in pafy. Pafy is a python library to download YouTube content and retrieve metadata. Pafy object is the object which contains all the information about the given video. Stream is basically available resolution of video is available on youtube. File size is in the form of bytes normally the better the resolution the greater will be the file size.

We can get the pafy object with the help of new method and with the help of allstreams attribute we can get the all the streams available for the video, below is the command to get the pafy object for given video

video = pafy.new(url)
streams = video.allstreams

The video url should exist on youtube as it get the information of those videos which are present on the youtube. YouTube is an American online video-sharing platform.

In order to do this we use get_filesize method with the stream object of video

Syntax : stream.get_filesize()



Argument : It takes no argument

Return : It returns integer

Below is the implementation




# importing pafy
import pafy 
    
# url of video 
url = "https://www.youtube.com / watch?v = vG2PNdI8axo"
    
# getting video
video = pafy.new(url) 
  
# getting all the available streams
streams = video.allstreams
  
# selecting one stream
stream = streams[1]
# getting file size of stream
value = stream.get_filesize()
  
# printing the value
print("File Size in bytes: " + str(value))

Output :

File Size in bytes: 554085

Another example




# importing pafy
import pafy 
    
# url of video 
url = "https://www.youtube.com / watch?v = i6rhnSoK_gc"
    
# getting video
video = pafy.new(url) 
  
# getting all the available streams
streams = video.allstreams
  
# selecting one stream
stream = streams[4]
  
# getting file size of stream
value = stream.get_filesize()
  
# printing the value
print("File Size in bytes: " + str(value))

Output :

File Size in bytes: 8125774

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