[Python] pafy로 Youtube 영상 처리

pafy

https://github.com/mps-youtube/pafy

GitHub - mps-youtube/pafy: Python library to download YouTube content and retrieve metadata

 

How to use ?

다음과 같이 instance를 선언한 뒤 필요한 정보를 얻을 수 있다.

import pafy

url = "https://www.youtube.com/watch?v=bMt47wvK6u0"
video = pafy.new(url)

print(video.title)
# 'Richard Jones: Introduction to game programming - PyCon 2014'

print(video.rating)
# 5.0

print(video.viewcount, video.author, video.length)
# (1916, 'PyCon 2014', 10394)

print(video.duration, video.likes, video.dislikes)
# ('02:53:14', 25, 0)

print(video.description)
# Speaker: Richard Jones
# This tutorial will walk the attendees through development of a simple game using PyGame with time left over for some experimentation and exploration of different types of games.
# Slides can be found at: https://speakerdeck.com/pycon2014 and https://github.com/PyCon/2014-slides

 

다음과 같이 cv2를 사용하여 영상 처리에 사용할 수 있다.

import cv2

video = video.getbest(preftype="mp4")

cap = cv2.VideoCapture(video.url) 
 
# get video size
frameWidth = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
frameHeight = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
 
# get video fps
frameRate = int(cap.get(cv2.CAP_PROP_FPS))

 

Error

1. raise RegexNotFoundError('Unable to extract %s' % _name)

youtube_dl.utils.RegexNotFoundError: Unable to extract uploader id; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see https://yt-dl.org/update on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

https://github.com/ytdl-org/youtube-dl/issues/31530#issuecomment-1433936907

[YouTube] Unable to extract uploader id · Issue #31530 · ytdl-org/youtube-dl

Solution

[python이 설치된 path]/[python 버전]/libs/site-packages/youtube_dl/youtube.py 중 다음 line을 수정

# line 1794 
# before
'uploader_id': self._search_regex(r'/(?:channel|user)/([^/?&#]+)', owner_profile_url, 'uploader id') if owner_profile_url else None,
# after
'uploader_id': self._search_regex(r'/(?:channel|user)/([^/?&#]+)', owner_profile_url, 'uploader id', fatal=False) if owner_profile_url else None,

 

2. KeyError: 'like_count'

    self._likes = self._ydl_info['like_count']
KeyError: 'like_count'

https://github.com/mps-youtube/pafy/pull/288#issuecomment-812841914

Get video info even if no likes/dislikes exist by noembryo · Pull Request #288 · mps-youtube/pafy

Solution

[python이 설치된 path]/[python 버전]/libs/site-packages/pafy/backend_youtube_dl.py 중 다음 line을 수정

# line 53 and 54
# before
self._likes = self._ydl_info['like_count']
self._dislikes = self._ydl_info['dislike_count']
# after
self._likes = self._ydl_info.get('like_count',0)
self._dislikes = self._ydl_info.get('dislike_count',0)