I’m having trouble retrieving the YouTube video automatically. Here’s the code. The problem is the last part. download = urllib.request.urlopen(download_url).read()
# YouTube video download script
# 10n1z3d[at]w[dot]cn
import urllib.request
import sys
print("n--------------------------")
print (" YouTube Video Downloader")
print ("--------------------------n")
try:
video_url = sys.argv[1]
except:
video_url = input('[+] Enter video URL: ')
print("[+] Connecting...")
try:
if(video_url.endswith('&feature=related')):
video_id = video_url.split('www.youtube.com/watch?v=')[1].split('&feature=related')[0]
elif(video_url.endswith('&feature=dir')):
video_id = video_url.split('www.youtube.com/watch?v=')[1].split('&feature=dir')[0]
elif(video_url.endswith('&feature=fvst')):
video_id = video_url.split('www.youtube.com/watch?v=')[1].split('&feature=fvst')[0]
elif(video_url.endswith('&feature=channel_page')):
video_id = video_url.split('www.youtube.com/watch?v=')[1].split('&feature=channel_page')[0]
else:
video_id = video_url.split('www.youtube.com/watch?v=')[1]
except:
print("[-] Invalid URL.")
exit(1)
print("[+] Parsing token...")
try:
url = str(urllib.request.urlopen('http://www.youtube.com/get_video_info?&video_id=' + video_id).read())
token_value = url.split('video_id=' + video_id + '&token=')[1].split('&thumbnail_url')[0]
download_url = "http://www.youtube.com/get_video?video_id=" + video_id + "&t=" + token_value + "&fmt=18"
except:
url = str(urllib.request.urlopen('www.youtube.com/watch?v=' + video_id))
exit(1)
v_url = str(urllib.request.urlopen('http://' + video_url).read())
video_title = v_url.split('"rv.2.title": "')[1].split('", "rv.4.rating"')[0]
if '"' in video_title:
video_title = video_title.replace('"', '"')
elif '&' in video_title:
video_title = video_title.replace('&', '&')
print("[+] Downloading " + '"' + video_title + '"...')
try:
print(download_url)
file = open(video_title + '.mp4', 'wb')
download = urllib.request.urlopen(download_url).read()
print(download)
for line in download:
file.write(line)
file.close()
except:
print("[-] Error downloading. Quitting.")
exit(1)
print("n[+] Done. The video is saved to the current working directory(cwd).n")
There’s an error message (thanks Wooble):
Traceback (most recent call last):
File "C:/Python31/MyLib/DrawingBoard/youtube_download-.py", line 52, in <module>
download = urllib.request.urlopen(download_url).read()
File "C:Python31liburllibrequest.py", line 119, in urlopen
return _opener.open(url, data, timeout)
File "C:Python31liburllibrequest.py", line 353, in open
response = meth(req, response)
File "C:Python31liburllibrequest.py", line 465, in http_response
'http', request, response, code, msg, hdrs)
File "C:Python31liburllibrequest.py", line 385, in error
result = self._call_chain(*args)
File "C:Python31liburllibrequest.py", line 325, in _call_chain
result = func(*args)
File "C:Python31liburllibrequest.py", line 560, in http_error_302
return self.parent.open(new, timeout=req.timeout)
File "C:Python31liburllibrequest.py", line 353, in open
response = meth(req, response)
File "C:Python31liburllibrequest.py", line 465, in http_response
'http', request, response, code, msg, hdrs)
File "C:Python31liburllibrequest.py", line 391, in error
return self._call_chain(*args)
File "C:Python31liburllibrequest.py", line 325, in _call_chain
result = func(*args)
File "C:Python31liburllibrequest.py", line 473, in http_error_default
raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 403: Forbidden
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Answer
The code on the original question relies on several assumptions about the content of YouTube pages and URLs (expressed in constructs such as “url.split(‘something=’)[1]”) which may not always be true. I tested it and it might depend even on which related videos show on the page. You might have tripped on any of those specificities.
Here’s a cleaner version, which uses urllib to parse URLs and query strings, and which successfully downloads a video. I’ve removed some of the try/except which didn’t do much but exit, for clarity. Incidentally, it deals with Unicode video titles by removing non-ASCII characters from the filename to which the video is saved. It also takes any numbers of YouTube URLs and downloads them all. Finally, it masks its user-agent as Chrome for Mac (which is what I currently use).
#!/usr/bin/env python3
import sys
import urllib.request
from urllib.request import urlopen, FancyURLopener
from urllib.parse import urlparse, parse_qs, unquote
class UndercoverURLopener(FancyURLopener):
version = "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_8; en-US) AppleWebKit/533.2 (KHTML, like Gecko) Chrome/5.0.342.9 Safari/533.2"
urllib.request._urlopener = UndercoverURLopener()
def youtube_download(video_url):
video_id = parse_qs(urlparse(video_url).query)['v'][0]
url_data = urlopen('http://www.youtube.com/get_video_info?&video_id=' + video_id).read()
url_info = parse_qs(unquote(url_data.decode('utf-8')))
token_value = url_info['token'][0]
download_url = "http://www.youtube.com/get_video?video_id={0}&t={1}&fmt=18".format(
video_id, token_value)
video_title = url_info['title'][0] if 'title' in url_info else ''
# Unicode filenames are more trouble than they're worth
filename = video_title.encode('ascii', 'ignore').decode('ascii').replace("/", "-") + '.mp4'
print("t Downloading '{}' to '{}'...".format(video_title, filename))
try:
download = urlopen(download_url).read()
f = open(filename, 'wb')
f.write(download)
f.close()
except Exception as e:
print("t Download failed! {}".format(str(e)))
print("t Skipping...")
else:
print("t Done.")
def main():
print("n--------------------------")
print (" YouTube Video Downloader")
print ("--------------------------n")
try:
video_urls = sys.argv[1:]
except:
video_urls = input('Enter (space-separated) video URLs: ')
for u in video_urls:
youtube_download(u)
print("n Done.")
if __name__ == '__main__':
main()