Tip! Use this bookmarklet: YouTube Download to easily download videos. Right-click the link and add it to bookmarks, then when you're looking at a YouTube page select that bookmark from your browser's bookmarks menu to download the video straight away.
""".replace("{0}", msg).replace("{1}", url).replace("{2}", script_url) def parse_url(url): f = urllib.urlopen(url) doc = document_fromstring(f.read()) f.close() return doc def get_video_url(doc): unavailable = doc.xpath("//div[@id='unavailable-message']/text()") if unavailable: raise VideoUnavailable(unavailable[0].strip()) embed = doc.xpath("//embed")[0] flashvars = embed.attrib["flashvars"] flashvars = cgi.parse_qs(flashvars) fmt_url_map = {} for pair in flashvars["fmt_url_map"][0].split(","): key, value = pair.split("|") key = int(key) fmt_url_map[key] = value for fmt, extension in fmt_quality: try: video_url = fmt_url_map[fmt] break except KeyError: continue else: return None, None, None title = doc.xpath("/html/head/title/text()")[0] title = re.sub("\s+", " ", title.strip()) valid_chars = frozenset("-_.() abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789") filename = "".join(c for c in title.encode("ascii", "ignore") if c in valid_chars) filename += extension return video_url, filename def cgimain(): args = cgi.parse() try: url = args["url"][0] except: print_form(url="http://www.youtube.com/watch?v=FOOBAR") return try: doc = parse_url(url) video_url, filename = get_video_url(doc) data = urllib.urlopen(video_url) httpinfo = data.info() sys.stdout.write("Content-Disposition: attachment; filename=\"%s\"\r\n" % filename) sys.stdout.write("Content-Length: %s\r\n" % httpinfo.getheader("Content-Length")) sys.stdout.write("\r\n") shutil.copyfileobj(data, sys.stdout) data.close() except VideoUnavailable, e: print_form( url=url, msg="Sorry, there was an error: %s
" % cgi.escape(e.message) ) except Exception, e: print_form( url=url, msg="Sorry, there was an error. Check your URL?
" ) return def main(): try: url = sys.argv[1] except: print >>sys.stderr, "Usage: %s http://youtube.com/watch?v=FOOBAR" % sys.argv[0] sys.exit(1) doc = parse_url(url) video_url, filename = get_video_url(doc) data = urllib.urlopen(video_url) outfile = open(filename, "w") shutil.copyfileobj(data, outfile) data.close() outfile.close() if __name__ == "__main__": if os.environ.has_key("SCRIPT_NAME"): cgimain() else: main()