-#!/usr/bin/env python
+#!/usr/bin/python2
from __future__ import division
import cookielib
import cgi
-import itertools
import json
from lxml import html
import os
urlopener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookiejar))
referrer = ""
-def urlopen(url):
+def urlopen(url, offset=None):
+ if url.startswith("//"):
+ url = "http:" + url
+
global referrer
req = urllib2.Request(url)
if referrer:
req.add_header("Referer", referrer)
referrer = url
+
req.add_header("User-Agent", USER_AGENT)
- return urlopener.open(req)
+
+ if offset:
+ req.add_header("Range", "bytes=%d-" % offset)
+
+ res = urlopener.open(req)
+
+ content_range = res.info().getheader("Content-Range")
+ if content_range:
+ tokens = content_range.split()
+ assert tokens[0] == "bytes"
+ start = int(tokens[1].split("-")[0])
+ assert start == offset
+ return res
def parse_url(url):
f = urlopen(url)
p2 = line.rfind(";")
if p1 >= 0 and p2 > 0:
return json.loads(line[p1+1:p2])
+ if "ytplayer.config =" in line:
+ p1 = line.find("ytplayer.config =")
+ p2 = line.rfind(";")
+ if p1 >= 0 and p2 > 0:
+ return json.loads(line[p1+18:p2])
if "'PLAYER_CONFIG': " in line:
p1 = line.find(":")
if p1 >= 0:
convert_from_old_itag(player_config)
return player_config
-def get_best_video(player_config):
- url_data = urlparse.parse_qs(player_config["args"]["url_encoded_fmt_stream_map"])
- url_data = itertools.izip_longest(
- url_data["url"],
- url_data["type"],
- url_data["quality"],
- url_data.get("sig", []),
+def extract_function(output, script, func_name):
+ p1 = script.find("function " + func_name + "(")
+ p2 = script.find("}", p1)
+ code = script[p1:p2+1]
+ output.append(code)
+ deps = re.findall(R"[^\.][= ]([\$0-9a-zA-Z]+)\(", code)
+ deps = set(deps)
+ deps.remove(func_name)
+ for dep in deps:
+ extract_function(output, script, dep)
+
+def decode_signature(js_url, s):
+ script = urlopen(js_url).read()
+ func_name = re.search(R"\b([a-zA-Z]+)\([a-zA-Z]+\.s\);", script).groups()[0]
+
+ codes = []
+ extract_function(codes, script, func_name)
+
+ p = subprocess.Popen(
+ "js",
+ shell=True,
+ close_fds=True,
+ stdin=subprocess.PIPE,
+ stdout=subprocess.PIPE
)
+ for code in codes:
+ p.stdin.write(code + "\n")
+ p.stdin.write("console.log(%s('%s'));\n" % (func_name, s))
+ p.stdin.close()
+
+ signature = p.stdout.read().strip()
+ if p.wait() != 0:
+ raise Exception("js failed to execute: %d" % p.returncode)
+
+ return signature
+
+def get_best_video(player_config):
+ url_data_list = player_config["args"]["url_encoded_fmt_stream_map"].split(",")
+ js_url = player_config["assets"]["js"]
+
best_url = None
best_quality = None
best_extension = None
- for video_url, mimetype, quality, signature in url_data:
- mimetype = mimetype.split(";")[0]
+ for url_data in url_data_list:
+ url_data = urlparse.parse_qs(url_data)
+ mimetype = url_data["type"][0].split(";")[0]
+ quality = url_data["quality"][0]
+
+ if quality not in QUALITIES:
+ continue
if mimetype not in MIMETYPES:
continue
+
extension = MIMETYPES[mimetype]
- quality = QUALITIES.get(quality.split(",")[0], -1)
- if best_quality is None or quality > best_quality:
- if signature:
- video_url = append_to_qs(video_url, {"signature": signature})
- best_url = video_url
- best_quality = quality
- best_extension = extension
+ quality = QUALITIES.get(quality, -1)
+
+ if best_quality is not None and quality < best_quality:
+ continue
+
+ video_url = url_data["url"][0]
+ if "sig" in url_data:
+ signature = url_data["sig"][0]
+ else:
+ signature = decode_signature(js_url, url_data["s"][0])
+ video_url = append_to_qs(video_url, {"signature": signature})
+
+ best_url = video_url
+ best_quality = quality
+ best_extension = extension
return best_url, best_extension
)
return
-def copy_with_progress(total_size, infile, outfile):
- def pp_size(size):
- suffixes = ["", "KiB", "MiB", "GiB"]
- for i, suffix in enumerate(suffixes):
- if size < 1024:
- break
- size /= 1024
- return "%.2f %s" % (size, suffix)
+def pp_size(size):
+ suffixes = ["", "KiB", "MiB", "GiB"]
+ for i, suffix in enumerate(suffixes):
+ if size < 1024:
+ break
+ size /= 1024
+ return "%.2f %s" % (size, suffix)
+
+def copy_with_progress(content_length, infile, outfile):
+ def print_status():
+ rate = 0
+ if now != last_ts:
+ rate = last_bytes_read / (now - last_ts)
+ sys.stdout.write("\33[2K\r")
+ sys.stdout.write("%s / %s (%s/sec)" % (
+ pp_size(bytes_read),
+ pp_size(content_length),
+ pp_size(rate),
+ ))
+ sys.stdout.flush()
- start_ts = time.time()
last_ts = 0
+ last_bytes_read = 0
bytes_read = 0
while True:
now = time.time()
if now - last_ts > 0.5:
+ print_status()
last_ts = now
- sys.stdout.write("\33[2K\r")
- sys.stdout.write("%s / %s (%s/sec)" % (
- pp_size(bytes_read),
- pp_size(total_size),
- pp_size(bytes_read / (now - start_ts)),
- ))
- sys.stdout.flush()
+ last_bytes_read = 0
buf = infile.read(32768)
if not buf:
break
outfile.write(buf)
+ last_bytes_read += len(buf)
bytes_read += len(buf)
+ # Newline at the end
+ print_status()
+ print
+
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)
- video_data = urlopen(video_url)
- outfile = open(filename, "w")
- total_size = int(video_data.info().getheader("Content-Length"))
print "Downloading", filename.encode("utf-8")
- copy_with_progress(total_size, video_data, outfile)
- video_data.close()
+
+ outfile = open(filename, "a")
+ offset = outfile.tell()
+ if offset > 0:
+ print "Resuming download from", pp_size(offset)
+ total_size = None
+
+ while True:
+ try:
+ video_data = urlopen(video_url, offset)
+ except urllib2.HTTPError, e:
+ if e.code == 416:
+ print "File is complete!"
+ break
+ else:
+ raise
+
+ content_length = int(video_data.info().getheader("Content-Length"))
+ if total_size is None:
+ total_size = content_length
+
+ try:
+ copy_with_progress(content_length, video_data, outfile)
+ except IOError, e:
+ print
+
+ video_data.close()
+ if outfile.tell() != total_size:
+ old_offset = offset
+ offset = outfile.tell()
+ if old_offset == offset:
+ time.sleep(1)
+ print "Restarting download from", pp_size(offset)
+ else:
+ break
+
outfile.close()
if __name__ == "__main__":
- resource.setrlimit(resource.RLIMIT_AS, (MAX_MEMORY_BYTES, MAX_MEMORY_BYTES))
+### resource.setrlimit(resource.RLIMIT_AS, (MAX_MEMORY_BYTES, MAX_MEMORY_BYTES))
if os.environ.has_key("SCRIPT_NAME"):
cgimain()
else: