10 compat_urllib_request,
19 class FileDownloader(object):
20 """File Downloader class.
22 File downloader objects are the ones responsible of downloading the
23 actual video file and writing it to disk.
25 File downloaders accept a lot of parameters. In order not to saturate
26 the object constructor with arguments, it receives a dictionary of
31 verbose: Print additional info to stdout.
32 quiet: Do not print messages to stdout.
33 ratelimit: Download speed limit, in bytes/sec.
34 retries: Number of times to retry for HTTP error 5xx
35 buffersize: Size of download buffer in bytes.
36 noresizebuffer: Do not automatically resize the download buffer.
37 continuedl: Try to continue downloads if possible.
38 noprogress: Do not print the progress bar.
39 logtostderr: Log messages to stderr instead of stdout.
40 consoletitle: Display progress in console window's titlebar.
41 nopart: Do not use temporary .part files.
42 updatetime: Use the Last-modified header to set output file timestamps.
43 test: Download only first bytes to test the downloader.
44 min_filesize: Skip files smaller than this size
45 max_filesize: Skip files larger than this size
50 def __init__(self, ydl, params):
51 """Create a FileDownloader object with the given options."""
53 self._progress_hooks = []
57 def format_bytes(bytes):
60 if type(bytes) is str:
65 exponent = int(math.log(bytes, 1024.0))
66 suffix = ['B','KiB','MiB','GiB','TiB','PiB','EiB','ZiB','YiB'][exponent]
67 converted = float(bytes) / float(1024 ** exponent)
68 return '%.2f%s' % (converted, suffix)
71 def format_seconds(seconds):
72 (mins, secs) = divmod(seconds, 60)
73 (hours, mins) = divmod(mins, 60)
77 return '%02d:%02d' % (mins, secs)
79 return '%02d:%02d:%02d' % (hours, mins, secs)
82 def calc_percent(byte_counter, data_len):
85 return float(byte_counter) / float(data_len) * 100.0
88 def format_percent(percent):
91 return '%6s' % ('%3.1f%%' % percent)
94 def calc_eta(start, now, total, current):
98 if current == 0 or dif < 0.001: # One millisecond
100 rate = float(current) / dif
101 return int((float(total) - float(current)) / rate)
107 return FileDownloader.format_seconds(eta)
110 def calc_speed(start, now, bytes):
112 if bytes == 0 or dif < 0.001: # One millisecond
114 return float(bytes) / dif
117 def format_speed(speed):
119 return '%10s' % '---b/s'
120 return '%10s' % ('%s/s' % FileDownloader.format_bytes(speed))
123 def best_block_size(elapsed_time, bytes):
124 new_min = max(bytes / 2.0, 1.0)
125 new_max = min(max(bytes * 2.0, 1.0), 4194304) # Do not surpass 4 MB
126 if elapsed_time < 0.001:
128 rate = bytes / elapsed_time
136 def parse_bytes(bytestr):
137 """Parse a string indicating a byte quantity into an integer."""
138 matchobj = re.match(r'(?i)^(\d+(?:\.\d+)?)([kMGTPEZY]?)$', bytestr)
141 number = float(matchobj.group(1))
142 multiplier = 1024.0 ** 'bkmgtpezy'.index(matchobj.group(2).lower())
143 return int(round(number * multiplier))
145 def to_screen(self, *args, **kargs):
146 self.ydl.to_screen(*args, **kargs)
148 def to_stderr(self, message):
149 self.ydl.to_screen(message)
151 def to_console_title(self, message):
152 self.ydl.to_console_title(message)
154 def trouble(self, *args, **kargs):
155 self.ydl.trouble(*args, **kargs)
157 def report_warning(self, *args, **kargs):
158 self.ydl.report_warning(*args, **kargs)
160 def report_error(self, *args, **kargs):
161 self.ydl.report_error(*args, **kargs)
163 def slow_down(self, start_time, byte_counter):
164 """Sleep if the download speed is over the rate limit."""
165 rate_limit = self.params.get('ratelimit', None)
166 if rate_limit is None or byte_counter == 0:
169 elapsed = now - start_time
172 speed = float(byte_counter) / elapsed
173 if speed > rate_limit:
174 time.sleep((byte_counter - rate_limit * (now - start_time)) / rate_limit)
176 def temp_name(self, filename):
177 """Returns a temporary filename for the given filename."""
178 if self.params.get('nopart', False) or filename == u'-' or \
179 (os.path.exists(encodeFilename(filename)) and not os.path.isfile(encodeFilename(filename))):
181 return filename + u'.part'
183 def undo_temp_name(self, filename):
184 if filename.endswith(u'.part'):
185 return filename[:-len(u'.part')]
188 def try_rename(self, old_filename, new_filename):
190 if old_filename == new_filename:
192 os.rename(encodeFilename(old_filename), encodeFilename(new_filename))
193 except (IOError, OSError):
194 self.report_error(u'unable to rename file')
196 def try_utime(self, filename, last_modified_hdr):
197 """Try to set the last-modified time of the given file."""
198 if last_modified_hdr is None:
200 if not os.path.isfile(encodeFilename(filename)):
202 timestr = last_modified_hdr
205 filetime = timeconvert(timestr)
208 # Ignore obviously invalid dates
212 os.utime(filename, (time.time(), filetime))
217 def report_destination(self, filename):
218 """Report destination filename."""
219 self.to_screen(u'[download] Destination: ' + filename)
221 def report_progress(self, percent, data_len_str, speed, eta):
222 """Report download progress."""
223 if self.params.get('noprogress', False):
225 clear_line = (u'\x1b[K' if sys.stderr.isatty() and os.name != 'nt' else u'')
227 eta_str = self.format_eta(eta)
229 eta_str = 'Unknown ETA'
230 if percent is not None:
231 percent_str = self.format_percent(percent)
233 percent_str = 'Unknown %'
234 speed_str = self.format_speed(speed)
235 if self.params.get('progress_with_newline', False):
236 self.to_screen(u'[download] %s of %s at %s ETA %s' %
237 (percent_str, data_len_str, speed_str, eta_str))
239 self.to_screen(u'\r%s[download] %s of %s at %s ETA %s' %
240 (clear_line, percent_str, data_len_str, speed_str, eta_str), skip_eol=True)
241 self.to_console_title(u'youtube-dl - %s of %s at %s ETA %s' %
242 (percent_str.strip(), data_len_str.strip(), speed_str.strip(), eta_str.strip()))
244 def report_resuming_byte(self, resume_len):
245 """Report attempt to resume at given byte."""
246 self.to_screen(u'[download] Resuming download at byte %s' % resume_len)
248 def report_retry(self, count, retries):
249 """Report retry in case of HTTP error 5xx"""
250 self.to_screen(u'[download] Got server HTTP error. Retrying (attempt %d of %d)...' % (count, retries))
252 def report_file_already_downloaded(self, file_name):
253 """Report file has already been fully downloaded."""
255 self.to_screen(u'[download] %s has already been downloaded' % file_name)
256 except UnicodeEncodeError:
257 self.to_screen(u'[download] The file has already been downloaded')
259 def report_unable_to_resume(self):
260 """Report it was impossible to resume download."""
261 self.to_screen(u'[download] Unable to resume')
263 def report_finish(self, data_len_str, tot_time):
264 """Report download finished."""
265 if self.params.get('noprogress', False):
266 self.to_screen(u'[download] Download completed')
268 clear_line = (u'\x1b[K' if sys.stderr.isatty() and os.name != 'nt' else u'')
269 self.to_screen(u'\r%s[download] 100%% of %s in %s' %
270 (clear_line, data_len_str, self.format_seconds(tot_time)))
272 def _download_with_rtmpdump(self, filename, url, player_url, page_url, play_path, tc_url, live):
273 self.report_destination(filename)
274 tmpfilename = self.temp_name(filename)
275 test = self.params.get('test', False)
277 # Check for rtmpdump first
279 subprocess.call(['rtmpdump', '-h'], stdout=(open(os.path.devnull, 'w')), stderr=subprocess.STDOUT)
280 except (OSError, IOError):
281 self.report_error(u'RTMP download detected but "rtmpdump" could not be run')
283 verbosity_option = '--verbose' if self.params.get('verbose', False) else '--quiet'
285 # Download using rtmpdump. rtmpdump returns exit code 2 when
286 # the connection was interrumpted and resuming appears to be
287 # possible. This is part of rtmpdump's normal usage, AFAIK.
288 basic_args = ['rtmpdump', verbosity_option, '-r', url, '-o', tmpfilename]
289 if player_url is not None:
290 basic_args += ['--swfVfy', player_url]
291 if page_url is not None:
292 basic_args += ['--pageUrl', page_url]
293 if play_path is not None:
294 basic_args += ['--playpath', play_path]
295 if tc_url is not None:
296 basic_args += ['--tcUrl', url]
298 basic_args += ['--stop', '1']
300 basic_args += ['--live']
301 args = basic_args + [[], ['--resume', '--skip', '1']][self.params.get('continuedl', False)]
302 if self.params.get('verbose', False):
305 shell_quote = lambda args: ' '.join(map(pipes.quote, args))
308 self.to_screen(u'[debug] rtmpdump command line: ' + shell_quote(args))
309 retval = subprocess.call(args)
310 while (retval == 2 or retval == 1) and not test:
311 prevsize = os.path.getsize(encodeFilename(tmpfilename))
312 self.to_screen(u'\r[rtmpdump] %s bytes' % prevsize, skip_eol=True)
313 time.sleep(5.0) # This seems to be needed
314 retval = subprocess.call(basic_args + ['-e'] + [[], ['-k', '1']][retval == 1])
315 cursize = os.path.getsize(encodeFilename(tmpfilename))
316 if prevsize == cursize and retval == 1:
318 # Some rtmp streams seem abort after ~ 99.8%. Don't complain for those
319 if prevsize == cursize and retval == 2 and cursize > 1024:
320 self.to_screen(u'\r[rtmpdump] Could not download the whole video. This can happen for some advertisements.')
323 if retval == 0 or (test and retval == 2):
324 fsize = os.path.getsize(encodeFilename(tmpfilename))
325 self.to_screen(u'\r[rtmpdump] %s bytes' % fsize)
326 self.try_rename(tmpfilename, filename)
327 self._hook_progress({
328 'downloaded_bytes': fsize,
329 'total_bytes': fsize,
330 'filename': filename,
331 'status': 'finished',
335 self.to_stderr(u"\n")
336 self.report_error(u'rtmpdump exited with code %d' % retval)
339 def _download_with_mplayer(self, filename, url):
340 self.report_destination(filename)
341 tmpfilename = self.temp_name(filename)
343 args = ['mplayer', '-really-quiet', '-vo', 'null', '-vc', 'dummy', '-dumpstream', '-dumpfile', tmpfilename, url]
344 # Check for mplayer first
346 subprocess.call(['mplayer', '-h'], stdout=(open(os.path.devnull, 'w')), stderr=subprocess.STDOUT)
347 except (OSError, IOError):
348 self.report_error(u'MMS or RTSP download detected but "%s" could not be run' % args[0] )
351 # Download using mplayer.
352 retval = subprocess.call(args)
354 fsize = os.path.getsize(encodeFilename(tmpfilename))
355 self.to_screen(u'\r[%s] %s bytes' % (args[0], fsize))
356 self.try_rename(tmpfilename, filename)
357 self._hook_progress({
358 'downloaded_bytes': fsize,
359 'total_bytes': fsize,
360 'filename': filename,
361 'status': 'finished',
365 self.to_stderr(u"\n")
366 self.report_error(u'mplayer exited with code %d' % retval)
369 def _download_m3u8_with_ffmpeg(self, filename, url):
370 self.report_destination(filename)
371 tmpfilename = self.temp_name(filename)
373 args = ['-y', '-i', url, '-f', 'mp4', '-c', 'copy',
374 '-bsf:a', 'aac_adtstoasc', tmpfilename]
376 for program in ['avconv', 'ffmpeg']:
378 subprocess.call([program, '-version'], stdout=(open(os.path.devnull, 'w')), stderr=subprocess.STDOUT)
380 except (OSError, IOError):
383 self.report_error(u'm3u8 download detected but ffmpeg or avconv could not be found')
384 cmd = [program] + args
386 retval = subprocess.call(cmd)
388 fsize = os.path.getsize(encodeFilename(tmpfilename))
389 self.to_screen(u'\r[%s] %s bytes' % (args[0], fsize))
390 self.try_rename(tmpfilename, filename)
391 self._hook_progress({
392 'downloaded_bytes': fsize,
393 'total_bytes': fsize,
394 'filename': filename,
395 'status': 'finished',
399 self.to_stderr(u"\n")
400 self.report_error(u'ffmpeg exited with code %d' % retval)
404 def _do_download(self, filename, info_dict):
405 url = info_dict['url']
407 # Check file already present
408 if self.params.get('continuedl', False) and os.path.isfile(encodeFilename(filename)) and not self.params.get('nopart', False):
409 self.report_file_already_downloaded(filename)
410 self._hook_progress({
411 'filename': filename,
412 'status': 'finished',
413 'total_bytes': os.path.getsize(encodeFilename(filename)),
417 # Attempt to download using rtmpdump
418 if url.startswith('rtmp'):
419 return self._download_with_rtmpdump(filename, url,
420 info_dict.get('player_url', None),
421 info_dict.get('page_url', None),
422 info_dict.get('play_path', None),
423 info_dict.get('tc_url', None),
424 info_dict.get('rtmp_live', False))
426 # Attempt to download using mplayer
427 if url.startswith('mms') or url.startswith('rtsp'):
428 return self._download_with_mplayer(filename, url)
430 # m3u8 manifest are downloaded with ffmpeg
431 if determine_ext(url) == u'm3u8':
432 return self._download_m3u8_with_ffmpeg(filename, url)
434 tmpfilename = self.temp_name(filename)
437 # Do not include the Accept-Encoding header
438 headers = {'Youtubedl-no-compression': 'True'}
439 if 'user_agent' in info_dict:
440 headers['Youtubedl-user-agent'] = info_dict['user_agent']
441 basic_request = compat_urllib_request.Request(url, None, headers)
442 request = compat_urllib_request.Request(url, None, headers)
444 if self.params.get('test', False):
445 request.add_header('Range','bytes=0-10240')
447 # Establish possible resume length
448 if os.path.isfile(encodeFilename(tmpfilename)):
449 resume_len = os.path.getsize(encodeFilename(tmpfilename))
455 if self.params.get('continuedl', False):
456 self.report_resuming_byte(resume_len)
457 request.add_header('Range','bytes=%d-' % resume_len)
463 retries = self.params.get('retries', 0)
464 while count <= retries:
465 # Establish connection
467 if count == 0 and 'urlhandle' in info_dict:
468 data = info_dict['urlhandle']
469 data = compat_urllib_request.urlopen(request)
471 except (compat_urllib_error.HTTPError, ) as err:
472 if (err.code < 500 or err.code >= 600) and err.code != 416:
473 # Unexpected HTTP error
475 elif err.code == 416:
476 # Unable to resume (requested range not satisfiable)
478 # Open the connection again without the range header
479 data = compat_urllib_request.urlopen(basic_request)
480 content_length = data.info()['Content-Length']
481 except (compat_urllib_error.HTTPError, ) as err:
482 if err.code < 500 or err.code >= 600:
485 # Examine the reported length
486 if (content_length is not None and
487 (resume_len - 100 < int(content_length) < resume_len + 100)):
488 # The file had already been fully downloaded.
489 # Explanation to the above condition: in issue #175 it was revealed that
490 # YouTube sometimes adds or removes a few bytes from the end of the file,
491 # changing the file size slightly and causing problems for some users. So
492 # I decided to implement a suggested change and consider the file
493 # completely downloaded if the file size differs less than 100 bytes from
494 # the one in the hard drive.
495 self.report_file_already_downloaded(filename)
496 self.try_rename(tmpfilename, filename)
497 self._hook_progress({
498 'filename': filename,
499 'status': 'finished',
503 # The length does not match, we start the download over
504 self.report_unable_to_resume()
510 self.report_retry(count, retries)
513 self.report_error(u'giving up after %s retries' % retries)
516 data_len = data.info().get('Content-length', None)
517 if data_len is not None:
518 data_len = int(data_len) + resume_len
519 min_data_len = self.params.get("min_filesize", None)
520 max_data_len = self.params.get("max_filesize", None)
521 if min_data_len is not None and data_len < min_data_len:
522 self.to_screen(u'\r[download] File is smaller than min-filesize (%s bytes < %s bytes). Aborting.' % (data_len, min_data_len))
524 if max_data_len is not None and data_len > max_data_len:
525 self.to_screen(u'\r[download] File is larger than max-filesize (%s bytes > %s bytes). Aborting.' % (data_len, max_data_len))
528 data_len_str = self.format_bytes(data_len)
529 byte_counter = 0 + resume_len
530 block_size = self.params.get('buffersize', 1024)
535 data_block = data.read(block_size)
537 if len(data_block) == 0:
539 byte_counter += len(data_block)
541 # Open file just in time
544 (stream, tmpfilename) = sanitize_open(tmpfilename, open_mode)
545 assert stream is not None
546 filename = self.undo_temp_name(tmpfilename)
547 self.report_destination(filename)
548 except (OSError, IOError) as err:
549 self.report_error(u'unable to open for writing: %s' % str(err))
552 stream.write(data_block)
553 except (IOError, OSError) as err:
554 self.to_stderr(u"\n")
555 self.report_error(u'unable to write data: %s' % str(err))
557 if not self.params.get('noresizebuffer', False):
558 block_size = self.best_block_size(after - before, len(data_block))
561 speed = self.calc_speed(start, time.time(), byte_counter - resume_len)
565 percent = self.calc_percent(byte_counter, data_len)
566 eta = self.calc_eta(start, time.time(), data_len - resume_len, byte_counter - resume_len)
567 self.report_progress(percent, data_len_str, speed, eta)
569 self._hook_progress({
570 'downloaded_bytes': byte_counter,
571 'total_bytes': data_len,
572 'tmpfilename': tmpfilename,
573 'filename': filename,
574 'status': 'downloading',
580 self.slow_down(start, byte_counter - resume_len)
583 self.to_stderr(u"\n")
584 self.report_error(u'Did not get any data blocks')
587 self.report_finish(data_len_str, (time.time() - start))
588 if data_len is not None and byte_counter != data_len:
589 raise ContentTooShortError(byte_counter, int(data_len))
590 self.try_rename(tmpfilename, filename)
592 # Update file modification time
593 if self.params.get('updatetime', True):
594 info_dict['filetime'] = self.try_utime(filename, data.info().get('last-modified', None))
596 self._hook_progress({
597 'downloaded_bytes': byte_counter,
598 'total_bytes': byte_counter,
599 'filename': filename,
600 'status': 'finished',
605 def _hook_progress(self, status):
606 for ph in self._progress_hooks:
609 def add_progress_hook(self, ph):
610 """ ph gets called on download progress, with a dictionary with the entries
611 * filename: The final filename
612 * status: One of "downloading" and "finished"
614 It can also have some of the following entries:
616 * downloaded_bytes: Bytes on disks
617 * total_bytes: Total bytes, None if unknown
618 * tmpfilename: The filename we're currently writing to
619 * eta: The estimated time in seconds, None if unknown
620 * speed: The download speed in bytes/second, None if unknown
622 Hooks are guaranteed to be called at least once (with status "finished")
623 if the download is successful.
625 self._progress_hooks.append(ph)