_ Git - youtube-dl/blob - youtube_dl/downloader/hls.py

   1 from __future__ import unicode_literals
   2
   3 import os
   4 import re
   5 import subprocess
   6
   7 from ..postprocessor.ffmpeg import FFmpegPostProcessor
   8 from .common import FileDownloader
   9 from ..utils import (
  10     compat_urlparse,
  11     compat_urllib_request,
  12     check_executable,
  13     encodeFilename,
  14 )
  15
  16
  17 class HlsFD(FileDownloader):
  18     def real_download(self, filename, info_dict):
  19         url = info_dict['url']
  20         self.report_destination(filename)
  21         tmpfilename = self.temp_name(filename)
  22
  23         args = [
  24             '-y', '-i', url, '-f', 'mp4', '-c', 'copy',
  25             '-bsf:a', 'aac_adtstoasc',
  26             encodeFilename(tmpfilename, for_subprocess=True)]
  27
  28         for program in ['avconv', 'ffmpeg']:
  29             if check_executable(program, ['-version']):
  30                 break
  31         else:
  32             self.report_error('m3u8 download detected but ffmpeg or avconv could not be found. Please install one.')
  33             return False
  34         cmd = [program] + args
  35
  36         ffpp = FFmpegPostProcessor(downloader=self)
  37         ffpp.check_version()
  38
  39         retval = subprocess.call(cmd)
  40         if retval == 0:
  41             fsize = os.path.getsize(encodeFilename(tmpfilename))
  42             self.to_screen('\r[%s] %s bytes' % (cmd[0], fsize))
  43             self.try_rename(tmpfilename, filename)
  44             self._hook_progress({
  45                 'downloaded_bytes': fsize,
  46                 'total_bytes': fsize,
  47                 'filename': filename,
  48                 'status': 'finished',
  49             })
  50             return True
  51         else:
  52             self.to_stderr('\n')
  53             self.report_error('%s exited with code %d' % (program, retval))
  54             return False
  55
  56
  57 class NativeHlsFD(FileDownloader):
  58     """ A more limited implementation that does not require ffmpeg """
  59
  60     def real_download(self, filename, info_dict):
  61         url = info_dict['url']
  62         self.report_destination(filename)
  63         tmpfilename = self.temp_name(filename)
  64
  65         self.to_screen(
  66             '[hlsnative] %s: Downloading m3u8 manifest' % info_dict['id'])
  67         data = self.ydl.urlopen(url).read()
  68         s = data.decode('utf-8', 'ignore')
  69         segment_urls = []
  70         for line in s.splitlines():
  71             line = line.strip()
  72             if line and not line.startswith('#'):
  73                 segment_url = (
  74                     line
  75                     if re.match(r'^https?://', line)
  76                     else compat_urlparse.urljoin(url, line))
  77                 segment_urls.append(segment_url)
  78
  79         is_test = self.params.get('test', False)
  80         remaining_bytes = self._TEST_FILE_SIZE if is_test else None
  81         byte_counter = 0
  82         with open(tmpfilename, 'wb') as outf:
  83             for i, segurl in enumerate(segment_urls):
  84                 self.to_screen(
  85                     '[hlsnative] %s: Downloading segment %d / %d' %
  86                     (info_dict['id'], i + 1, len(segment_urls)))
  87                 seg_req = compat_urllib_request.Request(segurl)
  88                 if remaining_bytes is not None:
  89                     seg_req.add_header('Range', 'bytes=0-%d' % (remaining_bytes - 1))
  90
  91                 segment = self.ydl.urlopen(seg_req).read()
  92                 if remaining_bytes is not None:
  93                     segment = segment[:remaining_bytes]
  94                     remaining_bytes -= len(segment)
  95                 outf.write(segment)
  96                 byte_counter += len(segment)
  97                 if remaining_bytes is not None and remaining_bytes <= 0:
  98                     break
  99
 100         self._hook_progress({
 101             'downloaded_bytes': byte_counter,
 102             'total_bytes': byte_counter,
 103             'filename': filename,
 104             'status': 'finished',
 105         })
 106         self.try_rename(tmpfilename, filename)
 107         return True