_ 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 .common import FileDownloader
   8 from ..utils import (
   9     compat_urlparse,
  10     check_executable,
  11     encodeFilename,
  12 )
  13
  14
  15 class HlsFD(FileDownloader):
  16     def real_download(self, filename, info_dict):
  17         url = info_dict['url']
  18         self.report_destination(filename)
  19         tmpfilename = self.temp_name(filename)
  20
  21         args = [
  22             '-y', '-i', url, '-f', 'mp4', '-c', 'copy',
  23             '-bsf:a', 'aac_adtstoasc',
  24             encodeFilename(tmpfilename, for_subprocess=True)]
  25
  26         for program in ['avconv', 'ffmpeg']:
  27             if check_executable(program, ['-version']):
  28                 break
  29         else:
  30             self.report_error(u'm3u8 download detected but ffmpeg or avconv could not be found. Please install one.')
  31             return False
  32         cmd = [program] + args
  33
  34         retval = subprocess.call(cmd)
  35         if retval == 0:
  36             fsize = os.path.getsize(encodeFilename(tmpfilename))
  37             self.to_screen(u'\r[%s] %s bytes' % (cmd[0], fsize))
  38             self.try_rename(tmpfilename, filename)
  39             self._hook_progress({
  40                 'downloaded_bytes': fsize,
  41                 'total_bytes': fsize,
  42                 'filename': filename,
  43                 'status': 'finished',
  44             })
  45             return True
  46         else:
  47             self.to_stderr(u"\n")
  48             self.report_error(u'%s exited with code %d' % (program, retval))
  49             return False
  50
  51
  52 class NativeHlsFD(FileDownloader):
  53     """ A more limited implementation that does not require ffmpeg """
  54
  55     def real_download(self, filename, info_dict):
  56         url = info_dict['url']
  57         self.report_destination(filename)
  58         tmpfilename = self.temp_name(filename)
  59
  60         self.to_screen(
  61             '[hlsnative] %s: Downloading m3u8 manifest' % info_dict['id'])
  62         data = self.ydl.urlopen(url).read()
  63         s = data.decode('utf-8', 'ignore')
  64         segment_urls = []
  65         for line in s.splitlines():
  66             line = line.strip()
  67             if line and not line.startswith('#'):
  68                 segment_url = (
  69                     line
  70                     if re.match(r'^https?://', line)
  71                     else compat_urlparse.urljoin(url, line))
  72                 segment_urls.append(segment_url)
  73
  74         byte_counter = 0
  75         with open(tmpfilename, 'wb') as outf:
  76             for i, segurl in enumerate(segment_urls):
  77                 segment = self.ydl.urlopen(segurl).read()
  78                 outf.write(segment)
  79                 byte_counter += len(segment)
  80                 self.to_screen(
  81                     '[hlsnative] %s: Downloading segment %d / %d' %
  82                     (info_dict['id'], i + 1, len(segment_urls)))
  83
  84         self._hook_progress({
  85             'downloaded_bytes': byte_counter,
  86             'total_bytes': byte_counter,
  87             'filename': filename,
  88             'status': 'finished',
  89         })
  90         self.try_rename(tmpfilename, filename)
  91         return True
  92