diff options
Diffstat (limited to 'youtube_dl/downloader/hls.py')
| -rw-r--r-- | youtube_dl/downloader/hls.py | 51 |
1 files changed, 28 insertions, 23 deletions
diff --git a/youtube_dl/downloader/hls.py b/youtube_dl/downloader/hls.py index 4989abc..0e29c8a 100644 --- a/youtube_dl/downloader/hls.py +++ b/youtube_dl/downloader/hls.py @@ -1,6 +1,5 @@ from __future__ import unicode_literals -import os.path import re import binascii try: @@ -18,8 +17,6 @@ from ..compat import ( compat_struct_pack, ) from ..utils import ( - encodeFilename, - sanitize_open, parse_m3u8_attributes, update_url_query, ) @@ -34,7 +31,7 @@ class HlsFD(FragmentFD): def can_download(manifest, info_dict): UNSUPPORTED_FEATURES = ( r'#EXT-X-KEY:METHOD=(?!NONE|AES-128)', # encrypted streams [1] - r'#EXT-X-BYTERANGE', # playlists composed of byte ranges of media files [2] + # r'#EXT-X-BYTERANGE', # playlists composed of byte ranges of media files [2] # Live streams heuristic does not always work (e.g. geo restricted to Germany # http://hls-geo.daserste.de/i/videoportal/Film/c_620000/622873/format,716451,716457,716450,716458,716459,.mp4.csmil/index_4_av.m3u8?null=0) @@ -52,7 +49,9 @@ class HlsFD(FragmentFD): # 4. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.3.5 ) check_results = [not re.search(feature, manifest) for feature in UNSUPPORTED_FEATURES] - check_results.append(can_decrypt_frag or '#EXT-X-KEY:METHOD=AES-128' not in manifest) + is_aes128_enc = '#EXT-X-KEY:METHOD=AES-128' in manifest + check_results.append(can_decrypt_frag or not is_aes128_enc) + check_results.append(not (is_aes128_enc and r'#EXT-X-BYTERANGE' in manifest)) check_results.append(not info_dict.get('is_live')) return all(check_results) @@ -100,31 +99,31 @@ class HlsFD(FragmentFD): i = 0 media_sequence = 0 decrypt_info = {'METHOD': 'NONE'} - frags_filenames = [] + byte_range = {} + frag_index = 0 for line in s.splitlines(): line = line.strip() if line: if not line.startswith('#'): + frag_index += 1 + if frag_index <= ctx['fragment_index']: + continue frag_url = ( line if re.match(r'^https?://', line) else compat_urlparse.urljoin(man_url, line)) - frag_name = 'Frag%d' % i - frag_filename = '%s-%s' % (ctx['tmpfilename'], frag_name) if extra_query: frag_url = update_url_query(frag_url, extra_query) count = 0 + headers = info_dict.get('http_headers', {}) + if byte_range: + headers['Range'] = 'bytes=%d-%d' % (byte_range['start'], byte_range['end']) while count <= fragment_retries: try: - success = ctx['dl'].download(frag_filename, { - 'url': frag_url, - 'http_headers': info_dict.get('http_headers'), - }) + success, frag_content = self._download_fragment( + ctx, frag_url, info_dict, headers) if not success: return False - down, frag_sanitized = sanitize_open(frag_filename, 'rb') - frag_content = down.read() - down.close() break except compat_urllib_error.HTTPError as err: # Unavailable (possibly temporary) fragments may be served. @@ -133,28 +132,29 @@ class HlsFD(FragmentFD): # https://github.com/rg3/youtube-dl/issues/10448). count += 1 if count <= fragment_retries: - self.report_retry_fragment(err, frag_name, count, fragment_retries) + self.report_retry_fragment(err, frag_index, count, fragment_retries) if count > fragment_retries: if skip_unavailable_fragments: i += 1 media_sequence += 1 - self.report_skip_fragment(frag_name) + self.report_skip_fragment(frag_index) continue self.report_error( 'giving up after %s fragment retries' % fragment_retries) return False if decrypt_info['METHOD'] == 'AES-128': iv = decrypt_info.get('IV') or compat_struct_pack('>8xq', media_sequence) + decrypt_info['KEY'] = decrypt_info.get('KEY') or self.ydl.urlopen(decrypt_info['URI']).read() frag_content = AES.new( decrypt_info['KEY'], AES.MODE_CBC, iv).decrypt(frag_content) - ctx['dest_stream'].write(frag_content) - frags_filenames.append(frag_sanitized) + self._append_fragment(ctx, frag_content) # We only download the first fragment during the test if test: break i += 1 media_sequence += 1 elif line.startswith('#EXT-X-KEY'): + decrypt_url = decrypt_info.get('URI') decrypt_info = parse_m3u8_attributes(line[11:]) if decrypt_info['METHOD'] == 'AES-128': if 'IV' in decrypt_info: @@ -164,13 +164,18 @@ class HlsFD(FragmentFD): man_url, decrypt_info['URI']) if extra_query: decrypt_info['URI'] = update_url_query(decrypt_info['URI'], extra_query) - decrypt_info['KEY'] = self.ydl.urlopen(decrypt_info['URI']).read() + if decrypt_url != decrypt_info['URI']: + decrypt_info['KEY'] = None elif line.startswith('#EXT-X-MEDIA-SEQUENCE'): media_sequence = int(line[22:]) + elif line.startswith('#EXT-X-BYTERANGE'): + splitted_byte_range = line[17:].split('@') + sub_range_start = int(splitted_byte_range[1]) if len(splitted_byte_range) == 2 else byte_range['end'] + byte_range = { + 'start': sub_range_start, + 'end': sub_range_start + int(splitted_byte_range[0]), + } self._finish_frag_download(ctx) - for frag_file in frags_filenames: - os.remove(encodeFilename(frag_file)) - return True |