X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=youtube_dl%2Fdownloader%2Ff4m.py;h=0e7a1c20075499e58b977da4154ce287b144f958;hb=6789defea9b1fc7ff631e9da8a281504167ced10;hp=c752e8e249e124c77f6e9ab1d820a9ab1e307d3e;hpb=2514d2635e0c8ff0fb72d00a093a849001df2bdd;p=youtube-dl diff --git a/youtube_dl/downloader/f4m.py b/youtube_dl/downloader/f4m.py index c752e8e24..0e7a1c200 100644 --- a/youtube_dl/downloader/f4m.py +++ b/youtube_dl/downloader/f4m.py @@ -9,10 +9,12 @@ import xml.etree.ElementTree as etree from .common import FileDownloader from .http import HttpFD +from ..compat import ( + compat_urlparse, +) from ..utils import ( struct_pack, struct_unpack, - compat_urlparse, format_bytes, encodeFilename, sanitize_open, @@ -175,34 +177,43 @@ def build_fragments_list(boot_info): """ Return a list of (segment, fragment) for each fragment in the video """ res = [] segment_run_table = boot_info['segments'][0] - # I've only found videos with one segment - segment_run_entry = segment_run_table['segment_run'][0] - n_frags = segment_run_entry[1] fragment_run_entry_table = boot_info['fragments'][0]['fragments'] first_frag_number = fragment_run_entry_table[0]['first'] - for (i, frag_number) in zip(range(1, n_frags + 1), itertools.count(first_frag_number)): - res.append((1, frag_number)) + fragments_counter = itertools.count(first_frag_number) + for segment, fragments_count in segment_run_table['segment_run']: + for _ in range(fragments_count): + res.append((segment, next(fragments_counter))) return res -def write_flv_header(stream, metadata): - """Writes the FLV header and the metadata to stream""" +def write_unsigned_int(stream, val): + stream.write(struct_pack('!I', val)) + + +def write_unsigned_int_24(stream, val): + stream.write(struct_pack('!I', val)[1:]) + + +def write_flv_header(stream): + """Writes the FLV header to stream""" # FLV header stream.write(b'FLV\x01') stream.write(b'\x05') stream.write(b'\x00\x00\x00\x09') - # FLV File body stream.write(b'\x00\x00\x00\x00') - # FLVTAG - # Script data - stream.write(b'\x12') - # Size of the metadata with 3 bytes - stream.write(struct_pack('!L', len(metadata))[1:]) - stream.write(b'\x00\x00\x00\x00\x00\x00\x00') - stream.write(metadata) - # Magic numbers extracted from the output files produced by AdobeHDS.php - #(https://github.com/K-S-V/Scripts) - stream.write(b'\x00\x00\x01\x73') + + +def write_metadata_tag(stream, metadata): + """Writes optional metadata tag to stream""" + SCRIPT_TAG = b'\x12' + FLV_TAG_HEADER_LEN = 11 + + if metadata: + stream.write(SCRIPT_TAG) + write_unsigned_int_24(stream, len(metadata)) + stream.write(b'\x00\x00\x00\x00\x00\x00\x00') + stream.write(metadata) + write_unsigned_int(stream, FLV_TAG_HEADER_LEN + len(metadata)) def _add_ns(prop): @@ -219,22 +230,43 @@ class F4mFD(FileDownloader): A downloader for f4m manifests or AdobeHDS. """ + def _get_unencrypted_media(self, doc): + media = doc.findall(_add_ns('media')) + if not media: + self.report_error('No media found') + for e in (doc.findall(_add_ns('drmAdditionalHeader')) + + doc.findall(_add_ns('drmAdditionalHeaderSet'))): + # If id attribute is missing it's valid for all media nodes + # without drmAdditionalHeaderId or drmAdditionalHeaderSetId attribute + if 'id' not in e.attrib: + self.report_error('Missing ID in f4m DRM') + media = list(filter(lambda e: 'drmAdditionalHeaderId' not in e.attrib and + 'drmAdditionalHeaderSetId' not in e.attrib, + media)) + if not media: + self.report_error('Unsupported DRM') + return media + def real_download(self, filename, info_dict): man_url = info_dict['url'] requested_bitrate = info_dict.get('tbr') self.to_screen('[download] Downloading f4m manifest') manifest = self.ydl.urlopen(man_url).read() self.report_destination(filename) - http_dl = HttpQuietDownloader(self.ydl, + http_dl = HttpQuietDownloader( + self.ydl, { 'continuedl': True, 'quiet': True, 'noprogress': True, + 'ratelimit': self.params.get('ratelimit', None), 'test': self.params.get('test', False), - }) + } + ) doc = etree.fromstring(manifest) - formats = [(int(f.attrib.get('bitrate', -1)), f) for f in doc.findall(_add_ns('media'))] + formats = [(int(f.attrib.get('bitrate', -1)), f) + for f in self._get_unencrypted_media(doc)] if requested_bitrate is None: # get the best format formats = sorted(formats, key=lambda f: f[0]) @@ -251,7 +283,11 @@ class F4mFD(FileDownloader): bootstrap = self.ydl.urlopen(bootstrap_url).read() else: bootstrap = base64.b64decode(bootstrap_node.text) - metadata = base64.b64decode(media.find(_add_ns('metadata')).text) + metadata_node = media.find(_add_ns('metadata')) + if metadata_node is not None: + metadata = base64.b64decode(metadata_node.text) + else: + metadata = None boot_info = read_bootstrap_info(bootstrap) fragments_list = build_fragments_list(boot_info) @@ -264,7 +300,8 @@ class F4mFD(FileDownloader): tmpfilename = self.temp_name(filename) (dest_stream, tmpfilename) = sanitize_open(tmpfilename, 'wb') - write_flv_header(dest_stream, metadata) + write_flv_header(dest_stream) + write_metadata_tag(dest_stream, metadata) # This dict stores the download progress, it's updated by the progress # hook @@ -277,7 +314,7 @@ class F4mFD(FileDownloader): def frag_progress_hook(status): frag_total_bytes = status.get('total_bytes', 0) estimated_size = (state['downloaded_bytes'] + - (total_frags - state['frag_counter']) * frag_total_bytes) + (total_frags - state['frag_counter']) * frag_total_bytes) if status['status'] == 'finished': state['downloaded_bytes'] += frag_total_bytes state['frag_counter'] += 1 @@ -287,13 +324,13 @@ class F4mFD(FileDownloader): frag_downloaded_bytes = status['downloaded_bytes'] byte_counter = state['downloaded_bytes'] + frag_downloaded_bytes frag_progress = self.calc_percent(frag_downloaded_bytes, - frag_total_bytes) + frag_total_bytes) progress = self.calc_percent(state['frag_counter'], total_frags) progress += frag_progress / float(total_frags) eta = self.calc_eta(start, time.time(), estimated_size, byte_counter) self.report_progress(progress, format_bytes(estimated_size), - status.get('speed'), eta) + status.get('speed'), eta) http_dl.add_progress_hook(frag_progress_hook) frags_filenames = []