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+ GNU GENERAL PUBLIC LICENSE
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+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ <program> Copyright (C) <year> <name of author>
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
--- /dev/null
+#!/usr/bin/env python
+#
+# smooth-dl - download videos served using Smooth Streaming technology
+#
+# Copyright (C) 2010 Antonio Ospite <ospite@studenti.unina.it>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#
+# TODO:
+# - Handle HTTP errors:
+# "Connection reset by peer"
+# "Resource not available"
+# "Gateway Time-out"
+# - Support more Manifest formats:
+# WaveFormatEx attribute instead of PrivateCodecdata
+# 'd' and other attributes in chunk element ('i', 's', 'q')
+#
+# basically, write a proper implementation of manifest parsing and chunk
+# downloading
+
+
+__description = "Download videos served using Smooth Streaming technology"
+__version = "0.x"
+__author_info = "Written by Antonio Ospite http://ao2.it"
+
+import os
+import sys
+import xml.etree.ElementTree as etree
+import urllib2
+import struct
+import tempfile
+from optparse import OptionParser
+
+
+def get_chunk_data(data):
+
+ moof_size = struct.unpack(">L", data[0:4])[0]
+ mdat_size = struct.unpack(">L", data[moof_size:moof_size + 4])[0]
+
+ data_start = moof_size + 4 + len('mdat')
+ data_size = mdat_size - 4 - len('mdat')
+
+ #print len(data[data_start:]), \
+ # len(data[data_start:data_start + data_size]), data_size
+
+ assert(len(data[data_start:]) == data_size)
+
+ return data[data_start:data_start + data_size]
+
+
+def hexstring_to_bytes(hex_string):
+ res = ""
+ for i in range(0, len(hex_string), 2):
+ res += chr(int(hex_string[i:i + 2], 16))
+
+ return res
+
+
+def write_wav_header(out_file, fmt, codec_private_data, data_len):
+
+ extradata = hexstring_to_bytes(codec_private_data)
+
+ fmt['cbSize'] = len(extradata)
+ fmt_len = 18 + fmt['cbSize']
+ wave_len = len("WAVEfmt ") + 4 + fmt_len + len('data') + 4
+
+ out_file.write("RIFF")
+ out_file.write(struct.pack('<L', wave_len))
+ out_file.write("WAVEfmt ")
+ out_file.write(struct.pack('<L', fmt_len))
+ out_file.write(struct.pack('<H', fmt['wFormatTag']))
+ out_file.write(struct.pack('<H', fmt['nChannels']))
+ out_file.write(struct.pack('<L', fmt['nSamplesPerSec']))
+ out_file.write(struct.pack('<L', fmt['nAvgBytesPerSec']))
+ out_file.write(struct.pack('<H', fmt['nBlockAlign']))
+ out_file.write(struct.pack('<H', fmt['wBitsPerSample']))
+ out_file.write(struct.pack('<H', fmt['cbSize']))
+ out_file.write(extradata)
+ out_file.write("data")
+ out_file.write(struct.pack('<L', data_len))
+
+
+def get_manifest(base_url, dest_dir=tempfile.gettempdir(),
+ manifest_file='Manifest'):
+ """Returns the manifest and the new URL if this is changed"""
+
+ if os.path.exists(dest_dir) == False:
+ os.mkdir(dest_dir, 0755)
+
+ if base_url.startswith('http://'):
+
+ manifest_url = base_url
+ if not manifest_url.lower().endswith(('/manifest', '.ismc', '.csm')):
+ manifest_url += '/Manifest'
+
+ response = urllib2.urlopen(manifest_url)
+ data = response.read()
+
+ manifest_path = os.path.join(dest_dir, manifest_file)
+ f = open(manifest_path, "w")
+ f.write(data)
+ f.close()
+ else:
+ manifest_path = base_url
+
+ manifest = etree.parse(manifest_path)
+
+ version = manifest.getroot().attrib['MajorVersion']
+ if version != "2":
+ raise Exception('Only Smooth Streaming version 2 supported')
+
+ try:
+ # if some intermediate client Manifest is used, like in Rai Replay
+ clip = manifest.find("Clip")
+ actual_manifest_url = clip.attrib["Url"]
+ base_url = actual_manifest_url.lower().replace("/manifest", "")
+ except:
+ pass
+
+ return (manifest, base_url)
+
+
+def print_manifest_info(manifest):
+
+ streams = manifest.findall('//StreamIndex')
+
+ for i, s in enumerate(streams):
+ stream_type = s.attrib["Type"]
+ url = s.attrib["Url"]
+
+ print "Stream: %s Type: %s" % (i, stream_type)
+
+ print "\tQuality Levels:"
+ qualities = s.findall("QualityLevel")
+ for i, q in enumerate(qualities):
+ bitrate = q.attrib["Bitrate"]
+ fourcc = q.attrib["FourCC"]
+
+ if stream_type == "video":
+ size = "%sx%s" % (q.attrib["MaxWidth"], q.attrib["MaxHeight"])
+ print "\t%2s: %4s %10s @ %7s bps" % (i, fourcc, size, bitrate)
+ if stream_type == "audio":
+ channels = q.attrib["Channels"]
+ sampling_rate = q.attrib["SamplingRate"]
+ bits_per_sample = q.attrib["BitsPerSample"]
+ print "\t%2s: %4s %sHz %sbits %sch @ %7s bps" % (i, fourcc,
+ sampling_rate, bits_per_sample, channels, bitrate)
+
+ print
+
+
+def download_chunks(base_url, manifest, stream_index, quality_level, dest_dir):
+
+ if os.path.exists(dest_dir) == False:
+ os.mkdir(dest_dir, 0755)
+
+ stream = manifest.findall('//StreamIndex')[stream_index]
+
+ quality = stream.findall("QualityLevel")[quality_level]
+ bitrate = quality.attrib["Bitrate"]
+
+ # Assume URLs are in this form:
+ # Url="QualityLevels({bitrate})/Fragments(video={start time})"
+ url = stream.attrib["Url"]
+
+ chunks_quality = url.split('/')[0].replace("{bitrate}", bitrate)
+ chunks_dest_dir = os.path.join(dest_dir, chunks_quality)
+ if os.path.exists(chunks_dest_dir) == False:
+ os.mkdir(chunks_dest_dir, 0755)
+
+ chunks = stream.findall("c")
+ data_size = 0
+ print "\nDownloading Stream %d" % stream_index
+ print "\tChunks %10d/%-10d" % (0, len(chunks)), "\r",
+ sys.stdout.flush()
+ for i, c in enumerate(chunks):
+ t = c.attrib["t"]
+
+ chunk_name = url.split('/')[1].replace("{start time}", t)
+ chunk_file = os.path.join(dest_dir, chunks_quality, chunk_name)
+
+ if os.path.exists(chunk_file) == False:
+ chunk_url = base_url + '/' + chunks_quality + '/' + chunk_name
+ response = urllib2.urlopen(chunk_url)
+ data = response.read()
+
+ f = open(chunk_file, "wb")
+ f.write(data)
+ f.close()
+ else:
+ f = open(chunk_file, "rb")
+ data = f.read()
+ f.close()
+
+ data_size += len(data)
+ print "\tChunks %10d/%-10d" % (i + 1, len(chunks)), "\r",
+ sys.stdout.flush()
+ print "\tDownloaded size:", data_size
+
+
+def rebuild_stream(manifest, stream_index, quality_level, src_dir,
+ dest_file_name, final_dest_file=None):
+
+ if final_dest_file == None:
+ final_dest_file = dest_file_name
+
+ stream = manifest.findall('//StreamIndex')[stream_index]
+
+ quality = stream.findall("QualityLevel")[quality_level]
+ bitrate = quality.attrib["Bitrate"]
+
+ # Assume URLs are in this form:
+ # Url="QualityLevels({bitrate})/Fragments(video={start time})"
+ url = stream.attrib["Url"]
+
+ chunks_quality = url.split('/')[0].replace("{bitrate}", bitrate)
+ chunks_src_dir = os.path.join(src_dir, chunks_quality)
+
+ dest_file = open(dest_file_name, "wb")
+
+ chunks = stream.findall("c")
+ data_size = 0
+ print "\nRebuilding Stream %d" % stream_index
+ print "\tChunks %10d/%-10d" % (0, len(chunks)), "\r",
+ sys.stdout.flush()
+ for i, c in enumerate(chunks):
+ t = c.attrib["t"]
+
+ chunk_name = url.split('/')[1].replace("{start time}", t)
+ chunk_file = os.path.join(chunks_src_dir, chunk_name)
+
+ f = open(chunk_file, "rb")
+ data = get_chunk_data(f.read())
+ f.close()
+ dest_file.write(data)
+ data_size += len(data)
+ print "\tChunks %10d/%-10d" % (i + 1, len(chunks)), "\r",
+ sys.stdout.flush()
+
+ # Add a nice WAV header
+ if stream.attrib['Type'] == "audio":
+ codec_private_data = quality.attrib['CodecPrivateData']
+
+ fmt = {}
+ fmt['wFormatTag'] = int(quality.attrib['AudioTag'])
+ fmt['nChannels'] = int(quality.attrib['Channels'])
+ fmt['nSamplesPerSec'] = int(quality.attrib['SamplingRate'])
+ fmt['nAvgBytesPerSec'] = int(quality.attrib['Bitrate']) / 8
+ fmt['wBitsPerSample'] = int(quality.attrib['BitsPerSample'])
+ fmt['nBlockAlign'] = int(quality.attrib['PacketSize'])
+ fmt['cbSize'] = 0
+
+ f = open(final_dest_file, "wb")
+ write_wav_header(f, fmt, codec_private_data, data_size)
+ dest_file.close()
+ dest_file = open(dest_file_name, "rb")
+ f.write(dest_file.read())
+ f.close()
+ dest_file.close()
+
+ print
+ print "Stream %d, actual data size: %d\n" % (stream_index, data_size)
+
+
+def calc_tracks_delay(manifest, stream1_index, stream2_index):
+ streams = manifest.findall('//StreamIndex')
+
+ s1 = streams[stream1_index]
+ s2 = streams[stream2_index]
+
+ s1_start_chunk = s1.find("c")
+ s2_start_chunk = s2.find("c")
+
+ s1_start_time = int(s1_start_chunk.attrib['t'])
+ s2_start_time = int(s2_start_chunk.attrib['t'])
+
+ s1_timescale = float(s1.attrib['TimeScale'])
+ s2_timescale = float(s2.attrib['TimeScale'])
+
+ # calc difference in seconds
+ delay = s2_start_time / s2_timescale - \
+ s1_start_time / s1_timescale
+
+ return delay
+
+
+def get_clip_duration(manifest):
+ # TODO: use <Clip ClipBegin="" ClipEnd=""> if Duration is not available
+ duration = manifest.getroot().attrib['Duration']
+
+ return float(duration) / 10000000 # here is the default timescale
+
+
+def smooth_download(url, manifest, dest_dir=tempfile.gettempdir(),
+ video_stream_index=0, audio_stream_index=1,
+ video_quality_level=0, audio_quality_level=0,
+ chunks_dir=None, download=True,
+ out_video_file='_video.vc1', out_audio_file='_audio.raw'):
+
+ if chunks_dir == None:
+ chunks_dir = dest_dir
+
+ if download:
+ download_chunks(url, manifest, video_stream_index,
+ video_quality_level, chunks_dir)
+ download_chunks(url, manifest, audio_stream_index,
+ audio_quality_level, chunks_dir)
+
+ dest_video = os.path.join(dest_dir, out_video_file)
+ dest_audio = os.path.join(dest_dir, out_audio_file)
+
+ rebuild_stream(manifest, video_stream_index, video_quality_level,
+ chunks_dir, dest_video)
+ rebuild_stream(manifest, audio_stream_index, audio_quality_level,
+ chunks_dir, dest_audio, dest_audio + '.wav')
+
+ #duration = get_clip_duration(manifest)
+
+ delay = calc_tracks_delay(manifest, video_stream_index,
+ audio_stream_index)
+
+ # optionally encode audio to vorbis:
+ # ffmpeg -i _audio.raw.wav -acodec libvorbis -aq 60 audio.ogg
+ mux_command = ("ffmpeg -i %s \\\n" +
+ " -itsoffset %f -async 1 -i %s \\\n" +
+ " -vcodec copy -acodec copy ffout.mkv") % \
+ (dest_video, delay, dest_audio + '.wav')
+
+ print mux_command
+
+
+def options_parser():
+ version = "%%prog %s" % __version
+ usage = "usage: %prog [options] <manifest URL or file>"
+ parser = OptionParser(usage=usage, version=version,
+ description=__description, epilog=__author_info)
+ parser.add_option("-i", "--info",
+ action="store_true", dest="info_only",
+ default=False, help="print Manifest info and exit")
+ parser.add_option("-m", "--manifest-only",
+ action="store_true", dest="manifest_only",
+ default=False, help="download Manifest file and exit")
+ parser.add_option("-n", "--no-download",
+ action="store_false", dest="download",
+ default=True, help="disable downloading chunks")
+ parser.add_option("-s", "--sync-delay",
+ action="store_true", dest="sync_delay",
+ default=False, help="show the sync delay between the given streams and exit")
+ parser.add_option("-d", "--dest-dir", metavar="<dir>",
+ dest="dest_dir", default=tempfile.gettempdir(),
+ help="destination directory")
+ parser.add_option("-c", "--chunks-dir", metavar="<dir>",
+ dest="chunks_dir", default=None,
+ help="directory containing chunks, if different from destination dir")
+ parser.add_option("-v", "--video-stream", metavar="<n>",
+ type="int", dest="video_stream_index", default=0,
+ help="index of the video stream")
+ parser.add_option("-a", "--audio-stream", metavar="<n>",
+ type="int", dest="audio_stream_index", default=1,
+ help="index of the audio stream")
+ parser.add_option("-q", "--video-quality", metavar="<n>",
+ type="int", dest="video_quality_level", default=0,
+ help="index of the video quality level")
+ parser.add_option("-Q", "--audio-quality", metavar="<n>",
+ type="int", dest="audio_quality_level", default=0,
+ help="index of the audio quality level")
+
+ return parser
+
+
+if __name__ == "__main__":
+
+ parser = options_parser()
+ (options, args) = parser.parse_args()
+
+ if len(args) != 1:
+ parser.print_help()
+ parser.exit(1)
+
+ url = args[0]
+ manifest, url = get_manifest(url, options.dest_dir)
+
+ if options.manifest_only:
+ parser.exit(0)
+
+ if options.sync_delay:
+ print calc_tracks_delay(manifest,
+ options.video_stream_index,
+ options.audio_stream_index)
+ parser.exit(0)
+
+ if options.info_only:
+ print_manifest_info(manifest)
+ parser.exit(0)
+
+ print_manifest_info(manifest)
+
+ smooth_download(url, manifest, options.dest_dir,
+ options.video_stream_index, options.audio_stream_index,
+ options.video_quality_level, options.audio_quality_level,
+ options.chunks_dir, options.download)
projects / smooth-dl.git / commitdiff