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Biplob Sutradhar 2021-05-24 22:29:00 +06:00 committed by GitHub
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1 changed files with 18 additions and 23 deletions
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main.py
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@ -13,12 +13,11 @@ from vtt_to_srt import convert
course_id = None course_id = None
header_bearer = None header_bearer = None
download_dir = "%s\out_dir" % os.getcwd() download_dir = os.path.join(os.getcwd(), "out_dir")
working_dir = "%s\working_dir" % os.getcwd( working_dir = os.path.join(os.getcwd(), "working_dir") # set the folder to download segments for DRM videos
) # set the folder to download segments for DRM videos
retry = 3 retry = 3
home_dir = os.getcwd() home_dir = os.getcwd()
keyfile_path = "%s\keyfile.json" % os.getcwd() keyfile_path = os.path.join(os.getcwd(), "keyfile.json")
dl_assets = False dl_assets = False
dl_captions = False dl_captions = False
skip_lectures = False skip_lectures = False
@ -80,7 +79,7 @@ def download_media(filename, url, lecture_working_dir, epoch=0):
unit='B', unit='B',
unit_scale=True, unit_scale=True,
desc=filename) desc=filename)
with open(f"{lecture_working_dir}\\{filename}", with open(os.path.join(lecture_working_dir, filename),
'wb') as video_file: 'wb') as video_file:
for chunk in media.iter_content(chunk_size=1024): for chunk in media.iter_content(chunk_size=1024):
if chunk: if chunk:
@ -135,7 +134,7 @@ def mux_process(video_title, lecture_working_dir, outfile):
if os.name == "nt": if os.name == "nt":
command = f"ffmpeg -y -i \"{lecture_working_dir}\\decrypted_audio.mp4\" -i \"{lecture_working_dir}\\decrypted_video.mp4\" -acodec copy -vcodec copy -fflags +bitexact -map_metadata -1 -metadata title=\"{video_title}\" -metadata creation_time=2020-00-00T70:05:30.000000Z \"{outfile}\"" command = f"ffmpeg -y -i \"{lecture_working_dir}\\decrypted_audio.mp4\" -i \"{lecture_working_dir}\\decrypted_video.mp4\" -acodec copy -vcodec copy -fflags +bitexact -map_metadata -1 -metadata title=\"{video_title}\" -metadata creation_time=2020-00-00T70:05:30.000000Z \"{outfile}\""
else: else:
command = f"nice -n 7 ffmpeg -y -i \"{lecture_working_dir}\\decrypted_audio.mp4\" -i \"{lecture_working_dir}\\decrypted_video.mp4\" -acodec copy -vcodec copy -fflags +bitexact -map_metadata -1 -metadata title=\"{video_title}\" -metadata creation_time=2020-00-00T70:05:30.000000Z \"{outfile}\"" command = f"nice -n 7 ffmpeg -y -i \"{lecture_working_dir}//decrypted_audio.mp4\" -i \"{lecture_working_dir}//decrypted_video.mp4\" -acodec copy -vcodec copy -fflags +bitexact -map_metadata -1 -metadata title=\"{video_title}\" -metadata creation_time=2020-00-00T70:05:30.000000Z \"{outfile}\""
os.system(command) os.system(command)
@ -155,7 +154,7 @@ def decrypt(kid, filename, lecture_working_dir):
) )
else: else:
os.system( os.system(
f"nice -n 7 mp4decrypt --key 1:{key} \"{lecture_working_dir}\\encrypted_{filename}.mp4\" \"{lecture_working_dir}\\decrypted_{filename}.mp4\"" f"nice -n 7 mp4decrypt --key 1:{key} \"{lecture_working_dir}//encrypted_{filename}.mp4\" \"{lecture_working_dir}//decrypted_{filename}.mp4\""
) )
@ -168,10 +167,10 @@ def handle_irregular_segments(media_info, video_title, lecture_working_dir,
output_path): output_path):
no_segment, video_url, video_init, video_extension, no_segment, audio_url, audio_init, audio_extension = media_info no_segment, video_url, video_init, video_extension, no_segment, audio_url, audio_init, audio_extension = media_info
download_media("video_0.seg.mp4", video_init, lecture_working_dir) download_media("video_0.seg.mp4", video_init, lecture_working_dir)
video_kid = extract_kid(f"{lecture_working_dir}\\video_0.seg.mp4") video_kid = extract_kid(os.path.join(lecture_working_dir, "video_0.seg.mp4"))
print("KID for video file is: " + video_kid) print("KID for video file is: " + video_kid)
download_media("audio_0.seg.mp4", audio_init, lecture_working_dir) download_media("audio_0.seg.mp4", audio_init, lecture_working_dir)
audio_kid = extract_kid(f"{lecture_working_dir}\\audio_0.seg.mp4") audio_kid = extract_kid(os.path.join(lecture_working_dir, "audio_0.seg.mp4"))
print("KID for audio file is: " + audio_kid) print("KID for audio file is: " + audio_kid)
for count in range(1, no_segment): for count in range(1, no_segment):
video_segment_url = video_url.replace("$Number$", str(count)) video_segment_url = video_url.replace("$Number$", str(count))
@ -324,7 +323,7 @@ def process_caption(caption,
caption.get("locale_id"), caption.get("ext")) caption.get("locale_id"), caption.get("ext"))
filename_no_ext = f"%s. %s_%s" % (lecture_index, sanitize(lecture_title), filename_no_ext = f"%s. %s_%s" % (lecture_index, sanitize(lecture_title),
caption.get("locale_id")) caption.get("locale_id"))
filepath = f"%s\\%s" % (lecture_dir, filename) filepath = os.path.join(lecture_dir, filename)
if os.path.isfile(filepath): if os.path.isfile(filepath):
print("> Captions '%s' already downloaded." % filename) print("> Captions '%s' already downloaded." % filename)
@ -384,8 +383,8 @@ def process_lecture(lecture, lecture_index, lecture_path, lecture_dir):
# encrypted # encrypted
print(f"> Lecture '%s' has DRM, attempting to download" % print(f"> Lecture '%s' has DRM, attempting to download" %
lecture_title) lecture_title)
lecture_working_dir = "%s\%s" % ( lecture_working_dir = os.path.join(
working_dir, lecture_asset["id"] working_dir, str(lecture_asset["id"])
) # set the folder to download ephemeral files ) # set the folder to download ephemeral files
media_sources = lecture_asset["media_sources"] media_sources = lecture_asset["media_sources"]
if not os.path.exists(lecture_working_dir): if not os.path.exists(lecture_working_dir):
@ -420,7 +419,7 @@ def process_lecture(lecture, lecture_index, lecture_path, lecture_dir):
if download_url: if download_url:
try: try:
download(download_url, download(download_url,
f"%s\\%s" % (lecture_dir, asset_filename), os.path.join(lecture_dir, asset_filename),
asset_filename) asset_filename)
except Exception as e: except Exception as e:
print( print(
@ -429,14 +428,13 @@ def process_lecture(lecture, lecture_index, lecture_path, lecture_dir):
continue continue
elif asset["asset_type"] == "Article": elif asset["asset_type"] == "Article":
assets.append(asset) assets.append(asset)
asset_path = f"%s\\%s.html" % (lecture_dir, asset_path = os.path.join(lecture_dir,
sanitize(lecture_title)) sanitize(lecture_title))
with open(asset_path, 'w') as f: with open(asset_path, 'w') as f:
f.write(asset["body"]) f.write(asset["body"])
elif asset["asset_type"] == "ExternalLink": elif asset["asset_type"] == "ExternalLink":
assets.append(asset) assets.append(asset)
asset_path = f"%s\\%s. External URLs.txt" % (lecture_dir, asset_path = os.path.join(lecture_dir, f"{lecture_index} . External URLs.txt")
lecture_index)
with open(asset_path, 'a') as f: with open(asset_path, 'a') as f:
f.write(f"%s : %s\n" % f.write(f"%s : %s\n" %
(asset["title"], asset["external_url"])) (asset["title"], asset["external_url"]))
@ -471,7 +469,7 @@ def process_lecture(lecture, lecture_index, lecture_path, lecture_dir):
def parse(data): def parse(data):
course_dir = f"%s\\%s" % (download_dir, course_id) course_dir = os.path.join(download_dir, course_id)
if not os.path.exists(course_dir): if not os.path.exists(course_dir):
os.mkdir(course_dir) os.mkdir(course_dir)
chapters = [] chapters = []
@ -489,20 +487,17 @@ def parse(data):
# This is caused by there not being a starting chapter # This is caused by there not being a starting chapter
lectures.append(obj) lectures.append(obj)
lecture_index = lectures.index(obj) + 1 lecture_index = lectures.index(obj) + 1
lecture_path = f"%s\\%s. %s.mp4" % (course_dir, lecture_index, lecture_path = os.path.join(course_dir, f'{lecture_index}. {sanitize(obj["title"])}.mp4')
sanitize(obj["title"]))
process_lecture(obj, lecture_index, lecture_path, download_dir) process_lecture(obj, lecture_index, lecture_path, download_dir)
for chapter in chapters: for chapter in chapters:
chapter_dir = f"%s\\%s. %s" % (course_dir, chapters.index(chapter) + 1, chapter_dir = os.path.join(course_dir, f'{chapters.index(chapter) + 1}. {sanitize(chapter["title"])}')
sanitize(chapter["title"]))
if not os.path.exists(chapter_dir): if not os.path.exists(chapter_dir):
os.mkdir(chapter_dir) os.mkdir(chapter_dir)
for lecture in chapter["lectures"]: for lecture in chapter["lectures"]:
lecture_index = chapter["lectures"].index(lecture) + 1 lecture_index = chapter["lectures"].index(lecture) + 1
lecture_path = f"%s\\%s. %s.mp4" % (chapter_dir, lecture_index, lecture_path = os.path.join(chapter_dir, f'{lecture_index}. {sanitize(lecture["title"])}.mp4')
sanitize(lecture["title"]))
process_lecture(lecture, lecture_index, lecture_path, chapter_dir) process_lecture(lecture, lecture_index, lecture_path, chapter_dir)
print("\n\n\n\n\n\n\n\n=====================") print("\n\n\n\n\n\n\n\n=====================")
print("All downloads completed for course!") print("All downloads completed for course!")