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+ Add ability to skip downloading lecture videos
+ You can now specify the Bearer token and course id as an argument to the program (see advanced usage)
+ Updated Advanced Usage section of readme
This commit is contained in:
Puyodead1 2021-05-19 17:50:20 -04:00
parent 77e57e324d
commit 048fbe09bf
2 changed files with 109 additions and 61 deletions
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29
README.md
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@ -46,7 +46,7 @@ You will need to get a few things before you can use this program:
- locate the `Request Headers` section
- copy the the text after `Authorization`, it should look like `Bearer xxxxxxxxxxx`
- ![bearer token example](https://i.imgur.com/FhQdwgD.png)
- enter this in the `.env` file after `UDEMY_BEARER=`
- enter this in the `.env` file after `UDEMY_BEARER=` (you can also pass this as an argument, see advanced usage for more information)
### Aquire Course ID
@ -54,7 +54,7 @@ You will need to get a few things before you can use this program:
- locate the request url field
- ![request url](https://i.imgur.com/EUIV3bk.png)
- copy the number after `/api-2.0/courses/` as seen highlighed in the above picture
- enter this in the `.env` file after `UDEMY_COURSE_ID=`
- enter this in the `.env` file after `UDEMY_COURSE_ID=` (you can also pass this as an argument, see advanced usage for more information)
### Key ID and Key
@ -71,19 +71,27 @@ You can now run `python main.py` to start downloading. The course will download
# Advanced Usage
```
usage: main.py [-h] [-d] [-q] [-l] [--download-assets] [--download-captions]
usage: main.py [-h] [-d] [-b BEARER_TOKEN] [-c COURSE_ID] [-q QUALITY] [-l LANG] [--skip-lectures] [--download-assets] [--download-captions]
Udemy Downloader
optional arguments:
-h, --help show this help message and exit
-d, --debug Use test_data.json rather than fetch from the udemy api.
-q , --quality Download specific video quality. (144, 360, 480, 720, 1080)
-l , --lang The language to download for captions (Default is en)
--download-assets If specified, lecture assets will be downloaded.
--download-captions If specified, captions will be downloaded.
-h, --help show this help message and exit
-d, --debug Use test_data.json rather than fetch from the udemy api.
-b BEARER_TOKEN, --bearer BEARER_TOKEN
The Bearer token to use
-c COURSE_ID, --course-id COURSE_ID
The ID of the course to download
-q QUALITY, --quality QUALITY
Download specific video quality. (144, 360, 480, 720, 1080)
-l LANG, --lang LANG The language to download for captions (Default is en)
--skip-lectures If specified, lectures won't be downloaded.
--download-assets If specified, lecture assets will be downloaded.
--download-captions If specified, captions will be downloaded.
```
- Passing a Bearer Token and Course ID as an argument
- `python main.py -b <Bearer Token> -c <Course ID>`
- Download a specific quality
- `python main.py -q 720`
- Download assets along with lectures
@ -99,6 +107,9 @@ optional arguments:
- `python main.py --download-captions -l pl` - Polish Subtitles
- `python main.py --download-captions -l all` - Downloads all subtitles
- etc
- Skip downloading lecture videos
- `python main.py --skip-lectures --download-captions` - Downloads only captions
- `python main.py --skip-lectures --download-assets` - Downloads only assets
# Getting an error about "Accepting the latest terms of service"?

141
main.py
View File

@ -11,13 +11,8 @@ from mpegdash.utils import (parse_attr_value, parse_child_nodes,
from utils import extract_kid
from vtt_to_srt import convert
load_dotenv()
course_id = os.getenv("UDEMY_COURSE_ID") # the course id to download
bearer_token = os.getenv(
"UDEMY_BEARER"
) # you can find this in the network tab, its a request header under Authorization/x-udemy-authorization
header_bearer = "Bearer " + bearer_token
course_id = None
header_bearer = None
download_dir = "%s\out_dir" % os.getcwd()
working_dir = "%s\working_dir" % os.getcwd(
) # set the folder to download segments for DRM videos
@ -26,6 +21,7 @@ home_dir = os.getcwd()
keyfile_path = "%s\keyfile.json" % os.getcwd()
dl_assets = False
dl_captions = False
skip_lectures = False
caption_locale = "en"
quality = None # None will download the best possible
valid_qualities = [144, 360, 480, 720, 1080]
@ -361,53 +357,55 @@ def process_caption(caption,
def process_lecture(lecture, lecture_index, lecture_path, lecture_dir):
lecture_title = lecture["title"]
lecture_asset = lecture["asset"]
if lecture_asset["media_license_token"] == None:
# not encrypted
media_sources = lecture_asset["media_sources"]
if quality: # if quality is specified, try to find the requested quality
lecture_url = next(
(x["src"]
for x in media_sources if x["label"] == str(quality)),
media_sources[0]["src"]
) # find the quality requested or return the best available
else:
lecture_url = media_sources[0][
"src"] # best quality is the first index
if not skip_lectures:
if lecture_asset["media_license_token"] == None:
# not encrypted
media_sources = lecture_asset["media_sources"]
if quality: # if quality is specified, try to find the requested quality
lecture_url = next(
(x["src"]
for x in media_sources if x["label"] == str(quality)),
media_sources[0]["src"]
) # find the quality requested or return the best available
else:
lecture_url = media_sources[0][
"src"] # best quality is the first index
if not os.path.isfile(lecture_path):
try:
download(lecture_url, lecture_path, lecture_title)
except Exception as e:
# We could add a retry here
print(f"> Error downloading lecture: {e}. Skipping...")
else:
print(f"> Lecture '%s' is already downloaded, skipping..." %
lecture_title)
else:
# encrypted
print(f"> Lecture '%s' has DRM, attempting to download" %
lecture_title)
lecture_working_dir = "%s\%s" % (
working_dir, lecture_asset["id"]
) # set the folder to download ephemeral files
media_sources = lecture_asset["media_sources"]
if not os.path.exists(lecture_working_dir):
os.mkdir(lecture_working_dir)
if not os.path.isfile(lecture_path):
mpd_url = next((x["src"] for x in media_sources
if x["type"] == "application/dash+xml"), None)
if not mpd_url:
print("> Couldn't find dash url for lecture '%s', skipping...",
if not os.path.isfile(lecture_path):
try:
download(lecture_url, lecture_path, lecture_title)
except Exception as e:
# We could add a retry here
print(f"> Error downloading lecture: {e}. Skipping...")
else:
print(f"> Lecture '%s' is already downloaded, skipping..." %
lecture_title)
return
base_url = mpd_url.split("index.mpd")[0]
media_info = manifest_parser(mpd_url)
handle_irregular_segments(media_info, lecture_title,
lecture_working_dir, lecture_path)
cleanup(lecture_working_dir)
else:
print("> Lecture '%s' is already downloaded, skipping..." %
# encrypted
print(f"> Lecture '%s' has DRM, attempting to download" %
lecture_title)
lecture_working_dir = "%s\%s" % (
working_dir, lecture_asset["id"]
) # set the folder to download ephemeral files
media_sources = lecture_asset["media_sources"]
if not os.path.exists(lecture_working_dir):
os.mkdir(lecture_working_dir)
if not os.path.isfile(lecture_path):
mpd_url = next((x["src"] for x in media_sources
if x["type"] == "application/dash+xml"), None)
if not mpd_url:
print(
"> Couldn't find dash url for lecture '%s', skipping...",
lecture_title)
return
base_url = mpd_url.split("index.mpd")[0]
media_info = manifest_parser(mpd_url)
handle_irregular_segments(media_info, lecture_title,
lecture_working_dir, lecture_path)
cleanup(lecture_working_dir)
else:
print("> Lecture '%s' is already downloaded, skipping..." %
lecture_title)
# process assets
if dl_assets:
@ -505,13 +503,26 @@ if __name__ == "__main__":
action="store_true",
help="Use test_data.json rather than fetch from the udemy api.",
)
parser.add_argument(
"-b",
"--bearer",
dest="bearer_token",
type=str,
help="The Bearer token to use",
)
parser.add_argument(
"-c",
"--course-id",
dest="course_id",
type=str,
help="The ID of the course to download",
)
parser.add_argument(
"-q",
"--quality",
dest="quality",
type=int,
help="Download specific video quality. (144, 360, 480, 720, 1080)",
metavar="",
)
parser.add_argument(
"-l",
@ -519,7 +530,12 @@ if __name__ == "__main__":
dest="lang",
type=str,
help="The language to download for captions (Default is en)",
metavar="",
)
parser.add_argument(
"--skip-lectures",
dest="skip_lectures",
action="store_true",
help="If specified, lectures won't be downloaded.",
)
parser.add_argument(
"--download-assets",
@ -541,6 +557,8 @@ if __name__ == "__main__":
caption_locale = args.lang
if args.download_captions:
dl_captions = True
if args.skip_lectures:
skip_lectures = True
if args.quality:
if not args.quality in valid_qualities:
print("Invalid quality specified! %s" % quality)
@ -548,6 +566,25 @@ if __name__ == "__main__":
else:
quality = args.quality
load_dotenv()
if args.bearer_token:
header_bearer = f"Bearer %s" % args.bearer_token
else:
header_bearer = f"Bearer %s" % os.getenv("UDEMY_BEARER")
if args.course_id:
course_id = args.course_id
else:
course_id = os.getenv("UDEMY_COURSE_ID")
if not course_id:
print("> Missing Course ID!")
sys.exit(1)
if not header_bearer:
print("> Missing Bearer Token!")
sys.exit(1)
print(f"> Using course ID {course_id}")
if args.debug:
# this is for development purposes so we dont need to make tons of requests when testing
# course data json is just stored and read from a file