nndownload allows you to process videos and other links from Niconico, formerly known as Nico Nico Douga. For videos, it simulates the HTML5 player by performing a session request to get the HQ source. Where not available, it will fallback to the Flash player. Keep in mind that if your account doesn't have premium, it may download the LQ source during economy mode hours (12 PM - 2 AM JST). When not providing a login, some Flash videos will not be available for download or will only be available in a lower quality.
- Download videos with comments, thumbnails, and metadata
- Download Seiga images and manga
- Download a user's videos
- Download mylists
- Download videos faster using multiple threads
- Generate stream URLs for Niconama broadcasts
- Process text files with URLs
- Python >=3.6
- beautifulsoup4
- requests
- websockets
pip install nndownload
Binaries for Windows are available on the releases page.
usage: nndownload.py [options] input
positional arguments:
input URL or file
optional arguments:
-h, --help show this help message and exit
-u USERNAME, --username USERNAME
account username
-p PASSWORD, --password PASSWORD
account password
-n, --netrc use .netrc authentication
-q, --quiet suppress output to console
-l, --log log output to file
-v, --version show program's version number and exit
download options:
-y PROXY, --proxy PROXY
http or socks proxy
-o TEMPLATE, --output-path TEMPLATE
custom output path (see template options)
-r N, --threads N download using a specified number of threads
-g, --no-login create a download session without logging in
-f, --force-high-quality
only download if the high quality source is available
-m, --dump-metadata dump video metadata to file
-t, --download-thumbnail
download video thumbnail
-c, --download-comments
download video comments
-e, --english request video on english site
-aq AUDIO_QUALITY, --audio-quality AUDIO_QUALITY
specify audio quality (DMC videos only)
-vq VIDEO_QUALITY, --video-quality VIDEO_QUALITY
specify video quality (DMC videos only)
-s, --skip-media skip downloading media
import nndownload
url = "https://www.nicovideo.jp/watch/sm35249846"
output_path = "/tmp/{id}.{ext}"
nndownload.execute("-g", "-o", output_path, url)
Custom filepaths are constructed like standard Python template strings, e.g. {uploader} - {title}.{ext}
. For Seiga manga, the output path should be the template for a chapter directory, e.g. {manga_id}\{id} - {title}
. The available options are:
- comment_count
- description
- duration
- ext
- id
- mylist_count
- published
- quality
- size_high
- size_low
- thread_id
- thumbnail_url
- title
- uploader
- uploader_id
- url
- view_count
- audio_quality (DMC)
- video_quality (DMC)
- manga_id (Seiga, manga)
- manga_title (Seiga, manga)
- page_count (Seiga, manga)
- clip_count (Seiga, images)
After generating a stream URL, the program must be kept running to keep the stream active. mpv and streamlink are the best options for playing generated stream URLs. Other programs that use aggressive HLS caching and threading may also work.
For mpv:
mpv https://...
For streamlink, replace https
with hls
in the output stream URL:
streamlink "hls://..." best
- Check open issues.
This project is licensed under the MIT License.