ncp-downloader is a tool for network performance testing by downloading videos from a well-known online video platform.

Installation • Usage • Disclaimer • License

Installation

Download the latest release from the Releases page and extract it to the directory of your choice on your local machine.

Usage

ncp QUERY [OUTPUT_DIR] [OPTIONS]

QUERY: URL of the video or channel.

-r RESOLUTION, --resolution RESOLUTION      Target resolution. Defaults to highest resolution available.
-R, --resume                                Resume download.
-t, --transcode                             Transcode downloaded videos.
--ffmpeg /PATH/TO/FFMPEG                    Path to ffmpeg. Defaults to ffmpeg stored in PATH.
--vcodec VCODEC                             Video codec for ffmpeg transcoding.
--acodec ACODEC                             Audio codec for ffmpeg transcoding.
--ffmpeg-options FFMPEG_OPTIONS             Additional ffmpeg options. (e.g. --ffmpeg-options "-acodec copy -vcodec copy")
--thread THREAD                             Number of threads for downloading. Defaults to 1. (NOT RECOMMENDED TO EDIT)
--select-manually                           Manually select videos to download. Only works when downloading the whole channel.
--username USERNAME                         Username for login.
--password PASSWORD                         Password for login.
--debug                                     Enable debug mode (displays debug messages).
--help                                      Show help menu.

If login credentials are provided, a session token will be generated and saved locally. DO NOT SHARE THE TOKEN WITH ANYONE.
Sometimes this tool may not function properly, delete temp files and folder to make it re-download the video.
(Feel free to modify the .json file if you understand what you are doing.)

--select-manually

When downloading the whole channel, you can use this option to manually select the videos to be downloaded.

• Arrow Up/Arrow Down, Arrow Left/Arrow Right: Navigate
• Space: Select / Deselect
• Enter: Start download
• Ctrl + A: Select all
• Ctrl + R: Deselct all
• Ctrl + W: Use filter

The filter supports either with noarmal keyword-filtering or lambda expression (Case-Sensitive).
Videos will be selected if they match the conditions.

• /only <keyword>: Select videos that contain the keyword only.
• /add <keyword>: Add the videos that contain the keyword to selection.
• /remove <keyword>: Remove the videos that contains the keyword from selection.
• /lambda <lambda expression>: Use lambda expression to filter the videos.

The syntax of the lambda expression does not need to include the lambda x: part, and should return a boolean value.
The following is an example of a lambda expression that selects the video with

• title containing "ASMR";
• length of title is greater than 30;
• index is greater than 10;
• and the content code contains letter "R".

/lambda "ASMR" in x.title and len(x.title) > 30 and x.index > 10 and "R" in x.content_code

The x object has the following attributes:

• title: Title of the video.
• index: Index of the video.
• content_code: Content code of the video.

NOTE: lambda expression is case-sensitive. You can use .lower() to make it all lowercase.
Python built-in functions and variables are supported in the lambda expression.

Disclaimer

Using this tool may lead to account suspension or ban. Use it at your own discretion.

Please do use this tool responsibly and respect the rights of the content creators.
You should ONLY use this tool for network performance testing under any circumstances.
Data downloaded using this tool should be for personal use only. Obtain permission from the original creator before use.

License

This project is licensed under the LGPLv3 License - see the LICENSE file for details.