Bahamut Anime Downloader

Bahamut Anime Downloader is a library designed to fetch low-quality anime episodes from Bahamut Anime.

This package is used by baha-anime-skip internally, which adds "skip" buttons for anime openings and endings on the Bahamut Anime.

Key Features

Simply provide the sn (serial number) of the desired anime, and the tool will seamlessly:

• Fetch and Parse: Download the meta-m3u8 and m3u8 playlist files, then parse them for you.
• Download and Decrypt: Acquire the TS (Transport Stream) files and automatically decrypt them.

Note: This tool stops short of merging the downloaded TS files into a single MP4 file. If you require this functionality, you can easily extend it with the merge function available in the baha-anime-dl-ext package.

Platform Independence

The package is platform-agnostic. You can plug in any custom implementations for fetch and subtle as needed.

Usage Examples

Basic Download Example

import fs from "node:fs";
import path from "node:path";
import { Downloader } from "baha-anime-dl";

const SN = 34886;
const dir = "tmp";

if (!fs.existsSync(dir)) {
    fs.mkdirSync(dir);
}

main();

async function main() {
    const downloader = new Downloader();
    const download = downloader.download(SN);

    const meta = await download.meta;
    fs.writeFileSync(path.join(dir, "meta.m3u8"), meta);

    const playlist = await download.playlist;
    fs.writeFileSync(path.join(dir, "playlist.m3u8"), playlist);

    for (let i = 0; i < download.segments.length; i++) {
        const segment = download.segments[i];
        segment.content.then((content) => {
            fs.writeFileSync(path.join(dir, segment.filename), Buffer.from(content));
        });
    }
}

Integration with baha-anime-dl-ext for Merging

import fs from "node:fs";
import { Downloader } from "baha-anime-dl";
import { merge } from "baha-anime-dl-ext";

const SN = 34886;

main();

async function main() {
    const downloader = new Downloader();
    const download = downloader.download(SN);

    const mp4 = await merge(download);
    fs.writeFileSync(`${SN}.mp4`, mp4);
}

Why Would You Need This?

My use case is for audio analysis, particularly to identify opening and ending songs in anime episodes. Here are some additional ideas:

• Conducting audio analysis for various purposes.
• Training a video upscaler model, though this could require additional authorization steps.

Feel free to dive in and explore the potential of Bahamut Anime Downloader!