Bilibili Video Downloader
Pulls B站 videos at the platform's highest available bitrate, captures both .ass subtitles and danmaku side-tracks, and works behind the geo-fence.
Why download Bilibili videos with ViralMint?
Bilibili splits long videos into multiple 'pages' (P1, P2, P3...) and gates higher-resolution streams behind both account-level (Lv.6+) and geo-IP checks. ViralMint's downloader resolves the multi-page format automatically — point it at any page URL and it offers the whole series or just that segment. For HD beyond 480p, sign into your Bilibili account in a browser, export the cookies via Settings → Cookies, and the desktop app will use them. Both Chinese and bilingual auto-generated subtitles are saved alongside the mp4 as .ass files so Whisper has a reference if you want to translate the script.
How to download from Bilibili
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Copy the Bilibili video URL
From bilibili.com, copy the share or page URL — e.g.
https://www.bilibili.com/video/BV1xx411c7mD -
Paste it into ViralMint
Open the ViralMint desktop app and paste the URL into chat. The planner detects the Bilibili URL and triggers the download automatically — no flags, no command line.
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Get the mp4, transcript and AI insights
The video lands in the Videos page with a local Whisper transcript and AI-extracted hook / structure / tone — ready for clip extraction or repurposing.
Frequently Asked Questions
Why does Bilibili limit me to 480p without an account?
B站 gates 720p+ behind account-login and 1080p+ behind paying-member or Lv.6 verified accounts. ViralMint inherits whatever your account is entitled to — sign in via Settings → Cookies and you get the same quality the web player would serve you.
Can it download multi-part series in one call?
Yes. Paste any P1 URL, ViralMint detects the series and asks if you want one part or all. The Channels view will also pull a creator's recent uploads automatically.
What about danmaku (弹幕) overlays?
ViralMint saves danmaku as a separate .xml file next to the mp4 so you can study comment patterns without burning the overlay into the video itself. Useful for outlier analysis — the comment density around a specific timestamp signals which moment hooked viewers.
How ViralMint compares to other Bilibili downloaders
| Approach | Examples | Trade-off | ViralMint advantage |
|---|---|---|---|
| Online converters | Y2mate, SaveFrom, ssyoutube, OnlineVideoConverter | Pop-up ads, redirects, quality capped at 720p, file-size limits, no batch downloads, your URL logged to ad networks | Local app, zero ads, original quality (up to Up to 4K (with verified account cookies)), unlimited file size, batch mode |
| Browser extensions | Video DownloadHelper, FastestTube, similar Chrome / Firefox add-ons | Routinely broken after Bilibili updates, removed from stores for ToS violations, no transcript or AI analysis | Updates with yt-dlp upstream (community-maintained), independent of browser extension stores, Whisper transcript built in |
| yt-dlp command line | yt-dlp, youtube-dl | Most flexible option but requires terminal comfort, manual cookie handling, no GUI for batch selection | Same yt-dlp under the hood, wrapped in a desktop GUI with cookie auto-detect, batch UI, and post-processing pipeline |
| Closed-source desktop apps | 4K Video Downloader, Allavsoft, ByClick Downloader | Closed-source, paid tiers gate batch and HD, no AI pipeline, no extensible Whisper / FFmpeg post-processing | Open source (AGPL-3.0), AI features prepaid per-action, integrates with the rest of the ViralMint creator pipeline |
Supported URL Example
https://www.bilibili.com/video/BV1xx411c7mDEquivalent yt-dlp command
If you already use yt-dlp, the desktop app's Bilibili download is equivalent to running:
yt-dlp -f "bv*+ba/b" --merge-output-format mp4 "https://www.bilibili.com/video/BV1xx411c7mD"ViralMint also auto-runs Whisper transcription, downloads the thumbnail, and extracts AI hook / structure / tone insights — steps that take a separate command chain in raw yt-dlp.