Paste a public Bilibili (B站) video link. Savio fetches the MP4 file for you.
Free desktop app
Free to download. It runs yt-dlp right on your computer — so it works with more sites than the web tool, with no servers in between.
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Savio is a web-based Bilibili (B站) video downloader built on yt-dlp, with server-side FFmpeg that merges Bilibili's separate video and audio streams into one playable MP4. Bilibili's catalog is unlike a Western feed: long-form tutorials, anime music videos (AMVs), indie original MVs, game commentary, study-with-me sessions, and dense danmaku culture. Paste a public bilibili.com or b23.tv link, and Savio fetches the best available video and audio Bilibili exposes to a guest and stitches them back into a single MP4 with sound. That merge step matters here because Bilibili delivers high-resolution media as separate DASH segments, so a naive grab often produces a silent file. There is no sign-in, nothing to install, and no browser extension. Savio returns one MP4 at the best quality available for that link — there is no quality picker and no format conversion. It honestly cannot reach 大会员 (Premium) members-only episodes, paid courses, or content geo-locked to mainland China, because Bilibili does not hand those streams to an anonymous request. Quality depends on what the page exposes to a guest; many public videos are reachable at a good resolution, while 1080p60 and 4K tiers are frequently gated behind a Bilibili login. Bilibili's media URLs are signed and time-limited, so a working link can expire — re-paste to refresh it.
Bilibili uses DASH and serves the picture and the audio as two separate streams, so a simple grab often saves only the video track. Savio downloads both and merges them with server-side FFmpeg, so the MP4 you get from a public link includes sound.
No. Premium episodes, paid courses, and anything gated behind a Bilibili login are not accessible to an anonymous request. Savio only works with public, free-to-watch videos that expose a downloadable file to guests, and there is no bypass for that.
Whatever Bilibili exposes to a guest viewer. There is no quality picker on the web tool — Savio returns the best available video plus audio it can read for that link. We do not promise 4K: 1080p60 and 4K tiers are usually locked behind a Bilibili login or Premium, so they cannot be guaranteed.
Many Bilibili videos are geo-locked to mainland China and never serve a file to overseas viewers. If the video does not actually play in your own browser, Savio cannot reach it either. Public, region-open videos are the ones that work.
No. Savio downloads the merged video file only. It does not pull closed captions out as a separate .srt or .vtt file, so if you need subtitles you would source them elsewhere.
No. Danmaku is a real-time overlay rendered by Bilibili's player, not part of the video stream. The MP4 you download is the clean video without comments scrolling across it.
Not on the web tool. Savio returns a merged MP4 with the audio inside, not a standalone MP3 or audio-only track. MP3 extraction is planned for Savio Desktop, a paid desktop client that is coming soon — you can join the waitlist. For now you would extract the audio from the MP4 yourself.
No. The web tool resolves one video link at a time, with no bulk or playlist download. Batch downloading is planned for Savio Desktop, the paid desktop client coming soon, which you can join the waitlist for. For now, paste each part's individual URL separately.
b23.tv is Bilibili's short-link domain used in the app and on social media. You can try pasting it directly, but if it fails, open it in a browser first so it expands to the full bilibili.com/video/ URL, then paste that complete address.
It is free, runs entirely in the browser, and needs no sign-in or install — paste a public link and it returns a direct MP4. The honest limits are about access, not price: public videos work, while Premium, paid, login-gated, or China-only content does not. There is no Savio app to download; advanced features like 4K and batch are coming to the paid Savio Desktop client via the waitlist.
Bilibili hosts huge amounts of free coding, design and exam-prep content, often 30+ minutes long. Pull a public lesson as one MP4 so you can rewatch it on a flight or a slow overseas connection without buffering, and without danmaku scrolling across the screen. Savio merges the video and audio so the file plays with sound in any standard player.
Many musicians release original MVs and covers on Bilibili before anywhere else. When the upload is public, Savio merges the separate video and audio DASH streams into a playable MP4, so the track does not end up silent the way a raw stream grab often does. Note: Savio returns the merged MP4 with audio inside, not a standalone audio file.
If you are overseas and a public video still loads in your own browser, you can paste that link and save an MP4 for offline viewing. Titles geo-locked to mainland China will not resolve, because Bilibili never exposes a file to your region — if it does not play for you, Savio cannot reach it either.
Uploaders re-edit or take down videos, and Bilibili's media URLs are time-signed. Grab a public clip while the link is live rather than assuming it will still be there next month. Savio returns the best available video and audio merged into one file.
Savio returns Bilibili video as a single MP4 (typically H.264 video with AAC audio) for broad playback compatibility. Bilibili delivers media using DASH, meaning the picture and the audio arrive as two separate streams; Savio downloads both and uses server-side FFmpeg to merge them into one file with sound, which avoids the silent-video problem people hit when scraping Bilibili manually. There is no quality selector and no format conversion: Savio fetches the best video plus audio combination Bilibili exposes for that link and merges it, so the resolution you get is simply the best available to a guest rather than something you choose. We deliberately do not promise 4K — 1080p60 high-frame-rate and 4K tiers are usually reserved for logged-in or 大会员 (Premium) accounts, so they cannot be guaranteed and often are not reachable at all. Savio adds no watermark of its own. Subtitles and closed captions are not extracted as separate .srt or .vtt files, and danmaku (the floating community comments) is a player overlay, not part of the video stream, so it is never baked into the MP4. There is no MP3 or audio-only export, no playlist or multi-part batch download, and no thumbnail or cover-image extraction on the web tool. Higher-quality 4K downloads, batch queues, MP3 extraction and playlist support are planned for Savio Desktop, a paid desktop client that is coming soon — you can join the waitlist rather than expecting them on the web today. Bilibili's signed media URLs are time-limited, so download promptly after a link resolves.
The video is members-only or a paid course (大会员).
Savio cannot access Bilibili Premium episodes, paid courses, or anything behind a login. There is no workaround for login-gated content; use a public, free-to-watch video instead.
The merged file has no sound or the download stalls.
Bilibili serves video and audio as separate DASH streams, and Savio's server-side FFmpeg merge is meant to combine them. If a result seems incomplete, re-paste the link to fetch fresh streams; the final MP4 should contain both picture and audio once merging completes.
A B站 link works in China but fails for you abroad.
The video is likely geo-restricted to mainland China and never exposes a file to your region. Confirm the video actually plays in your own browser first — if it does not load for you, Savio cannot reach it either.
A b23.tv short link does not resolve.
Open the b23.tv link in a browser so it redirects to the full bilibili.com/video/... URL, then paste that complete address. Short links sometimes point to app-only or expired destinations.
You wanted just the audio, an MP3, or subtitles.
The web tool returns the merged MP4 video only — no audio-only/MP3 export and no separate .srt subtitle file. MP3 extraction is planned for Savio Desktop, the paid desktop client coming soon; you can join the waitlist. For now, you would extract audio from the downloaded MP4 yourself.
A link that worked yesterday stopped working.
Bilibili's media URLs are signed and time-limited, and uploaders also edit or remove videos. Copy a fresh public link from the current video page and resolve it again.
Answer Hub
Bilibili uses DASH and serves the picture and the audio as two separate streams, so a simple grab often saves only the video track. Savio downloads both and merges them with server-side FFmpeg, so the MP4 you get from a public link includes sound.
No. Premium episodes, paid courses, and anything gated behind a Bilibili login are not accessible to an anonymous request. Savio only works with public, free-to-watch videos that expose a downloadable file to guests, and there is no bypass for that.
Whatever Bilibili exposes to a guest viewer. There is no quality picker on the web tool — Savio returns the best available video plus audio it can read for that link. We do not promise 4K: 1080p60 and 4K tiers are usually locked behind a Bilibili login or Premium, so they cannot be guaranteed.
Download workflow
Paste a supported public URL above. Savio shows the download when the platform exposes a usable video file.
