Direct CC track detection
We query Bilibili metadata endpoints to discover creator-uploaded and platform-generated closed caption tracks.
Know before you download
Download Bilibili Subtitles: Export Timed Captions for Any Video or Episode
Whether you are transcribing a research lecture, studying Mandarin dialogue, or preparing bilingual subtitles for video production, our tool extracts existing Bilibili CC tracks and converts them into universal formats. Need the video file as well? Use our Bilibili Video Downloader to save the full MP4 file with audio merged.
Universal subtitle formats
Export tracks as SubRip (.srt), WebVTT (.vtt), plain text (.txt), or structured JSON without quality loss.
Multilingual support
Extract Simplified Chinese, Traditional Chinese, English, Indonesian, and other localized tracks available on the source.
A simple workflow
How to use this tool
- 1
Copy the Bilibili video link. Open the public video or Bstation episode in your browser or mobile app, tap Share, and select Copy link.
- 2
Paste the URL into the input field above and click Get Video & Audio. Our parser contacts Bilibili subtitle endpoints to locate available language tracks.
- 3
Switch to the Captions tab, choose your preferred language track, and click Download SRT, VTT, TXT, or JSON to save the file to your device.
Convert Bilibili CC to SRT, VTT, and TXT: Technical Cue Format Guide
Bilibili stores closed caption data in a proprietary JSON structure known as BCC format. Inside this structure, each spoken phrase is stored with fractional second timestamps representing start time, end time, and text content:
{
"from": 1.45,
"to": 4.12,
"location": 2,
"content": "大家好，欢迎来到本期技术分享！"
}While fractional timestamps work inside web players, desktop video editors and standalone media players require standardized subtitle containers. Our tool automatically calculates hour, minute, second, and millisecond timecodes, reformatting the cues into your chosen format:
| Format | Technical Structure | Best Suited For |
|---|---|---|
| SubRip (.SRT) | Sequential cue index, 00:00:01,450 --> 00:00:04,120, UTF-8 text lines | VLC player, MPC-HC, Premiere Pro, DaVinci Resolve, Final Cut Pro |
| WebVTT (.VTT) | WEBVTT header, period decimal timecodes, optional cue styling | HTML5 <track> elements, web video players, online learning portals |
| Plain Text (.TXT) | Clean dialogue text stripped of all timing and formatting tags | Language learning, personal study notes, LLM prompting, reading transcripts |
| Raw JSON (.JSON) | Structured cue arrays preserving original fractional timestamps | Software developers, automated translation pipelines, database archival |
Comparing Closed Captions, Burned-in Text, and Danmaku Comments
Users searching for Bilibili subtitles frequently encounter three distinct types of text on the platform. Understanding their technical differences prevents confusion when attempting extraction:
| Text Type | Delivery Method | Can It Be Exported as SRT? | Recommended Workflow |
|---|---|---|---|
| Closed Captions (CC) | Separate metadata text track (BCC JSON) | Yes, instantly | Use this subtitle downloader to export SRT or VTT |
| Hardcoded Subtitles | Rendered directly into video pixel frames | No (Requires OCR software) | Download MP4 and apply optical character recognition tools |
| Danmaku Comments | Real-time floating user messages (XML/Protobuf) | No (Not dialogue subtitles) | Read our danmaku guide for commentary formats |
Multi-Part Video Synchronization and Chapter Timing
A single Bilibili upload frequently contains multiple episodes or chapters under one parent BV identifier, formatted with URL parameters such as ?p=1, ?p=2, and ?p=3.
Every individual part features its own independent subtitle timeline starting at 00:00:00,000. If you attempt to load a caption file from Part 1 alongside a downloaded video file of Part 2, the subtitles will be completely out of synchronization. Always verify that your pasted link points to the intended chapter before downloading your subtitle file. To navigate collections effectively, consult our Bilibili Playlist Downloader.
Bstation Localization and Multilingual Track Availability
On Bstation (bilibili.tv), Bilibili serves licensed international anime and variety programming across Southeast Asia. These releases often provide multiple professional subtitle tracks, including:
- English (en-US): Official English localization for international audiences.
- Indonesian (id-ID): Bahasa Indonesia subtitles for Southeast Asian viewers.
- Thai (th-TH) & Vietnamese (vi-VN): Regional translations for regional viewers.
- Simplified & Traditional Chinese: Original broadcast dialogue tracks.
When you paste a supported Bstation video or episode URL, our parser inspects all available audio and subtitle tracks, displaying every accessible language in the Captions dropdown menu. For full video archival of international releases, see our Bstation Downloader.
Bilibili Subtitle Downloader: Fast and Accurate Caption Archiving
Archiving captions allows creators, translators, and students to access valuable educational and cultural material without bandwidth constraints. Whether you need an SRT file to accompany an offline lecture, a plain text transcript for study notes, or raw JSON cues for software analysis, BiliDownloader provides an accurate, zero-friction solution.
Explore our complete media archiving suite:
- Bilibili Video Downloader: Download complete videos in MP4 format with audio merged.
- Bilibili to MP3: Save audio tracks, speeches, and podcasts as MP3 files.
- Bilibili Thumbnail Downloader: Extract full-resolution master cover graphics.
- Bilibili Playlist Downloader: Inspect multi-part chapters and creator collections.
- Bstation Downloader: Save licensed anime and shows from bilibili.tv.
Clear answers
Frequently asked questions
Can I download Bilibili subtitles as an SRT file?
Yes. When a public Bilibili video has an accessible closed caption (CC) track, our tool extracts the raw timestamp data and converts it into standard SubRip (.SRT) format with sequential cue numbers and millisecond timecodes.
Can this tool generate a transcript if the video has no subtitles?
No. This tool extracts official caption tracks uploaded by creators or generated natively by Bilibili. It does not perform server-side audio transcription or hallucinate speech text for videos that lack subtitle tracks.
Are Bilibili AI-generated subtitles available for download?
Yes, provided that Bilibili has processed the video and exposes the automated caption track publicly on the video page. If Bilibili displays an AI caption option in its player, our tool detects and extracts it.
Are danmaku bullet comments included in the subtitle download?
No. Danmaku comments are scrolling viewer messages stored in separate XML or protobuf formats. This tool extracts dialogue closed captions. For information regarding scrolling viewer comments, see our dedicated danmaku guide.
Can I export subtitles from multi-part (P1, P2, P3) Bilibili videos?
Yes. Each chapter of a multi-part upload has an independent subtitle track with timestamps starting at zero. Make sure you select the correct part before downloading your caption file.
Can I download subtitles from Bstation (bilibili.tv) anime and shows?
Yes. Supported public bilibili.tv episodes expose multilingual subtitle streams including English, Indonesian, Thai, and Vietnamese. Our parser lists all accessible localized languages in the Captions menu.
Are downloaded subtitles embedded directly into the MP4 video?
No. Subtitles are exported as standalone text files (.srt, .vtt, .txt, or .json). You can load the SRT file into media players like VLC or import it into video editing software alongside your downloaded MP4 file.
Will downloading an SRT file automatically translate Chinese speech to English?
No. The converter formats the existing text and timing accurately. It does not perform automated machine translation. You will receive an English subtitle file only if an English caption track exists for the video.
Why does the Captions tab show that no subtitles are available?
This occurs when a video has hardcoded text burned directly into the video pixels without a separate CC data track, or when caption tracks are restricted behind platform login checks.
Where are downloaded subtitle files stored on iPhone and Android devices?
On iPhone and iPad, downloaded files appear in the Safari Downloads manager and the Files app. On Android devices, files save to your browser downloads list and the device Downloads folder.
About BiliDownloader Subtitle Tool
BiliDownloader is an independent utility created to assist students, linguists, and digital video editors in archiving multimedia assets. We maintain our parser against Bilibili API updates to ensure consistent caption discovery and clean timecode conversion.
Tested and verified: October 2026 · Engineering Notes · Report an Issue · Copyright Policy