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Overview

Danmaku(XML) to ASS Converter

High-performance XML to ASS subtitle converter. Transform Bilibili/AcFun danmaku into high-quality, collision-free subtitles for Potplayer, IINA, VLC, and Movist.

What is How to use Example Common use cases Frequently asked questions

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#convert-xml-subtitles-to-ass #bilibili-to-ass-converter #xml-to-ass-converter #bilibili-danmaku-download #collision-free-danmaku

Danmaku XML → ASS Converter

Convert Bilibili / AcFun danmaku XML to collision-free ASS subtitles for VLC, PotPlayer, IINA.

Source Danmaku (XML)

Width

Height

Font Size

Speed (s)

What you can solve

How to watch bilibili danmaku in IINA?

Online xml to ass converter for mac?

Most professional local players cannot render XML directly. ASS is a powerful subtitle format that supports the precise positioning and motion needed for scrolling danmaku.

Bilibili danmaku overlapping fix?

The tool assigns each danmaku to a specific 'track' (vertical lane). It calculates the speed and length of each string to ensure new comments don't catch up to or overlap with previous ones.

Convert dandanplay xml to ass subtitles?

Yes. This tool runs entirely in your browser using TypeScript. Your XML files are never uploaded to any server.

Best tool for local danmaku playback?

It converts the proprietary XML danmaku format used by Bilibili into the universal ASS (Advanced Substation Alpha) format, allowing you to enjoy 'scrolling comments' in professional local players like IINA, VLC, or MPV. Most professional local players cannot render XML directly. ASS is a powerful subtitle format that.

Typical workflow

Danmaku(XML) to ASS ConverterWebVTT to SRT Converter

Guides for this workflow

Supporting guides that connect this tool to the broader category workflow.

Open category hub

Media guide

Fansub Subtitle Workflow Hub: Danmaku, ASS, SRT, WebVTT

A practical workflow guide for fansub and anime subtitle pipelines: convert Bilibili danmaku to ASS, swap between ASS/SRT/WebVTT, and re-sync timing for different frame rates.

Media guide

Media Tools Hub: Image, Color, and Subtitle Workflows for Frontend Teams

A hub guide to image compression, color conversion, subtitle handling, and media utility workflows in the browser.

Web guide

400 vs 401 vs 403 vs 422: A Practical API Error Triage Workflow

A concrete debugging workflow for separating malformed requests, authentication failures, permission issues, and validation errors before your team fixes the wrong thing.

Web guide

Why Access-Control-Allow-Origin Star Fails with Credentials

A practical browser-first guide to diagnosing the most common credentialed CORS mistake: returning wildcard Allow-Origin while the frontend sends cookies or auth-bound credentials.

What is

What is Danmaku(XML) to ASS Converter?

Danmaku2ASS is an essential tool for anime fans and video enthusiasts. It converts the proprietary XML danmaku format used by Bilibili into the universal ASS (Advanced Substation Alpha) format, allowing you to enjoy 'scrolling comments' in professional local players like IINA, VLC, or MPV.

How to use

How to use Danmaku(XML) to ASS Converter

Simply paste your XML content or upload the .xml file. Adjust settings such as 'Font Size' or 'Duration' to match your video resolution, then click 'Convert'. The tool uses a specialized track-based algorithm to ensure danmaku don't overlap, creating a clean viewing experience.

Example

Input (XML):
<d p="12.5,1,25,16777215,... ">Hello World</d>

Output (ASS):
Dialogue: 0,00:00:12.50,00:00:20.50,Default,,{\move(1920,50,-500,50)}Hello World

Common use cases

1. Watching downloaded Bilibili videos on macOS with native players like IINA.

2. Converting large danmaku files (50k+ entries) without server-side lag.

3. Customizing danmaku transparency and size for better readability on 4K displays.

4. Archiving live stream comments into permanent, searchable subtitle files.

Frequently asked questions

Why use ASS instead of XML?v

Most professional local players cannot render XML directly. ASS is a powerful subtitle format that supports the precise positioning and motion needed for scrolling danmaku.

How does collision avoidance work?v

The tool assigns each danmaku to a specific 'track' (vertical lane). It calculates the speed and length of each string to ensure new comments don't catch up to or overlap with previous ones.

Is my data safe?v

Yes. This tool runs entirely in your browser using TypeScript. Your XML files are never uploaded to any server.