Convert TTML to SRT
TTML — shipped variously as .ttml, .dfxp and plain .xml — is what broadcasters and streaming platforms hand out, and almost nothing outside that world will play it. This pulls the cues out of the XML, reads both time styles the spec allows, flattens the inline spans, and hands back a SubRip file. It runs in your browser, so the captions are never uploaded.
全部在你的浏览器里完成，文件不会上传。
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- 支持上传 MP3、MP4、M4A、MOV、AAC、WAV、OGG、OPUS、MPEG、WMA、WMV,视频自动提取音轨。
- 约 98 种语言,自动检测,基于专用 GPU 上的 Whisper 级引擎。
- 8 种导出格式:TXT、SRT、VTT、TSV、CSV、JSON、PDF、DOCX,还支持批量打包 ZIP。
- 说话人识别为每段标注发言者,点击任意句子即可回放对应原声。
常见问题
My file is .dfxp or .xml — is that the same thing?
Yes. DFXP was the old name for the same W3C specification, and plenty of tools simply write it out with an .xml extension. All three are accepted here, and the format is detected from the contents rather than the extension.
What gets dropped in the conversion?
Regions, styling and positioning — everything TTML expresses through its head section and style attributes, none of which SubRip has a field for. The cue text and its start and end times are what survive, which is all a player needs.
My cues use frame-based times and came out missing.
That is deliberate. Frame and tick offsets only mean something alongside the frame rate declared in the document, which this converter does not read, so those cues are skipped rather than given a plausible but wrong timeline. Re-export with clock times and they will come through.
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