视频工具

AI Auto Subtitle & Video Caption Generator

AI Auto Subtitle & Video Caption Generator帮助您在浏览器中快速获得结果 — 免费且无需注册。

100% 免费
浏览器内运行（100% 私密）
最近更新 11月 9, 2026

打开工具

100% Client-Side & Private

Instant Subtitle Timing

Unlimited Free Video Transcriptions

SRT, VTT, TXT & Burned-In MP4

AI Auto Subtitle & Video Caption Generator

Automatically transcribe speech in your video and audio into word-level timed subtitles. Fine-tune timestamps, style TikTok-ready animated captions, translate into 40+ languages (Urdu, Hindi, Italian, Arabic & more), and export clean SRT/VTT files or captioned video.

Upload Video or Audio Zero data upload — files are processed directly on your machine

Drag & drop video or audio here, or click to browse

Supported formats: MP4, MOV, WebM, MP3, WAV, AAC, M4A

Max File Size: 250 MB Max Duration: 45 Mins Auto Language Detection RTL Urdu / Arabic Ready

Reading File Extracting Audio AI Speech Recognition Aligning Timestamps

Processing... 0%

Video Preview & Dynamic Captions 00:00 / 00:00

Subtitles will preview here in real-time

Sync Offset: ms

Editable Subtitle Timestamps

Click any timestamp to seek video. Edit text in real-time. Captions stay 100% synchronised.

Total: 0 segments

Export & Download Options Synchronised & Verified

Caption Typography & Appearance Changes apply instantly to live video preview and exported video

Font Family

Caption Position

Text Color & Background

Animated Word Highlighting (Karaoke)

Highlight spoken word in bright yellow

Font Size: 22px

Enable Right-to-Left (RTL) Layout (Urdu & Arabic)

AI Subtitle Translation Translate existing subtitles while preserving exact millisecond timecodes

Detected Source Language

Translate To Target Language

How AI Auto Subtitle Generator Works

Upload your media: Drop any MP4, MOV, WebM video or MP3, WAV audio file. Processing starts locally inside your browser.
Speech recognition: High-precision acoustic and language models detect phrases, pauses, and speaker pacing to generate clean timed segments.
Review & Edit: Use the interactive caption table to adjust wording, fix proper names, and fine-tune start/end timestamps. Clicking any line seeks the video instantly.
Style & Brand: Customize font family, colors, karaoke-style active word highlighting, and enable RTL for Urdu or Arabic text.
Export: Download standard industry subtitle formats (.SRT, .VTT, .TXT) or export your video with permanently burned-in captions.

如何使用 AI Auto Subtitle & Video Caption Generator

第 1 步
打开工具并添加输入或文件。
第 2 步
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AI Auto Subtitle & Video Caption Generator 功能与特点

尽可能在浏览器中私密处理
免费使用，无需账户
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支持桌面和移动浏览器

AI Auto Subtitle & Video Caption Generator 使用指南

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AI Auto Subtitle & Video Caption Generator 常见问题解答

这个工具免费吗？

是的。ToolSphare上的此工具免费，无需账户。

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不需要。打开工具即可立即开始。

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此工具的热门搜索

When content creators, social media marketers, and educators search for automated caption tools, they most frequently look for solutions matching queries like auto subtitle generator free online, generate SRT file from video without watermark, and create TikTok animated karaoke captions. Video producers commonly need an effortless way to transcribe spoken speech into readable segments with millisecond timestamp precision, avoiding the tedious manual labor of typing subtitles by hand.

Another prominent search intent centers on international localization and multi-language support, with searchers seeking Urdu auto subtitles with Nastaliq font, Hindi video caption generator, and translate English video subtitles to Italian or Arabic. ToolSphare addresses these exact workflows by running private speech recognition directly in your web browser. You can edit synchronized cues, customize font outlines, colors, and positioning, and download standard SubRip (.SRT), WebVTT (.VTT), or export a fully captioned MP4 video ready for social publishing.