✨ AI transcription & translation

Any audio or video, into accurate subtitles & transcripts

Upload a file or paste a link. Get clean, time-coded transcripts with speaker labels — then translate into 20+ languages and export as SRT or bilingual Word. All in your browser.

⬆️
Drop a file to startor click to choose — audio, video or subtitle
🎧🎬🎙️📺
Free trial minutes on sign-up
Speaker labels
🌍 Bilingual export
niuma-online.com
00:02Speaker 1
Welcome back to the show, today we dig into AI.
欢迎回到节目,今天我们聊聊 AI。
00:09Speaker 2
The accuracy on multilingual clips is impressive.
多语言片段的准确率很惊艳。
Works with🎬 Video files🎧 Audio files▶️ YouTube📱 Short video
Multi-engineSpeech recognition
Chinese-friendlyDialects, accents & mixed speech
20+Translation languages
SRT · WordExport formats
One account

Five ways to get subtitles & transcripts

Pick the workflow that matches your file — same credits, same export quality.

Subtitle translation

Have an SRT already? Don’t re-transcribe.

General translators break timing or refuse subtitle files. Here you upload SRT/VTT/ASS and get bilingual subtitles with every cue aligned.

  • Timing preserved cue-by-cue
  • No video required
  • Export bilingual or translated SRT + Word

Upload subtitle file →

📄 demo.srt
1 00:00:02,000 --> 00:00:05,500 Welcome to the show. 2 00:00:06,100 --> 00:00:09,800 Today we talk about AI.
1 00:00:02,000 --> 00:00:05,500 欢迎回到节目。 2 00:00:06,100 --> 00:00:09,800 今天我们来聊聊 AI。
What you get

Files you can actually publish

Same transcript powers preview, translation, SRT and Word — no copy-paste between tools.

🎬 Bilingual SRT
1 00:00:02,000 --> 00:00:05,500 Welcome back to the show. 欢迎回到节目。
📑 Bilingual Word

Speaker 1

Welcome back to the show. Today we dig into AI and how teams actually use it.

欢迎回到节目。今天我们聊聊 AI,以及团队如何真正用起来。

👥 Speaker-labeled transcript

00:02 · Speaker 1
Welcome back to the show.

00:09 · Speaker 2
The accuracy on mixed clips is impressive.

Features

Everything you need to caption & translate

Purpose-built for creators, researchers and teams who care about getting the words right.

🎯

Multi-engine accuracy

Smart routing across multiple ASR engines picks the best model for each clip — strong on Chinese, English and mixed-language audio.

👥

Speaker diarization

Automatically tells speakers apart and labels “Speaker 1 / 2 …” in both transcript and subtitles.

🌍

Translate into 20+ languages

One click turns your transcript into another language, keeping the original timing intact.

📑

Bilingual, line-aligned export

Export a side-by-side bilingual Word document where every source line matches its translation.

🔗

Paste a link, skip the download

Drop a YouTube or short-video link and we fetch the audio for you — no downloading or converting by hand.

🔒

Runs in your browser

No install, no plugins. For video, only the audio track is uploaded — the picture never leaves your device.

📄

Translate existing subtitles

Upload .srt / .vtt / .ass — translate without re-running speech recognition. Timing stays locked to each cue.

AI transcript polish

After transcription, passages are merged and cleaned for readable subtitles and Word — you see progress while it finishes.

▶️

YouTube timing that stays in sync

Long videos keep accurate timestamps through the pipeline — subtitles line up with the picture when you export.

How it works

From upload to export — with visible progress

Upload, transcribe, polish, then download. Each stage shows its own progress bar in the app.

⬆️

1 · Upload

File or link

🎙️

2 · Transcribe

40–85%

3 · Polish

86–99%

⬇️

4 · Export

SRT · Word

Use cases

Made for the way you work with audio

🎬

Creators & YouTubers

Caption videos and add translated subtitles to reach a global audience.

💼

Meetings & interviews

Turn recorded calls and interviews into searchable transcripts with speaker names.

🔬

Researchers & students

Transcribe interviews and lectures, then translate quotes without losing timing.

📄

Subtitle translators

Upload an existing SRT and translate line-by-line — no broken cues, no re-transcription.

🎞️

Foreign films & courses

Downloaded mp4 files that YouTube plugins can’t help with — get readable bilingual subtitles offline.

🎙️

Podcasts & voice notes

Turn long audio into structured Word transcripts with speaker labels for editing or publishing.

Pricing model

Simple minute-based credits

No subscription. Top up once, use anytime — failed jobs refund automatically.

1:11 minute of media ≈ 1 credit minute (rounded up)
+25%Translation adds 25% on top of transcript minutes
Optional fast track uses 2× minutes when you choose it
Credits never expire · 20 min welcome on sign-up
Pricing

Pay once. Credits never expire.

No subscription, no monthly reset. Every new account gets 20 free minutes to start.

Starter

$4.99
1,200 minutes
For a first project or a quick batch
  • All engines & speaker labels
  • Translation & SRT / Word export
  • Credits never expire
Get Starter

Value

$19.99
7,000 minutes
For heavy workloads & long backlogs
  • Everything in Popular
  • Lowest price per minute
  • Stock up once, use for months
Get Value

Prices in USD. Translation uses 25% extra minutes; optional fast track uses 2×. Redeem codes are also supported.

FAQ

Questions, answered

What files and links can I use?+
Audio/video (mp4, mov, mkv, mp3, m4a…), subtitle files (.srt, .vtt, .ass), plus YouTube and short-video links. For video uploads, only the audio track is sent.
How accurate is the transcription?+
We route each clip to the best-matched engine from our multi-engine setup, which is especially strong on Chinese, English and mixed-language audio. Results are automated, so a quick review is always recommended.
Which languages can I translate into?+
20+ languages including English, Chinese, Japanese, Korean, Spanish, French, German and more — with the original timing preserved.
Do I need to install anything?+
No. Everything runs in your browser. Sign in with Google or email and start right away.
How much does it cost?+
New accounts get 20 free minutes. After that, buy credit packs — there’s no subscription and credits never expire.
How are subtitle files charged?+
Subtitle translation bills from subtitle duration and text length — no speech recognition step. Each translate run uses its own credits.
Are YouTube subtitles in sync?+
Yes — we prioritize native caption tracks with physical timestamps, so long videos stay aligned with the picture when you export SRT.
What if a job fails?+
Failed transcription or cloud errors trigger automatic refunds to your balance. You can retry or contact support from the app.
Do credits expire?+
No — one-time packs and redeemed codes stay on your account until you use them.
What is the fast track option?+
When the queue is busy, you can choose fast track to skip the wait — it uses 2× minutes for that job. You’re always shown the cost before confirming.

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