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將 MP4 影片轉錄為文字。自動擷取音訊。

直接上傳 MP4 檔案。音訊軌道在伺服器端擷取、轉錄，並以附時間戳記的說話者標記逐字稿，以及可直接重新上傳的 SRT 字幕形式回傳。

Drop a file, or pick one

MP3 · WAV · M4A · MP4 · MOV · MKV · OGG · OPUS · FLAC · WEBM — up to 100 MB anonymously

Paste a link, we’ll fetch the audio

YouTube · TikTok · Vimeo · Twitter · SoundCloud · Spotify · 50+ more

Record straight from your browser

Sign up takes 30 seconds — recording opens right after, in the dashboard.

No card required~90s per 60-min fileSRT · VTT · DOCX · TXTFiles auto-deleted in 24h

↓ Watch what happens

Audio in. Transcript out.

Drop a file, paste a URL, or record live — text appears back with speaker labels and timestamps. Same pipeline whether the source is a file, a URL, or your microphone.

Microphone · liveREC 00:07.41
en-US auto-detected16 kHz mono
~90s
Transcript · streaming2 speakers · 47:08
S1

Thanks for making the time. I want to start with framing — what was the original hypothesis behind the project?

S2

Honestly, maybe forty percent. The shape held — the mechanics underneath had to be rebuilt almost entirely.

S1

What flipped it for you? Was there one customer call, one piece of data

~95% accuracy on clean audioSRT · DOCX · TXT · JSON

↓ This is the dashboard

This is what loads when the job finishes.

Same layout as the real dashboard — Summary, full Transcript, Speakers tab, Exports. Key points and action items extracted automatically. Auto-tags on every job.

Try it on your own file — it's free

Three real options · honest comparison

Built-in dictation, AI speech-to-text, or a human transcriber.

Three legitimate ways to get text from spoken audio in 2026. Each is best for different work. Honest numbers below — no claim that AI matches a professional human transcriber on hard audio.

Option 01

Built-in dictation

Live, free, on-device. Handy for short bursts while you talk.

Accuracy · clear English~85%
Speaker separationNo
TimestampsNo
Languages~30
60-min fileLive only
CostFree
Best forShort voice notes while you walk. Hands-free messaging. Dictating an email at a stoplight.
Option 02

AI speech-to-text

~30× faster than realtime. 100+ languages. Speaker labels. The sweet spot for most work.

Accuracy · clear English95%+
Speaker separationYes (Pro+)
TimestampsPer sentence
Languages100+ auto
60-min file~90 s
Cost · per min$0.03
Best forInterview recordings · meeting notes · podcast transcripts · YouTube subtitles · batch jobs · API automation · field journalism.
Option 03

Human transcriber

Gold-standard accuracy when the audio is hard or the stakes are legal.

Accuracy · clear English98–99%
Speaker separationManual
TimestampsPer turn
LanguagesPer transcriber
60-min file4–8 hours
Cost · per min$1–3
Best forLegal depositions · medical dictation · archival oral history · anything where 95%+ accuracy is non-negotiable.

Built-in dictation figures from public iOS / Android speech API benchmarks. Human transcriber rates from US/UK industry surveys 2024–2025.

Accuracy · real-world numbers

95%+ on clear English. It holds up on real-world recordings too.

Modern transcription reaches 95%+ word accuracy on clear English at 128 kbps and above, comparable to a human transcriber on the same recording. The audio coming in sets the ceiling — cleaner source, cleaner transcript. The breakdown below covers the recordings we actually see in production.

97%+
Clean studio audio

USB or studio microphone in a treated room. Single speaker at conversational distance. The headline number.

95%+
Clear English at 128 kbps+

Podcast masters, interview recordings, well-mic'd meetings. The sweet spot for most professional work.

93%
Real-world podcast

Field-recorded interviews, podcast episodes at 64–128 kbps, multi-speaker recordings. Usable for editorial without a review pass.

91%
Meeting room recording

Ceiling mic, omnidirectional capture, mild reverb, multiple speakers at distance. Plan a rename pass on the speaker chips.

Common questions

6 things people ask about this.

01我是否需要在上傳前先將音訊從 MP4 中提取出來？+
不需要。直接上傳 MP4 檔案。音訊會於伺服器端在轉錄流程中自動擷取。先轉換成 MP3 只是多一個步驟，而且使用低位元速率時可能降低音訊品質。
02支援哪些影片格式？+
支援 MP4、MKV、MOV、AVI 和 WebM。任何內含標準音訊編碼（AAC、MP3、AC-3、Opus、PCM）的影片容器皆可運作。如果您的格式未列出，嘗試上傳看看 — 大多數標準影片檔案都可運作。
03逐字稿的時間戳記會與影片對齊嗎？+
會。時間戳記錨定於您上傳檔案中的確切位置，包括開場、標題卡或開頭的靜音部分。如果您希望轉錄從特定時間點開始，請先修剪影片 — 但大多數使用者不需要這麼做。
04我可以從 MP4 獲得 SRT 字幕嗎？+
可以。直接從轉錄頁面匯出 SRT 或 VTT 格式，然後上傳至 YouTube、Vimeo 作為字幕，或匯入您的影片編輯器。時間戳記對應原始影片位置。
05MP4 檔案的最大大小是多少？+
免費方案：100 MB（約 10–15 分鐘的 1080p 影片），每檔案最多 30 分鐘。Pro 方案：2 GB（約 60–90 分鐘的 1080p 影片，低位元速率可更長），每檔案最多 10 小時。Business 方案：5 GB（可達數小時的 1080p 影片），每檔案最多 10 小時。對於長時間高位元速率的匯出，Business 方案結合了更高的容量上限與優先佇列。
06我可以轉錄 MP4 格式的 Zoom 錄影嗎？+
可以。從您的 Zoom 帳戶（雲端或本地錄影）下載 MP4 格式的 Zoom 錄影，然後在此上傳。說話者日誌功能可區分主持人與參與者音訊。本地錄製的主持人端預期可達 95% 以上準確度，遠端參與者音訊則約 88–92%。

Drop something in. See what comes out.

每月 30 分鐘免費，無需信用卡。上傳任何 MP4 檔案 — 大約 90 秒內即可獲得逐字稿、說話者標記和 SRT 字幕。

開始免費轉錄