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Drop the MP4 in as it is. AskSia reads the audio track directly, no ffmpeg, no separate MP3 bounce, no codec settings. Saves a step that adds up across dozens of files.
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MP4 to Text
The fastest way to transcribe MP4 videos, in any language.
AskSia transcribes any MP4 video file into accurate, timestamped text in seconds. Drag and drop a recorded Zoom call, a lecture capture, a screen recording, or a phone video, and AskSia returns a clean transcript with speaker labels and an optional translation in 40+ languages. No audio extraction, no conversion, no waiting. Free to start, no credit card required.
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asksia.ai/transcribe
LIVE · 00:19:16
Transcribing
EN → 中文 · 日本語 · 한국어
1
Prof. Chen 0:00Okay, so today we're covering the Fundamental Theorem of Calculus. It connects differentiation and integration in one elegant result.
🇩🇪 Heute behandeln wir den Hauptsatz der Differential- und Integralrechnung.
2
Student 0:53Could you explain how the Riemann sum connects to integration at the limit?
🇯🇵 リーマン和が極限でどのように積分と関係するのか説明していただけますか？
1
Prof. Chen 1:21LIVE4:32
19:16
Quick Answer
How do you transcribe an MP4 file to text?
To transcribe an MP4 file to text, you upload the video file or paste a direct MP4 link, and AskSia processes the audio track with AI speech recognition. There is no need to extract audio or convert to MP3 first. The output is a timestamped transcript with up to 10 speakers labeled automatically, ready to translate into more than 40 languages or export as TXT, DOCX, or SRT subtitles. The free plan covers MP4 files up to 30 minutes, with no software to install and no credit card required.
2M+
students using AskSia
40+
languages supported
<0.1s
transcription latency
95%+
accuracy on clear audio
Why AskSia
What makes AskSia a strong tool to transcribe MP4 files.
MP4 is the format almost every camera, phone, and screen recorder produces. AskSia handles MP4 directly so you skip every audio-extraction step that other transcribers force on you.
Accurate on real-world MP4 audio
Phone videos and screen recordings rarely have studio-quality audio. AskSia stays usable in those conditions and reaches 95% or higher accuracy on clear audio thanks to context-aware processing for technical vocabulary, names, and academic terms.
95%+ on clear audio
Speaker labels for any video
AskSia identifies up to 10 distinct speakers in a single MP4, color-codes their turns, and timestamps each one. Rename them after the fact, for example 'Host', 'Guest', or 'Student A', and the change applies to the whole transcript.
Up to 10 speakers, renameable
SRT subtitles ready for upload
Export the transcript as an SRT subtitle file and upload it directly to YouTube, Vimeo, or any video editor. Useful for adding captions to your own MP4s, repurposing recordings for accessibility, and translating videos for international audiences.
SRT, DOCX, TXT, Google Docs
How It Works
Transcribe an MP4 in three steps.
Step 01
Upload the MP4 or paste a link
Drag the MP4 into AskSia or click upload to pick it from your computer or phone. You can also paste a video URL if the MP4 is hosted online. AskSia transcribes the audio track directly without an extraction step.
Audio Source
Microphone
Live audio around you
Browser Tab
Zoom, YouTube, Meet
Upload File
MP3, MP4, WAV, M4A...
Step 02
Pick languages and detect speakers
AskSia auto-detects the source language. Pick any target language for translation, and the transcriber identifies up to 10 different speakers in the recording without manual setup.
Language Settings
Source
English (US) ▾
Translate
中文 (简体) ▾
Speakers
Auto-detect ▾
Start Transcribing →
Step 03
Read, search, export
Read the transcript with timestamps and speaker labels. Search across the MP4 by keyword, ask Sia for a summary or quotes, and export as TXT, DOCX, SRT, or send to Google Docs.
P
Prof. Smith"...the Fundamental Theorem connects differentiation and integration..."
🇨🇳 微积分基本定理将微分与积分联系起来...
S
Student"Could you explain the Riemann sum convergence?"
🇨🇳 您能解释黎曼和的收敛性吗？
Available On
MP4 transcription on every device.
Drag and drop on the laptop, upload from your phone, or paste a video URL from anywhere. One library holds everything.
🖥 Web App
Built for full-length videos
On the web, AskSia opens as a split panel with the transcript on one side and the AI chat on the other. Drop in an hour-long recorded meeting or a multi-part lecture MP4 and read along as it processes. Speaker labels are clickable, and you can search the whole video by keyword or speaker.
Drag-and-drop MP4 upload
Paste a YouTube, Vimeo, or direct video URL
Side-panel AI chat over the transcript
Export to TXT, DOCX, SRT, or Google Docs
Summarize key ideas
Create quiz
Export notes
📱 Mobile App
Upload MP4s straight from your phone
Open the app and pick an MP4 from your camera roll, share sheet, or files app. AskSia transcribes the video in real time on your screen and syncs the result to your Web App library when finished.
Upload MP4 from your phone library
Real-time text with speaker labels
Auto-sync with your Web App library
Offline reading for saved transcripts
1
ProfessorThe lecture is being captured...
中文翻译同步显示...
2
StudentCan you repeat the definition?
Use Cases
What people transcribe MP4 files for.
Recorded Zoom and Meet calls
The .mp4 export from Zoom, Google Meet, Webex, or Teams transcribes in seconds. AskSia handles speaker labels, timestamps, and translation, and exports the result as a clean meeting record.
MP4 from Zoom or Meet
Lecture captures and online courses
MP4 lecture captures from a university LMS, Coursera, edX, or a private folder transcribe with full speaker identification. Useful for review, accessibility, citation, and study in a second language.
LMS, MOOC, lecture capture
Webinars and conference recordings
Drop in the MP4 from a webinar, panel, or keynote and AskSia returns a transcript ready to repurpose into blog posts, internal notes, captions, or shareable summaries.
Webinar, keynote, panel
Phone videos and field recordings
Phone videos shot in MP4 format upload directly to AskSia, no conversion needed. Useful for journalism, qualitative research, and field-based content where the camera is also the recorder.
Phone video, field recording
Screen recordings and tutorials
Upload a screen capture, demo, or tutorial MP4 and AskSia produces a transcript you can use as documentation, captions, or a written walkthrough. Works with any common screen recording tool.
Screen captures, tutorials
YouTube and Vimeo downloads
Direct MP4 downloads from YouTube, Vimeo, and other video platforms transcribe with timestamps and speaker labels, ready for show notes, blog posts, or accessibility captions.
YouTube, Vimeo MP4
Compare
AskSia vs. traditional
transcription tools.
Most transcription tools are built for meetings. AskSia is built for how students actually learn: bilingual, fast-moving, context-heavy.
| Feature | AskSia Transcribe | Standard Transcription Tools |
|---|---|---|
| Real-time latency | ✓ <0.1s | ~2–5s delay |
| Simultaneous multi-language translation | ✓ 40+ languages, live | Post-processing only |
| Built-in AI chat during recording | ✓ Ask anything while live | Not available |
| Auto speaker identification | ✓ Up to 10 speakers | 2–5 speakers, often inaccurate |
| Bilingual / code-switching support | ✓ Mid-sentence detection | Single language only |
| Academic vocabulary accuracy | ✓ Context-aware | Generic dictionary |
| Auto-generate quizzes and flashcards | ✓ One-tap from any transcript | Export only |
| Browser Tab capture | ✓ No extension needed | Extension or integration required |
| Free to start | ✓ 30 min/file, unlimited sessions | Time-limited trial |
FAQ
Common questions about transcribing MP4 files.
How do I transcribe an MP4 file to text?
Drag the MP4 video file into AskSia, or click upload and select the file from your computer or phone. AskSia transcribes the audio track directly, with no need to extract audio first. The output is a timestamped transcript with up to 10 speakers labeled automatically, ready to translate into more than 40 languages or export as TXT, DOCX, or SRT subtitles. The free plan covers MP4 files up to 30 minutes.
Do I need to extract the audio from the MP4 first?
No. AskSia transcribes MP4 files directly. Drop the video in as it is, and AskSia handles the audio track for you. There is no need to bounce a separate MP3, run ffmpeg, or use a third-party audio extractor before uploading.
Is it free to transcribe MP4 files on AskSia?
Yes. AskSia is free to start with no credit card required. The free plan covers MP4 files up to 30 minutes each. AskSia Pro and AskSia Super remove the duration limit and unlock features like Google Docs export, higher-accuracy tiers, and the full AI study companion.
How long can the MP4 file be?
The free plan supports MP4 files up to 30 minutes per upload. AskSia Pro and AskSia Super remove the duration cap entirely, which is useful for full lectures, multi-hour interviews, recorded conferences, and long screen recordings.
How accurate is AskSia at transcribing MP4 videos?
On clear audio, AskSia reaches 95 percent or higher accuracy. Accuracy depends on the audio quality of the MP4, background noise, accents, and how many speakers overlap. The model uses context, which helps it correctly transcribe technical vocabulary, proper names, and academic terms that generic transcribers tend to misrecognize.
Can AskSia transcribe MP4 videos in other languages?
Yes. AskSia transcribes MP4 files in more than 40 languages and detects the source language automatically. You can also translate the transcript at the same time, so the original audio and a translated version appear side by side. Supported languages include English, Spanish, Mandarin, French, German, Portuguese, Japanese, Korean, Arabic, and Hindi.
Can I export the MP4 transcript as SRT subtitles?
Yes. AskSia exports the MP4 transcript as SRT subtitle files, which can be uploaded directly to YouTube, Vimeo, or used in any video editor. Other supported export formats include TXT, DOCX, and JSON, plus a one-click send to Google Docs.
Start Today
Drag in your MP4. Get a transcript out.
Whether it is a Zoom export, a screen recording, a phone video, or a lecture capture, AskSia transcribes any MP4 file into clean text in seconds. Free to start, no credit card.
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