convert.express

Convert MP4 video to text

Upload an MP4 file and get a transcript of what's said — no need to extract the audio first.

Drag a file here or browse

MP3, WAV, M4A, FLAC · MP4, MOV, MKV, WebM · up to 2 GB

Set language, translation, or vocabulary hints below before transcribing

OR

YouTube, Dropbox, Google Drive, or any direct MP3/MP4 link

Not applied on Gemini 3.5 Transcribe — the model can't combine vocabulary hints with word-level timestamps

.mp4 accepted directly · up to 2 GB · 10 minutes free every day

How it works

1

Upload your file

Drag and drop your .mp4 file onto the box below, or paste a link. No account needed to start.

2

AI transcribes it

OpenAI Whisper, Microsoft MAI-Transcribe 1.5, or Google Gemini 3.5 Transcribe converts the audio to text, detecting the language automatically.

3

Download the transcript

Get plain text back, plus SRT and VTT subtitle files when the recording carries timing information.

4

Generate more

From the finished job, request an AI summary, an action list, or a translation into any of 103 languages — applied straight to the completed transcript, no re-upload needed.

About .mp4 files

MP4 is a container format, not an audio codec — it bundles a video track, an audio track (almost always AAC), and metadata into one file. That matters here because you don't need to pull the audio out separately before transcribing: the video track is simply ignored, and the AAC audio inside is what actually gets transcribed.

MP4 is the closest thing to a universal video format — every phone camera, most screen recorders, and every major video platform either produce or accept it. That makes it the most common upload on this page by volume, spanning everything from a phone-shot clip to an exported Zoom recording to a downloaded webinar.

File size on an MP4 is driven almost entirely by the video, not the audio — a screen recording or talking-head video at 1080p can run several hundred megabytes per hour even though the actual spoken audio inside is a fraction of that. Uploading the MP4 as-is is fine and needs nothing extra; if you only need the transcript and the video itself doesn't matter, a smaller upload isn't necessary but is possible — most screen recorders and phone apps have an "export audio only" option if you go looking for it.

Upload the MP4 as-is. The transcript comes back as plain text, with SRT and VTT subtitle files available alongside it — handy if you're adding captions back onto the same video afterward.

Where these files usually come from

  • Phone camera video
  • Screen recordings (Loom, QuickTime, OBS)
  • Downloaded webinars and online course videos
  • Video exported from an editing timeline

Things to know

A long screen recording or talking-head video can run into the hundreds of megabytes or more per hour, almost entirely from the video track, which slows the upload even though only the audio is used.

This only matters if the upload is slow or the file is close to the 2 GB limit — otherwise, upload the MP4 as-is. If you do want a smaller, faster upload, most screen-recording tools and phone apps can export or save just the audio, and the transcript comes out identical either way.

Simple pay-as-you-go pricing

10 minutes free every day. Beyond that, €0.02/minute with a €0.50 minimum — no subscription. Files are automatically deleted within 24 hours.

See full pricing →

Frequently asked questions

Do I need to extract the audio from my MP4 before uploading?
No. Upload the MP4 directly — the video track is ignored automatically and only the audio inside is transcribed.
Will the transcript include what appears on screen, like slide text?
No. Transcription works from the audio track only. Text visible in the video but not spoken aloud will not appear in the transcript.
Can I get subtitles I can add back onto the video?
Yes. SRT and VTT files download alongside the plain-text transcript whenever the recording carries timing data, ready to load into a video editor or upload directly to platforms that accept caption files.
Is there a limit on video length?
Files up to 2 GB are accepted. Since video takes up far more space than audio, this is a lower duration ceiling than for audio-only formats — a highly compressed 1080p video can still run several hours within that limit.
Does the video resolution affect transcript accuracy?
No. Resolution is a video property and has no effect on the audio track or transcription accuracy.

Already have subtitles, not audio?

If you're trying to convert an existing SRT or VTT file rather than transcribe new audio, the browser-based subtitle tools handle that instantly, with nothing uploaded anywhere.

See subtitle tools →
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