MP4, MOV, MKV, MP3 & WAV supported

Convert MP4 to SRT automatically

Turn any MP4 into an accurate SRT subtitle file without typing a word. Upload your video, Subpix transcribes the audio with AI, and you download properly timed SRT, VTT and ASS files — optionally translated into other languages — in minutes.

10 free minutes · No credit card · No subscription

See it in action

From link to subtitle file in seconds. No editor, no setup.

01

Upload your MP4

Drag in an MP4 (or MOV, MKV, MP3, WAV). No need to extract the audio yourself.

02

Pick output languages

Transcribe in the original language and translate into up to 5 more. Source language is detected automatically.

03

Download the SRT

Get a properly timed SRT, plus VTT and ASS, ready for any player, editor or platform.

Direct file upload

Works with MP4, MOV, MKV, MP3 and WAV — no conversion or audio extraction needed first.

Accurate, timed SRT

AI transcription with proper timestamps, so captions line up with the audio out of the box.

Translate while converting

Generate SRT files in multiple languages from a single upload in one step.

SRT, VTT & ASS

Get every common subtitle format, compatible with YouTube, Premiere, DaVinci Resolve and web players.

Your files, no watermark

Plain subtitle files you own and can use anywhere, forever.

Pay only for what you use

1 credit = 1 minute of audio per language. Credits never expire. No monthly fee.

Frequently asked questions

Turn your MP4 into subtitles now

10 free minutes included. No credit card. No subscription. Just subtitles.

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