Get a Subtitle File From Your Audio
Upload an audio file and ScreenApp transcribes it, then lines the text up with timestamps so it downloads as a subtitle file. You get the SRT or VTT file to attach to a video, upload alongside a podcast episode, or add wherever a platform accepts a separate subtitle track.
ScreenApp does not turn the audio into a video with captions burned in. If you need the subtitles inside a video frame, add the SRT or VTT file to the video in your editor or through the platform’s own caption uploader, both of which take the file directly.
What you get:
- A transcript with timestamps, in 100+ languages
- Export the transcript as PDF, DOCX, TXT, SRT and VTT
- transcript and caption translation, for a second-language subtitle track
- Speaker labels when more than one person talks
- Free plan: 2 transcriptions of recordings up to 45 minutes each
How to Convert Audio to Subtitles
- Upload your audio: drag in an MP3, WAV, M4A file or a similar format, or record it directly in the browser.
- Get the transcript: ScreenApp transcribes the audio and matches the text to timestamps.
- Download the subtitle file: export as SRT or VTT and add it to your video, podcast host, or platform.
Accuracy depends on the audio. Clear, single-speaker narration transcribes best; overlapping speech or heavy background noise leaves more to review. See how we measure accuracy.
Audio to Subtitle Converter vs Other Apps
| Feature | ScreenApp | Sonix | HappyScribe | Kapwing |
|---|---|---|---|---|
| Free plan | 2 transcriptions, up to 45 min each | 30-minute trial | 10-minute trial | Free, limited minutes (not stated) |
| Subtitle file export | PDF, DOCX, TXT, SRT and VTT | DOCX, PDF, TXT, SRT, VTT | .SRT, .VTT, .STL | SRT, VTT, or TXT |
| Languages | 100+ | 54+ | 150+ | Not stated |
| Paid plan | $19/month annual | $25/month | $8.50/month annual | $16/month annual |
Sources, checked 2026-09-16: screenapp.io/accuracy#languages, ScreenApp pricing, sonix.ai/pricing, happyscribe.com/pricing, happyscribe.com/tools/add-subtitles-to-video, kapwing.com/subtitles/audio, happyscribe.com/audio-summarizer, kapwing.com/pricing
- vs Sonix: Sonix gives a 30-minute free trial, then $25 a month for the Core plan, and exports DOCX, PDF, TXT, SRT, VTT. ScreenApp’s free plan covers 2 transcriptions of recordings up to 45 minutes each with the same PDF, DOCX, TXT, SRT and VTT export options.
- vs HappyScribe: HappyScribe’s free plan is a 10-minute trial, and it also burns captions into an exported video, which ScreenApp does not do. ScreenApp gives you the PDF, DOCX, TXT, SRT and VTT files to add yourself.
- vs Kapwing: Kapwing exports SRT, VTT, or TXT and can also burn captions into the video. ScreenApp exports PDF, DOCX, TXT, SRT and VTT and adds transcript and caption translation for a second-language track, but leaves adding the file to a video to you.
Who Converts Audio to Subtitles
Podcasters transcribe an episode and export the subtitle file to attach to the video version they publish on YouTube or another platform that reads SRT and VTT.
Content creators turn a voice-over or narration track into a subtitle file before adding it to the video in their editor.
Businesses caption training audio and internal recordings so a video built from that audio has a subtitle file ready to attach.
Educators transcribe a recorded lecture or interview, then export the subtitle file for students who read along or use a screen reader.
International teams transcribe audio and use caption translation to produce a subtitle track for a different market without re-recording anything.
Radio and audio producers get a subtitle file to pair with a video cut of an audio segment for social or web publishing.
