Create standard timed subtitle files accepted by major editors and video platforms.
Convert Audio to SRT — Without Uploading Your Recording
Turn podcasts, interviews, lectures and voice recordings into timed subtitle files. VoiceMaster transcribes locally, keeps segment timestamps and exports ready-to-use SRT or WebVTT.
Step by Step
How to Convert Audio to SRT
Three steps, about a minute, zero uploads.
1
Import the audio
Choose an MP3, M4A, WAV, AIFF or CAF recording from Files, or record new audio directly in VoiceMaster.
2
Review the timestamped transcript
On-device speech recognition creates timed segments. Tap any line to hear the matching audio and correct names or terminology.
3
Export SRT or WebVTT
With Pro, export a standard .srt subtitle file or a .vtt caption file for your editor, video platform, course or website.
Highlights
Why VoiceMaster
Private on-device transcription with pro-grade output.
Export web-ready VTT captions alongside SRT, Markdown, text and JSON.
Unreleased episodes and confidential recordings never enter an online converter.
Verify every subtitle by jumping from its text directly to the source audio.
From MP3 or WAV to Timed Subtitles
Subtitle files are useful even when the source is audio-only. A podcast clip needs captions for social video, a recorded lecture needs accessible course material, and an interview excerpt needs timed text for an editor. SRT stores each caption with its start time, end time and text, making it the most widely supported handoff format.
VoiceMaster preserves timing during transcription instead of trying to reconstruct it after the fact. Import MP3, M4A, WAV or another supported audio format, review the linked transcript, and export SRT when the wording is ready. The same project can also produce WebVTT for browser video and learning platforms.
An Offline Alternative to Audio-to-SRT Websites
Online audio-to-SRT converters require a complete upload before they can begin. Large WAV masters take time, and private interviews or unreleased content become copies on third-party infrastructure. With VoiceMaster, speech recognition and timestamp generation happen locally on your iPhone, iPad or Mac.
The free tier lets you test transcription with 120 minutes each month. Pro unlocks SRT and WebVTT export and removes transcription limits; the lifetime option provides unlimited conversion without an ongoing subscription.
FAQ
Frequently Asked Questions
Can VoiceMaster convert MP3 to SRT?
Yes. Import the MP3, review its timestamped transcript, then use VoiceMaster Pro to export a standard SRT subtitle file.
Can I convert WAV audio to subtitles offline?
Yes. WAV transcription runs on-device, and Pro exports the timed result as SRT or WebVTT without uploading the recording.
What is the difference between SRT and WebVTT?
Both contain timed captions. SRT is widely accepted by video editors and platforms, while WebVTT is designed for web video and supports additional browser-oriented caption features.
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