Universal workbench

3GP speech to SubRip

Transcribe 3GP speech to SubRip entirely on this device with a revision-pinned Whisper model.

Device-onlyNo uploads. Ever.

Pipelines, branches, presets, naming, and detailed controls

Display

Text sizeDensity High contrast Monospace editor

Quick start

JSON → YAML WebP → PNG SVG → React JSX Plain text → Base64

From

Help me choose the best output Suggested: MP4

What matters most?

Recommendations use the registered target format and tested fidelity classification. They never inspect or upload your content.

01Input

Drop files or a folder hereChoose 3GP files or a folder — batch input is welcome

Choose files Choose folder

or paste content

02Configure & run

3GPSubRip

structural conversion · single or batch

Conversion preflightSize, memory, engine, execution, and fidelity before you start

Input: 0 B
Estimated peak memory: 256 MiB
On-demand download: Up to 78 MiB on first use
Execution: Responsive local worker
Fidelity: No lossy step declared

What to provideDrop one or more 3GP files. Codec support is checked by the on-demand media engine.What you’ll getProduces timestamped SubRip subtitles.

Spoken languageAutomatic detection works across supported languages. Choosing a language can improve accuracy and speed.Speech taskTranscribe keeps the spoken language. Translate asks multilingual Whisper to produce English.

Output naming & batch behavior

Filename templateAvailable variables: {output} (converter’s meaningful name), {name}, {target}, {ext}, {index}. Duplicate names receive a safe numeric suffix.

Exampleoutput.srt

Pipeline 1 linear · 0 branches

Why use A → B → C?

A pipeline feeds each result directly into the next compatible converter. Use one when the destination needs an intermediate representation or when you want to inspect and normalize that middle format.

JSON → CSV → XLSX turns records into rows before building a workbook.
Markdown → HTML → DOCX resolves markup before creating a document.
SVG → PNG → PDF intentionally flattens vector artwork before placing it on a page.

Only type-compatible next steps are offered. Lossy steps are marked before you run them.

13GP speech to SubRipstructural

Add compatible step

Parallel output branchesEach branch receives the final linear result. Branches do not feed or depend on one another.

Add a parallel destination

Add content above to start. Nothing leaves this browser.

Processing happens locally. Your file bytes are never sent anywhere.

About this conversion

How to convert 3GP to SubRip

Before you start

Drop one or more 3GP files. Codec support is checked by the on-demand media engine.

Accepted: .3gp · video/3gpp

Choose or drag one or more 3GP files onto the drop zone.
Confirm the detected format and adjust the available settings. Mixed-format batches are flagged before conversion.
Select “Convert on this device.” Produces timestamped SubRip subtitles.

How this converter behaves

Pinned OCR or speech-recognition models run locally after an explicit engine download. Recognized text, timing, and confidence data remain in this browser tab.

What happens to your data?

The conversion engine runs in this browser tab. OmniCastConverter has no upload API and never sends your content, file name, or converted result to a server.

Fidelity and limitations

This route is classified as structural. The converter preserves meaning and structure supported by both formats.

The quantized Whisper Tiny model prioritizes download size and local speed; difficult audio can benefit from a larger offline desktop model.