Convert 3GP to SRT

Sonix transcribes your 3GP file and exports it as SRT subtitles that you can use with any video platform or editor.

Timestamped
5-min turnaround
All platforms
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DOCX
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About This Format

Understanding 3GP files

What is a 3GP file?

Mobile video format optimized for MMS and cellular networks

The 3GP file was created by the 3rd Generation Partnership Project Group (3GPP). It is primarily designed for transmitting multimedia files taken by cell phone videos and sending them over the Internet.
3GP is the required, standard format for media files sent using Multimedia Messaging Service (MMS) and Multimedia Broadcast Multicast Services (MBMS). Thus, the 3GP video container format was developed with the intention to save on disk space, bandwidth, and data usage, which is why they're often seen created from, and transferred between, mobile devices.

Common Uses

  • Cell phone video recordings
  • MMS multimedia messages
  • Low-bandwidth video streaming

Audio Quality

Highly compressed for mobile; audio quality may be limited

Transcription Tips for 3GP

  • Convert to MP4 for better processing if quality allows
  • Audio quality varies significantly by device

Where 3GP Files Come From

  • Older smartphones
  • Feature phones
  • MMS applications
10x
Faster than real-time
Get your 3GP SRT in minutes
99%
Accuracy rate
Industry-leading AI for 3GP files
53+
Languages
Subtitles in any language
30+
Export formats
SRT, VTT, text, and more
How It Works

Convert 3GP to SRT in 6 steps

Step 1

Create account

Sign up for Sonix's free trial. Includes 30 minutes free.

Step 2

Upload file

Upload your 3GP file from your computer or cloud storage.

Step 3

Select language

Choose from 53+ languages spoken in your file.

Step 4

Auto-transcribe

Sonix AI transcribes and timestamps your 3GP audio.

Step 5

Edit subtitles

Fine-tune subtitle timing and text with our editor.

Step 6

Export SRT

Download your 3GP subtitles as an SRT file.

Common Questions

Everything about 3GP to SRT

Can you convert 3GP to SRT subtitles?

Yes! Sonix transcribes your 3GP file with precise timestamps and exports it as SRT subtitles ready for any video platform.

What is an SRT file?

SRT (SubRip Subtitle) is the most widely supported subtitle format. It works with YouTube, Vimeo, Facebook, and all major video editors.

How accurate are the timestamps?

Sonix generates word-level timestamps accurate to the hundredth of a second, ensuring your subtitles sync perfectly with the audio.

Can I edit the SRT timing?

Yes! Our editor lets you adjust subtitle timing, merge or split captions, and customize character limits per line.

Does it work with YouTube?

Absolutely! Upload your SRT file to YouTube Studio and your subtitles will sync automatically with your video.

Can I set characters per line?

Yes! Customize your SRT with options for max characters per line, lines per caption, and maximum duration.

Why Sonix

Perfect SRT subtitles from 3GP files

Precise Timestamps

Word-level timing ensures your subtitles sync perfectly with the audio.

Universal Format

SRT works with YouTube, Vimeo, Facebook, and all major video platforms.

Customizable

Adjust timing, line length, and caption duration to your needs.

Editor Friendly

Import directly into Final Cut Pro, Premiere, DaVinci Resolve, and more.

Related

More ways to convert 3GP files

Other 3GP conversions

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Other file formats

FLV to text
MOOV to text
AVI to text
MPEG to text
MPE to text
M4V to text
RM to text
OGV to text
WEBM to text
MK3D to text
See all supported file formats
Reviews

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Very impressed of your product. The general concept is ingenious for the task to be accomplished and the implementation is impressive. Your product gives great satisfaction.
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Michael L.
Tel Aviv, Israel
I am a video editor and I found you by trying a few services with free trials. Sonix was far, far superior as well as an easy process to trial enroll.
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Polly W.
Guadalajar, Mexico
Fast and easy, and accurate. And searchable.
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Sue S.
Napierville, IL, USA
Sonix is so easy to use, and the quality is impressive in almost all languages we have tested so far. Punctuation is especially amazing compared to other platforms, even the tech g...
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Lucia G.
Barcelona, Spain
Sonix is quick and easy to use! It's efficient and transcriptions were very close to perfect - only a little editing needed!!
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Emma C.
London, England
I loved that Sonix supports so many languages. I've been working on a project that involves speakers of 6 different languages and it allows me to translate everything into English ...
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Paula G.
Sao de los Campos, Brazil
I have a 30-40 minute commute to work and like to dictate memos and other brief documents along the way–but I haven't had an easy way to get them transcribed...until now. Thanks Sonix!
ND
Nick D.
Waterloo, Ontario Canada
Wow. SPEED. Nice format, easy to read, liked the time stamps and speaker notification. Not a lot of formatting I had to strip before using. Simple.
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Becky B.
Washington DC, USA
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Create 3GP subtitles now

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