How do I accurately convert my 3GP files to closed captions? 
Sonix uses the latest automated transcription technology to convert your video files (*.3gp) to closed captions. Follow these six steps and see how magical it is:
Step 1
Sign up for a free Sonix trial account—includes 30 minutes of free 3GP to captions conversion.
Step 2
Upload the 3GPP Multimedia File file(s) (*.3GP) from your computer, Dropbox, Google Drive, or by dragging it on the page.
Step 3
Choose the language spoken in the uploaded 3GP file. We support over 50 different languages including Russian, Chinese, Spanish, and English. Click the 'Start Transcribing Now' button.
Step 4
Sonix will then automatically transcribe the audio from your 3GP file and convert it to a simple text format. Grab a cupcake, it will take only a few minutes.
Step 5
Use the Sonix AudioText Editor to polish your transcript before we convert it to a caption file. Simply type in your browser to correct any words in your transcript.
Step 6
Click the 'Export' button. Choose either 'Subrip subtitle file (.srt)' or 'WebVTT file (.vtt)' from the dropdown to download the closed caption version of your 3GP file. You can also adjust the character length and time duration length of each caption.
That's it! Your 3GP file has now been converted to closed captioning and is ready for the next step in your workflow!
Thousands of customers create closed captions from their 3GP files with Sonix 
Frequently Asked Questions for 3GPP Multimedia File (*.3GP) to subtitle 
What is a 3GP file?
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.
Does Sonix transcribe video files with a *.3GP file extension?
Yes, Sonix does automatically transcribe video files with a .3GP file extension. Sonix is an online video to text converter. Convert any audio (mp3, m4a, wav, ...) or video (3gp, mp4, mov, avi, ...) file to text without installing any software! Sonix quickly and accurately transcribes *.3GP files and converts them to text in a subtitle format.
Know anyone who needs to convert 3GPP Multimedia File (.3GP) to subtitle?
We'd appreciate it if you tell them about Sonix—the best way to convert 3GP to subtitle.
Other ways to convert your 3GP video files with Sonix
3GP to text
Use the most accurate speech-to-text technology to convert files: 3GP to text.
3GP to docx
Accurately transcribe your 3GP file to Microsoft Word Format (docx) so you can bring the transcript into your workflow.
3GP to PDF
Easily transcribe your 3GP file to Adobe's Portable Document Format (pdf) so you can share them with colleagues.
3GP to subtitles
Create subtitles for your 3GP files to make them more accessible for your audience.
3GP to srt
Quickly create subtitles from your 3GP files and save them as SRTs, one of the most widely supported subtitle formats.
3GP to VTT
Create more advanced captions for your 3GP files by using the latest caption format VTT (Video Text Tracks).
Add subtitles to 3GP files
Quickly and easily add subtitles to your MP4 video files with the power of automated transcription.
Create closed captions from your 3GPP Multimedia File files with Sonix 
Sonix automatically transcribes and translates your audio/video files in 50+ languages. Easily search, edit, and share your media files. Sonix is an online, fully-automated speech to text service that quickly converts 3GPP Multimedia File files to captions. Fast, accurate, and affordable. Millions of users from all over the world.
Includes 30 minutes of free transcription
