3GPP to FLAC Converter
Convert 3GPP to FLAC online for free. Fast, secure, and high-quality conversion with no sign-up or software required.
Maximum file size is 1GB
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Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
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Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.
Choose an output format
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What is a 3GPP file?
The 3GPP file extension is functionally identical to 3GP, serving as a simplified version of the MPEG-4 Part 14 (MP4) container format. Designed by the 3rd Generation Partnership Project for GSM networks, it handles data storage for audio, video, and text (subtitles). The format adheres to ETSI 3GPP technical specifications TS 26.244, supporting variable bit rate (VBR) audio via the Adaptive Multi-Rate (AMR) codec. While less common than the three-character .3gp extension, .3gpp is fully compliant with the ISO/IEC 14496-12 standard.
How to open a 3GPP file
Opening a 3GPP file requires software capable of parsing the ISO base media file structure and decoding H.263/H.264 video alongside AMR audio. Native support exists in standard Android video players. For Windows and macOS users, if the default media players (Movies & TV, QuickTime) encounter playback errors, the VLC media player is the industry-standard solution for rendering these mobile-specific archives.
3GPP Technical Info
- Full Name
- 3rd Generation Partnership Project File Format
- Developed By
- 3GPP
- Initial Release
- 2004
- MIME Type
- video/3gpp
What is a FLAC file?
The Free Lossless Audio Codec (FLAC) is an open-source audio coding format developed by the Xiph.Org Foundation that compresses digital audio without any loss of data (bit-perfect preservation). It employs linear prediction and Rice coding (Golomb-Rice) rather than the perceptual psychoacoustic modeling used in MP3 or AAC. The format structure consists of the 'fLaC' stream marker, metadata blocks (Streaminfo, Vorbis comments for tags, Seekpoints), and audio frames, typically achieving compression ratios of 50-70% compared to raw PCM WAV files.
How to open a FLAC file
FLAC enjoys extensive native support on modern platforms, including Windows 10/11, Android, and macOS (starting with macOS High Sierra). For older systems or advanced playback control, software such as Foobar2000 (Windows) or Vox (macOS) is recommended. The VLC media player is a universal solution for all operating systems, handling FLAC streams and associated metadata seamlessly.
FLAC Technical Info
- Full Name
- Free Lossless Audio Codec
- Developed By
- Josh Coalson / Xiph.Org Foundation
- Initial Release
- 2001
- MIME Type
- audio/flac
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Every 3GPP to FLAC conversion runs on our servers, so your device stays fast and the output quality stays intact.
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Developer API
Convert 3GPP to FLAC via API
Automate 3GPP to FLAC conversions in three steps: create a job, upload your file, then poll for the result.
# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"tag": "3gpp-to-flac",
"tasks": {
"upload-file": {
"operation": "import/upload"
},
"convert": {
"operation": "convert",
"input": "upload-file",
"output_format": "flac"
},
"export-result": {
"operation": "export/url",
"input": "convert"
}
}
}'
# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.3gpp
# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
-H "Authorization: Bearer YOUR_API_KEY"Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.