SwingFiles
webm → 3gpCONVERT • Local processing

Convert .WEBM → .3GP

Transcode the video and audio streams into the target media format. Processing happens on your device, with no file upload.

Convert .WEBM → .3GP

Drop Files for Local Browser Processing

Auto-detects magic bytes • Zero daily caps • Instant ZIP & P2P Swing chaining

Target Format & Engine Parameters

CONVERT: Transcode the video and audio streams into the target media format.

Compute Engine:

Technical Specifications: WEBM (.webm) vs 3GP (.3gp)

Specification ParameterSource: .WEBM (WEBM)Target: .3GP (3GP)
Full Format NameWebM VP9/AV1 Video3GPP Mobile Multimedia
IANA MIME Typevideo/webmvideo/3gpp
Magic Byte Signature (Hex)1A 45 DF A366 74 79 70 33 67
Compression & FidelityLossy / PerceptualLossy / Perceptual
Alpha / Transparency & DepthYUV 4:2:0 / 10-bit HDR StreamYUV 4:2:0 / 10-bit HDR Stream
Typical Size Reduction Ratio28:130:1
OS & Platform SupportCross-Platform via SwingFiles WebAssembly EngineCross-Platform via SwingFiles WebAssembly Engine

Processing Steps

  1. 1. Drop .WEBM Files Locally
    Choose WEBM (video/webm) files from your device. The browser checks their type before processing.
  2. 2. Convert Locally
    Transcode the video and audio streams into the target media format.
  3. 3. Save .3GP or Swing P2P
    Download the .3gp output, export a batch ZIP, or choose "Convert & Swing" to transfer it to another device.

Frequently Asked Questions

What does this WEBM to 3GP route produce?

Transcode the video and audio streams into the target media format. The target format may have different quality or capabilities than the source.

Does the .webm file leave my device?

The conversion runs in your browser. Files are not uploaded to a conversion server.

Can I process large .webm files or batches?

There is no daily conversion quota. Large files and batch size depend on available browser memory and the format engine.

Reverse Pair (3GP-TO-WEBM) & Related Format Conversions

Reverse: 3gp to webm
3GP to WEBMWEBM to MP4WEBM to MOVWEBM to MKVWEBM to AVI

Same-Wi-Fi P2P Radar Discovery

Devices on the same Wi-Fi appear automatically below — zero codes needed

Scanning local Wi-Fi subnet… Open this page on another device to pair automatically
AES-256-GCM file key stays in the peer channel; compare fingerprints before transferringPeer-to-peer · live speed appears during transfer

Phone ↔ PC Room Pairing

VERIFY PEER
6-Digit Swing Room Code
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Drop Unlimited Files to Swing (20GB+ Direct-to-Disk Stream)

Zero cloud upload caps • 64KB chunked SCTP DataChannel • 4MB backpressure • Mobile Screen WakeLock protection

Ready for zero-cloud WebRTC SCTP streaming (64KB chunks, 4MB backpressure control).
WakeLock: STANDBY