Convert 3G2 to MXF — Free Online Tool
Convert 3G2 mobile video files to MXF for professional broadcast and post-production workflows. This tool re-encodes the video stream using H.264 (libx264) and upgrades the audio from AAC to uncompressed PCM (pcm_s16le), producing a broadcast-ready MXF container suitable for editing suites and playout systems.
to
FFmpeg Command
Copy this command to run the same conversion locally with FFmpeg on your desktop. Download FFmpeg
Drop your 3G2 file here
or click to browse
Free — no uploads, no signups. Your files never leave your browser.
Settings
Note: Browser-based encoding uses approximate quality targets. For precise CRF compression, copy the FFmpeg command above and run it on your desktop.
Estimated output:
Conversion Complete!
DownloadHow It Works
3G2 is a lightweight container built for CDMA mobile networks, typically carrying H.264 video and AAC audio at low bitrates optimized for small screens and constrained bandwidth. MXF is a professional broadcast container that demands higher-quality audio and richer metadata support. During this conversion, the H.264 video stream is re-encoded with a CRF value of 23 — maintaining visually acceptable quality while conforming to the MXF wrapper's expectations. The AAC audio, which is a lossy compressed format designed for mobile delivery, is fully decoded and re-encoded as 16-bit PCM (pcm_s16le) at 192k — an uncompressed linear audio format that broadcast and NLE systems require for frame-accurate editing and mixing. The resulting MXF file will be significantly larger than the source 3G2 because PCM audio carries no compression, and the file gains timecode support and professional metadata scaffolding inherent to the MXF format.
What Each Flag Does
| Flag | What it does |
|---|---|
ffmpeg
|
Invokes the FFmpeg binary — the open-source multimedia processing engine that handles all demuxing, decoding, encoding, and muxing for this 3G2-to-MXF conversion. |
-i input.3g2
|
Specifies the input file — a 3G2 container carrying H.264 video and AAC audio as originally encoded by a CDMA mobile device. FFmpeg demuxes this into its component video and audio streams for processing. |
-c:v libx264
|
Re-encodes the video stream using the libx264 H.264 encoder, which is the default video codec for both the source 3G2 and the target MXF in this workflow, ensuring broad compatibility with broadcast NLEs and playout systems that accept MXF-wrapped H.264. |
-c:a pcm_s16le
|
Decodes the AAC audio from the 3G2 and re-encodes it as 16-bit signed little-endian PCM — the uncompressed audio format standard in broadcast MXF files, required by professional editing and playout systems that cannot accept compressed AAC audio. |
-crf 23
|
Sets the Constant Rate Factor for the libx264 video encode to 23 (the default), which balances output file size against visual quality. Given that 3G2 source footage is already low-bitrate mobile content, CRF 23 avoids introducing additional quality loss during the re-encode. |
-b:a 192k
|
Nominally sets a 192 kbps audio bitrate target — this flag is largely inert for pcm_s16le since PCM is uncompressed and its actual bitrate is fixed by sample rate and bit depth (approximately 1536 kbps for stereo 48kHz 16-bit), but it is included to explicitly document the audio quality intent. |
output.mxf
|
Defines the output filename and triggers FFmpeg to mux the re-encoded H.264 video and PCM audio into an MXF OP1a container, the standard operational pattern used for file-based broadcast delivery and professional post-production ingest. |
Common Use Cases
- Ingesting field footage captured on older CDMA-era mobile devices into a broadcast NLE such as Avid Media Composer or Adobe Premiere for professional editing
- Preparing archival 3G2 video clips from legacy CDMA handsets for submission to a broadcast archive system that requires MXF-wrapped media
- Upgrading the audio fidelity of a 3G2 clip from lossy AAC to uncompressed PCM before mixing it into a broadcast audio pipeline
- Converting mobile-originated 3G2 content for playout on a broadcast server that only accepts MXF-wrapped H.264 with PCM audio tracks
- Delivering user-generated 3G2 content received from CDMA network submissions into a post-production facility's MXF-based ingest workflow
- Transcoding 3G2 news footage shot on field devices into MXF so it can be imported directly into a broadcast graphics or subtitling system
Frequently Asked Questions
No — the video quality is bounded by the original 3G2 source, which was encoded at low bitrates for CDMA mobile delivery. Re-encoding with libx264 at CRF 23 preserves the existing visual quality faithfully but cannot recover detail that was discarded when the 3G2 was originally compressed. If your source 3G2 looks pixelated or blocky, the MXF output will look the same.
MXF for broadcast and professional post-production workflows standardizes on uncompressed PCM audio (pcm_s16le or pcm_s24le) because it is frame-accurate, has zero decoding latency, and is universally supported by NLEs, audio mixers, and playout servers. AAC, while technically supported by some MXF profiles, is a lossy compressed format designed for consumer delivery and is rarely accepted in professional ingest pipelines. The conversion to PCM will noticeably increase file size.
Significantly larger — often 5 to 20 times the size, depending on duration. 3G2 files use highly compressed AAC audio and low-bitrate H.264 tuned for mobile networks, while MXF carries uncompressed PCM audio which alone can account for roughly 10 MB per minute per channel at 16-bit/48kHz. A one-minute stereo 3G2 clip that is 2 MB could easily become 20–30 MB as an MXF with PCM audio.
MXF natively supports rich metadata and timecode, but 3G2 files carry very minimal metadata — typically just creation date and basic track information from the mobile device. The conversion will carry over whatever metadata exists in the 3G2 container, but do not expect broadcast-standard timecode or extensive production metadata to be present in the output unless you add it manually in a post-production tool after conversion.
To change video quality, adjust the -crf value: lower numbers (e.g., -crf 18) produce higher quality and larger files, while higher numbers (e.g., -crf 28) reduce quality and file size. To use 24-bit PCM audio instead of 16-bit, replace -c:a pcm_s16le with -c:a pcm_s24le — preferred if your broadcast facility requires 24-bit audio. For example: ffmpeg -i input.3g2 -c:v libx264 -c:a pcm_s24le -crf 18 output.mxf
Yes. On Linux or macOS, you can use a shell loop: for f in *.3g2; do ffmpeg -i "$f" -c:v libx264 -c:a pcm_s16le -crf 23 -b:a 192k "${f%.3g2}.mxf"; done. On Windows Command Prompt, use: for %f in (*.3g2) do ffmpeg -i "%f" -c:v libx264 -c:a pcm_s16le -crf 23 -b:a 192k "%~nf.mxf". This is especially useful for batch-ingesting a large collection of legacy CDMA mobile clips into a broadcast archive.
Technical Notes
3G2 containers use the MP4/ISOBMFF family of structures, so they can technically hold H.264 video identical to what MXF accepts, but the audio codec mismatch is the critical concern in this conversion. The AAC audio in the 3G2 must be fully decoded to PCM before being written into MXF — this is a lossy-to-lossless step in terms of the output format, but the decoded audio can only be as accurate as what AAC retained, meaning any compression artifacts from the original mobile encode will be preserved in the PCM. The -b:a 192k flag has limited effect on PCM audio since PCM is uncompressed and its bitrate is determined by sample rate and bit depth, not a target bitrate — the flag is included for command consistency but pcm_s16le at 48kHz stereo will always be approximately 1536 kbps regardless. The MXF OP1a operational pattern produced by FFmpeg is broadly compatible with Avid, Adobe Premiere, and many broadcast servers, but some proprietary MXF flavors (e.g., Sony XDCAM, Avid DNxHD-wrapped MXF) require specific codec and wrapper parameters beyond what this default command sets. Subtitles, chapters, and multiple audio tracks from the 3G2 source are not carried into the MXF output, though 3G2 files from mobile devices rarely contain any of these anyway.