Convert 3GP to MPG — Free Online Tool
Convert 3GP mobile video files to MPG format using MPEG-2 video and MP2 audio codecs — the standard encoding used for DVD and broadcast video. This tool re-encodes your 3GP content entirely in-browser, transforming low-bandwidth mobile footage into a format compatible with legacy DVD authoring software, broadcast systems, and VCD players.
to
FFmpeg Command
Copy this command to run the same conversion locally with FFmpeg on your desktop. Download FFmpeg
Drop your 3GP file here
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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
3GP files typically contain H.264 (libx264) video and AAC audio, optimized for 3G mobile networks with low bitrates and small frame sizes. Converting to MPG requires a full re-encode of both streams: the video is transcoded from H.264 to MPEG-2, and the audio is transcoded from AAC to MP2 (MPEG-1 Audio Layer II). Neither stream can be copied directly because MPG only supports MPEG-1/2 video and MP2/MP3/AC3 audio — completely different codec families from what 3GP uses. The resulting MPG file will be significantly larger than the source 3GP, as MPEG-2 at high quality uses considerably more bitrate than H.264 at equivalent visual fidelity. Frame dimensions from the original 3GP are preserved during encoding.
What Each Flag Does
| Flag | What it does |
|---|---|
ffmpeg
|
Invokes the FFmpeg tool. In the browser-based version of this tool, FFmpeg runs via WebAssembly (ffmpeg.wasm) entirely within your browser — no data is sent to a server. When running locally on your desktop, this calls your installed FFmpeg binary. |
-i input.3gp
|
Specifies the input file — a 3GP container, typically holding H.264 video and AAC audio as used in 3G mobile video. FFmpeg reads the container structure and demuxes the streams for re-encoding. |
-c:v mpeg2video
|
Sets the video encoder to MPEG-2, transcoding the H.264 video stream from the 3GP source into the MPEG-2 format required by the MPG container. This is a full re-encode since H.264 and MPEG-2 are completely different codec families. |
-c:a mp2
|
Sets the audio encoder to MP2 (MPEG-1 Audio Layer II), transcoding the AAC audio from the 3GP source into MP2 — the standard audio codec for MPEG-2 program streams and DVD/broadcast workflows. |
-q:v 2
|
Sets the MPEG-2 video quality using the quantizer scale, where 1 is highest quality and 31 is lowest. A value of 2 targets near-maximum MPEG-2 quality, which helps preserve as much detail as possible from the low-resolution 3GP source while producing a larger output file. |
-b:a 192k
|
Sets the MP2 audio bitrate to 192 kilobits per second, which is the standard bitrate for MP2 audio in broadcast and DVD contexts. This is considerably higher than the typical AAC audio bitrate found in 3GP files, ensuring the audio output is not additionally constrained. |
output.mpg
|
Specifies the output filename with the .mpg extension, signaling FFmpeg to write an MPEG-2 Program Stream container. The .mpg extension ensures compatibility with DVD authoring tools, legacy video editors, and hardware players that expect standard MPEG-2 output. |
Common Use Cases
- Importing old 3GP video clips recorded on early-2000s Nokia or Sony Ericsson phones into DVD authoring software like DVD Architect or Nero Vision that requires MPEG-2 input
- Archiving mobile video footage to MPG for compatibility with legacy broadcast editing systems and tape-based workflows that expect MPEG-2 program streams
- Preparing 3GP video from field recordings or surveillance footage for playback on standalone DVD players and set-top boxes that cannot decode H.264
- Converting mobile video clips for use in older non-linear editing software (such as early versions of Adobe Premiere or Vegas) that does not natively support 3GP or H.264
- Creating VCD-compatible MPEG-1/2 video files from 3GP clips for distribution on physical media to users without modern playback hardware
- Submitting mobile-captured footage to broadcast or cable TV post-production pipelines that require MPEG-2 deliverables
Frequently Asked Questions
No — converting from 3GP to MPG will not recover quality that was lost when the original 3GP was recorded. Both formats are lossy, and 3GP video recorded on a mobile device was already compressed with H.264 at a low bitrate suited for 3G transmission. The MPEG-2 output will be a faithful re-encoding of that source material, but any compression artifacts or low-resolution characteristics from the original 3GP will remain. The MPG file will simply be in a different codec format, typically at a larger file size.
This is expected and stems from the fundamental difference in compression efficiency between the two codecs. H.264 (used in 3GP) is a much more modern codec than MPEG-2 and can achieve equivalent visual quality at roughly half the bitrate. Since MPEG-2 is less efficient, the same content encoded at high quality in MPG requires significantly more data. Additionally, the default quality setting (-q:v 2) in this conversion targets high fidelity MPEG-2 output, which further increases file size compared to the compact 3GP source.
There will be some generational quality loss since the audio is transcoded from AAC to MP2, meaning it is decoded from AAC and then re-encoded as MP2 at 192k. MP2 is an older codec than AAC and is generally considered less efficient — AAC can deliver better perceived quality at the same bitrate. However, 3GP audio is typically recorded at very low bitrates (often 64k or less), and re-encoding it to MP2 at 192k will not introduce dramatic degradation. The quality ceiling is still limited by the original 3GP source audio.
Yes — the video quality is controlled by the -q:v flag, which accepts values from 1 to 31 for MPEG-2, where 1 is the highest quality (largest file) and 31 is the lowest quality (smallest file). The default used here is 2, which produces near-maximum quality output. If you need a smaller file and can accept lower quality, try values like 5 or 8. For example: ffmpeg -i input.3gp -c:v mpeg2video -c:a mp2 -q:v 5 -b:a 192k output.mpg
MPG (MPEG-2 Program Stream) has very limited metadata support compared to modern containers. Most metadata embedded in the 3GP file — such as recording timestamps, GPS coordinates, device model, or rotation tags — will not be carried over into the MPG output. The MPG format was designed for broadcast and disc media, not metadata-rich archival, so this is a known limitation of the format itself rather than a limitation of the conversion process.
Yes — on Linux or macOS you can use a shell loop to batch process: for f in *.3gp; do ffmpeg -i "$f" -c:v mpeg2video -c:a mp2 -q:v 2 -b:a 192k "${f%.3gp}.mpg"; done. On Windows Command Prompt you can use: for %f in (*.3gp) do ffmpeg -i "%f" -c:v mpeg2video -c:a mp2 -q:v 2 -b:a 192k "%~nf.mpg". This is especially useful for large collections of archival mobile video where the in-browser tool's 1GB file limit might be a constraint.
Technical Notes
The 3GP to MPG conversion involves a complete codec-level transcode of both video and audio streams — there is no possibility of stream copying because the codec families are entirely incompatible. 3GP encapsulates H.264 video and AAC audio (designed for constrained mobile environments), while MPG wraps MPEG-2 video and MP2 audio (designed for broadcast, VCD, and DVD). One important technical consideration for 3GP sources is frame dimensions: 3GP video recorded on older phones often uses non-standard resolutions (e.g., 176x144, 320x240) that may not be divisible by the macroblock sizes MPEG-2 prefers. The MPEG-2 encoder can generally handle these, but if you encounter encoding errors with unusual resolutions, adding a scale filter to normalize dimensions may help. The MPG format does not support transparency, embedded subtitles, chapter markers, or multiple audio tracks — none of which are typically present in 3GP files anyway. The output is a standard MPEG-2 Program Stream (.mpg), which is broadly compatible with DVD authoring tools, legacy broadcast ingest systems, and hardware DVD players. Note that MPG does not support variable frame rate video; if your 3GP source has a variable frame rate (common in screen recordings or some mobile cameras), FFmpeg will normalize it during encoding.