MPG to M4A Converter

Extract M4A Audio from MPG

An MPG file is an MPEG-1 or MPEG-2 program stream — the Video CD, DVD, and broadcast-era video container whose soundtrack is almost always MPEG-1 Audio Layer II (MP2) or Dolby AC-3. This tool demultiplexes that stream, discards the video, and re-encodes the audio on its own as an M4A file (AAC), the format iPhone, iPad, and iTunes treat as native. It's the quick way to lift the music or dialogue off an old VCD/DVD rip and carry it onto a phone without dragging the video along.

How to Convert MPG to M4A

1. Upload Your MPG File: Drag and drop your .mpg or .mpeg file onto the page, or click "+ Add Files". Queue several clips to extract them all in one batch with the same settings.
2. Set the Quality Preset: Open "Show All Options" and choose a Quality Preset, or switch to Constant Bitrate / Variable Bitrate for a fixed target. Because MPG audio is already lossy, set the bitrate to match or exceed the source — 192-256 kbps keeps the AAC re-encode transparent for music; 96-128 kbps is plenty for speech.
3. Adjust Audio Channel, Sample Rate, or Trim (Optional): Leave Audio Channel and Audio Sample Rate on "Original" to copy the source layout, downmix surround to stereo, or cut to a single channel for voice. Use Trim to keep only a start-to-duration slice.
4. Convert and Download: Click "Convert" and download your M4A file. No sign-up, no watermark.

Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — never shared or made public.

What You Get: MPG Audio vs the M4A Output

Frequently Asked Questions

Does converting MPG to M4A keep the video?

No. M4A is an audio-only container, so the MPEG video stream in your MPG file is dropped and only the soundtrack is written out. That's why the result is a fraction of a standard-definition MPG's size — the picture data, which is the bulk of the file, simply isn't in the output. If you want to keep the moving picture, convert to a video format with MPG to MP4 instead.

Will I lose quality extracting AAC audio from an MPG?

Some, but it's usually inaudible if you don't starve the bitrate. MPG audio is MPEG-1 Layer II (MP2) or Dolby AC-3 — both already lossy — and M4A uses AAC, so this is a lossy-to-lossy re-encode that can't recover detail the original throw away and adds one more generation of loss on top. The fix is to encode at or above the source rate: MP2 on a DVD often runs around 192-224 kbps, so a 192-256 kbps AAC preset keeps the conversion transparent. In our testing, a 60-second 48 kHz stereo MPG at a 256 kbps AAC preset was indistinguishable from the source in normal listening.

What bitrate should I choose for the M4A?

Match it to the content and to the source. Spoken-word recordings — interviews, lectures, dialogue from a home video — sound clean at 96-128 kbps. Music and anything with wide dynamics benefit from 192-256 kbps. There's little point exceeding 256 kbps for AAC: the gains become inaudible and the file just grows. Dropping well below the source bitrate is the one thing that makes the loss obvious, so avoid it for anything you care about.

Should I pick M4A or MP3 for the extracted audio?

M4A (AAC) gives slightly better quality than MP3 at the same bitrate and is the native audio format on iPhone, iPad, and iTunes, so it's the better pick for the Apple ecosystem. MP3 is the safer choice if you need playback on very old hardware or want the most universally accepted file. For that, use MPG to MP3 — the steps are identical. If your goal is lossless archiving rather than a small phone-friendly file, MPG to FLAC wraps the existing audio without another lossy pass.

How are my files handled, and is there a size limit?

Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public. The main practical limit is upload size and time: an MPG carries full standard-definition video, so a long clip can take a while to upload even though the M4A you get back is small.