MPEG to OGA Converter

Extract MPEG Audio to OGA: What This Tutorial Covers

This tool throws away the video in an .mpeg or .mpg file and keeps the soundtrack, wrapped as OGA — audio in an Ogg container. Xiph, who created Ogg, reserve .ogg for Vorbis I and use .oga for Ogg audio generally, which is why this page exists alongside MPEG to OGG. Four codecs can go inside, they behave very differently, and two of the rate controls do something other than what their labels suggest — that is what this walk-through covers.

How to Convert MPEG to OGA

1. Upload Your MPEG File: Drag and drop the video onto the page or click "+ Add Files". Both .mpeg and .mpg are accepted and several files can be queued together.
2. Pick the Audio Codec: Vorbis is preselected. FLAC, Opus and Speex are the alternatives, and each one changes which of the controls below actually do anything.
3. Choose a rate control, and set Audio Channel, Audio Sample Rate or Trim (optional): the panel opens on Quality Preset but no rung is pre-chosen, so either pick one or switch to Custom Bitrate, Constant Bitrate, Variable Bitrate or "Specific file size". Audio Channel and Audio Sample Rate both start on Original.
4. Convert and Download: Click Convert and save the .oga. Files upload over an encrypted connection, are processed on our servers and are deleted automatically after a few hours — no sign-up, no watermark.

Which Codec to Put Inside the Ogg

Vorbis is the right default for music and general audio. Opus is more efficient at low rates and is the better pick for speech you want small. FLAC is for archiving — but note that the compression-level control only appears on a true .flac target, so on .oga you get FLAC's default effort. Speex is a narrowband speech codec from a previous era; unless a legacy system demands it, Opus does the same job better, and Xiph's own guidance would put Speex in a .spx file and Opus in a .opus file anyway.

The Two Rate Controls That Surprise People

"384K" under Variable Bitrate is not a Vorbis quality rung. The Variable Bitrate list runs 48K, 64K, 80K, 96K, 112K, 128K, 160K, 192K, 224K, 256K, 320K and 384K. Every entry up to 320K maps to a Vorbis quality level, so the encoder works in variable-bitrate quality mode. There is no Vorbis quality level for 384K, so picking it silently changes the mode: you get a fixed 384 kbps average-bitrate encode instead. That matters more than it sounds — in our testing, libvorbis refuses a 384 kbps target on a mono stream outright and the conversion produces nothing, while the same setting works on stereo. If your MPEG has a mono soundtrack, stay at 320K or below.

Bitrate controls do nothing to FLAC. Choose FLAC and the Quality Preset, Custom Bitrate and Constant Bitrate controls are still on screen, but a lossless encoder ignores a rate request: we measured the same clip encoded with and without a bitrate setting and got identical file sizes. If you want a smaller FLAC, the levers are the sample rate and the channel count, not the bitrate.

Walk-through: Picking a Bitrate for a Vorbis Extract

The audio inside an MPEG program stream is almost always MPEG Audio Layer II, which is already lossy. Re-encoding it to Vorbis stacks a second lossy generation on top, so the aim is simply to give Vorbis enough room that it does not throw away anything the first encode kept.

• Match or beat the source. MP2 soundtracks on DVDs and capture cards commonly run 192-384 kbps. Choosing a Variable Bitrate rung at or above the source rate keeps the second encode transparent.
• Web or app audio. The 128K to 160K rungs are efficient and hard to fault on typical music.
• Speech. Set Audio Channel to Mono and drop to 64K-96K, or switch the codec to Opus, which holds up better at those rates.
• Exact size. "Specific file size" takes a target in KB or MB and works out a rate for you.
• Just a section. Trim takes a start time and a duration in seconds (12.5) or HH:MM:SS.sss (00:01:30.500), so you can pull one song out of a long recording without cutting it afterwards.

Common Errors and How to Fix Them

• "Nothing came out / the file is empty" — either the source has no audio stream at all (some screen and security-camera captures are video-only), or you picked the 384K Variable Bitrate entry on mono audio. Check the clip in a player first, then drop to 320K.
• "It sounds worse than the video did" — the chosen rate is below the MP2 source rate. Move up a rung or two; there is no way to recover what the second encode discards.
• "My iPhone or iTunes will not play it" — Apple only shipped full native Ogg Vorbis support in Safari 18.4 and iOS 18.4. On older Apple devices convert to MPEG to MP3 instead.
• "The Speex output sounds dull" — Speex is limited to 8 kHz or 16 kHz here, so everything above roughly 4 or 8 kHz is gone by design. Use Opus for anything but a legacy requirement.
• "A game engine wants .ogg, not .oga" — same container, different extension. MPEG to OGG writes the name those tools look for.

Frequently Asked Questions

Will I lose quality extracting MPEG audio to OGA?

Some, unavoidably. The soundtrack in an MPEG program stream is normally MPEG Audio Layer II, which is lossy, so a Vorbis or Opus encode is a second lossy generation — there is nothing to regain, only a little more to lose. Picking a rung at or above the source rate keeps the loss inaudible in practice; dropping far below it does not.

Is OGA the same as OGG?

Same container, different extension and a different convention. Xiph's own guidance reserves .ogg for Vorbis I audio and uses .oga for Ogg audio in general, with .spx for Speex and .opus for Opus. Players identify streams by content rather than by filename, so both work nearly everywhere — but some game engines and older tools match on the extension, in which case MPEG to OGG is the one to use.

Which browsers and devices play OGA?

caniuse puts Ogg Vorbis playback at 95.39% of browsers globally. Chrome, Firefox and Edge have supported it for years; Safari was partial from 14.1 and full from 18.4, with Safari on iOS the same from 18.4. VLC, Audacity and most desktop players handle every codec on this page.

Why does the 384K option behave differently from the others?

Because it is not a Vorbis quality level. Every Variable Bitrate entry from 48K to 320K maps onto Vorbis's quality scale and encodes in true variable-bitrate mode; 384K has no such mapping, so it falls back to a fixed 384 kbps average-bitrate encode. In our testing that fixed target is rejected by libvorbis on mono audio, which means a failed conversion rather than a big file — one more reason to stop at 320K.

Can I get a lossless copy of the MPEG's audio?

You can get a lossless re-encode of the decoded audio by choosing FLAC, which will not lose anything further, but the MP2 source was already lossy so the result is not a true original. Note that on .oga the FLAC compression-level control is not shown — that only appears on a real .flac target, and MPEG to FLAC is the page for it.

What happens if my MPEG has no audio track?

There is nothing to extract and the conversion has no output to produce. Screen recordings, silent camera captures and some security-camera exports are video-only; open the file in a player first if you are unsure, and if it is silent no converter can pull sound out of it.

Should I use OGA or MP3 from an MPEG?

Choose OGA for royalty-free delivery: web audio, Linux desktops, Wikimedia uploads and game engines that import Ogg Vorbis natively. Choose MP3 when maximum device compatibility matters, particularly for older hardware and Apple products from before Safari 18.4 — MPEG to MP3 covers that case.

How do I trim the audio without a separate step?

Use the Trim control on this page: set a start time and a duration and only that section is encoded. The dedicated audio trimmer does not accept video files, so if you would rather cut before converting, Video Cutter works on the .mpeg itself.