MPG files store MPEG-1/MPEG-2 video with MP2 audio — the standard audio codec for DVDs and digital TV broadcasts. OGG is the free, open-source audio container carrying Vorbis or Opus compressed audio. Converting MPG to OGG extracts the audio from legacy disc and broadcast sources and re-encodes it using Vorbis — a modern, patent-free codec that provides quality comparable to AAC and MP3 at similar bitrates.

OGG Vorbis is the standard audio format in open-source ecosystems. Linux media players, Firefox, Chromium, game engines (Unity, Godot, Unreal), and many web applications use OGG natively. If you need audio from MPG files for these platforms, OGG provides excellent quality in a completely royalty-free format that avoids the patent concerns of AAC.

FFmpeg decodes the MP2 audio from the MPG container and re-encodes using the libvorbis encoder. Vorbis uses quality-based VBR encoding with quality levels from -1 to 10. Quality 5 (~160 kbps) is the recommended default for most content. The output is wrapped in an OGG container with Vorbis comment metadata. Since both MP2 and Vorbis are lossy, this is a transcoding operation that introduces a second generation of lossy compression.

Resolution: 1920x1080

Bitrate: 8-12 Mbps

H.264 recommended for fast processing

Resolution: 1080x1080

Bitrate: 3.5 Mbps

Square or 9:16 for Reels

Resolution: 1080x1920

Bitrate: 4 Mbps

9:16 vertical, under 60s ideal

Resolution: 1280x720

Bitrate: 5 Mbps

Under 140s, 512MB max

Resolution: 960x540

Bitrate: 2 Mbps

16MB limit for standard, 64MB for document

Resolution: 1280x720

Bitrate: 4 Mbps

8MB free, 50MB Nitro

Yes, converting between two lossy formats introduces some generation loss. Use a Vorbis quality level that matches or exceeds the original MP2 bitrate to minimize it.

Roughly: quality 3 ≈ 112 kbps, quality 5 ≈ 160 kbps, quality 7 ≈ 224 kbps, quality 10 ≈ 500 kbps. Actual bitrate varies with content.

Safari does not support OGG Vorbis in the <audio> element. Provide MP3 or AAC fallback for Safari users.

Yes. Opus is technically superior to Vorbis at all bitrates. Most modern OGG-compatible software supports Opus. For legacy compatibility, stick with Vorbis.

OGG is the container format; Vorbis is the audio codec inside it. OGG can also contain Opus, FLAC, and Theora (video). 'OGG' typically refers to OGG Vorbis audio files.

Device	MPG	OGG
Windows PC	Partial	Partial
macOS	Partial	Partial
iPhone/iPad	Partial	Partial
Android	Partial	Native
Linux	Partial	Native
Web Browser	No	Native

Feature	MPG	OGG
Full Name	MPEG Video	Ogg Vorbis
Extension	.mpg	.ogg
Best For	Universal support	Open source

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