OGG vs RMVB
A detailed comparison of OGG Vorbis Audio and RealMedia VBR — file size, quality, compatibility, and which format to choose for your workflow.
OGG Vorbis Audio
Audio FilesOGG Vorbis is an open-source, royalty-free lossy audio format. It generally offers better quality than MP3 at equivalent bitrates and is commonly used in gaming, open-source software, and web audio.
About OGG filesRealMedia VBR
Video FilesRMVB (RealMedia Variable Bitrate) is a variable bitrate extension of the RealMedia container. It was popular for distributing video content in Asian markets due to its efficient compression at low bitrates.
About RMVB filesStrengths Comparison
OGG Strengths
- Completely royalty-free — no patent worries for encoders or decoders.
- Container is streaming-friendly — useful for internet radio.
- Native support in HTML5 <audio>, every major Linux distro, and most audio tools.
- Can multiplex any number of tracks (audio, video, text) in one file.
- Mature tooling via libvorbis, libopus, and FFmpeg.
RMVB Strengths
- Better quality-at-bitrate than fixed RealMedia.
- Still playable in modern open-source players (VLC, mpv).
- Cultural archive value for 2000s Asian internet video.
Limitations
OGG Limitations
- Apple and Microsoft avoided Ogg historically — iOS and Safari only added Opus support recently.
- Hardware decoder support is rare — encoding for battery-constrained devices (phones) still favors AAC.
- Confusing naming: ".ogg" could be Vorbis, Opus, Speex, or FLAC.
- Metadata conventions (Vorbis comments) are simpler than MP4's tagging.
RMVB Limitations
- Tied to the dead RealNetworks ecosystem.
- H.264 is objectively better at equal bitrates.
- No modern encoder — content is archival only.
- Obscure format outside Asian regional archives.
Technical Specifications
| Specification | OGG | RMVB |
|---|---|---|
| MIME types | audio/ogg, application/ogg | — |
| Extensions | .ogg (audio), .oga, .ogv (video), .ogx (app), .opus | — |
| Standard | RFC 3533 (container), RFC 5334 (MIME) | — |
| Codecs | Vorbis, Opus, Speex, FLAC, Theora (video), Dirac | RealVideo 9/10 (variable bitrate) |
| Streaming | Native (page-based structure) | — |
| MIME type | — | application/vnd.rn-realmedia-vbr |
| Extension | — | .rmvb |
| Audio | — | RealAudio Cook |
| Successor ecosystem | — | H.264 MP4 / MKV |
Typical File Sizes
OGG
- 3-min music (Vorbis q5 / ~160 kbps) 3.5 MB
- 1-hour podcast (Vorbis q3) 45 MB
- Game sound effects (Vorbis q2) 5-30 KB each
RMVB
- 45-min TV episode 150-350 MB
- 2-hour movie 300-800 MB
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Frequently Asked Questions
OGG is an open-source multimedia container format developed by the Xiph.Org Foundation. It most commonly holds Vorbis audio (for music) or Opus audio (for voice), offering good quality at lower bitrates than MP3.
OGG is an open-source multimedia container formato developed pelo Xiph.Org Foundation. It most commonly holds Vorbis audio (for music) ou Opus audio (for voice), offering boa qualidade at baixaer bitrates than MP3.
OGG files play in VLC, Firefox, Chrome, foobar2000, and Audacity. Android supports OGG natively. On iOS and iTunes, you may need to convert to a supported format like MP3 or AAC.
OGG arquivos reproduzir in VLC, Firefox, Chrome, foobar2000, e Audacity. Android suporta OGG natively. no iOS e iTunes, you may precisar converter para um suportado formato like MP3 ou AAC.
OGG Vorbis delivers better audio quality at the same bitrate compared to MP3. However, MP3 has universal device support. Use OGG in open-source projects and games. Convert to MP3 when maximum compatibility is needed.
OGG Vorbis delivers better qualidade do áudio at the same bitrate comparado a MP3. Porém, MP3 has universal device support. usar OGG in open-source projects e games. converter to MP3 when máximo compatibilidade is needed.