VOB to OGA Converter

How to Convert VOB to OGA Online

1. Upload Your VOB File: Drag and drop your .vob file (or the entire VTS_01_1.VOB, VTS_01_2.VOB set from a DVD's VIDEO_TS folder) onto the drop zone, or click "+ Add Files" to pick from your computer. Batch upload is supported — queue several VOB segments and they'll concatenate cleanly when output as a single audio track.
2. Pick Audio Codec and Quality Preset: Default codec for OGA is Vorbis; switch to Opus, FLAC, MP3, or PCM via the Audio Codec dropdown if you want a different encoder inside the Ogg container. Quality Preset offers Lowest through Highest — Highest maps to ~256-320 kbps for Vorbis. For finer control, switch to Constant Bitrate or Variable Bitrate and pick an exact rate (8 kbps up to 510 kbps), or set Custom Bitrate.
3. Channels, Sample Rate, and Trim (Optional): Audio Channel defaults to Original (usually stereo from DVD, occasionally 5.1 surround which will downmix to stereo for Vorbis/Opus). Audio Sample Rate defaults to Original (DVD audio is normally 48000 Hz); pick 44100 Hz to match CD-Audio targets. Use Trim to set a start time and duration when you only want a chapter, a song, or a single scene.
4. Convert and Download: Click "Convert". Files are processed on our servers and the .oga download is ready in a single step — no sign-up, no watermark, no installs.

Why Convert VOB to OGA?

VOB (Video Object) is the program-stream container from the DVD-Video specification — every commercial DVD movie, home-burned disc, and DVR recording lands in a VIDEO_TS folder full of .vob files that wrap MPEG-2 video plus AC-3, MP2, DTS, or LPCM audio. OGA is the Ogg Audio Profile defined by Xiph.Org in 2007 to separate audio-only Ogg files from generic .ogg containers and .ogv video. Extracting the audio from a VOB into an OGA file is how you reach for the patent-free, royalty-free side of the audio world without the legacy MP3 licensing baggage or Apple-flavoured M4A/AAC.

• Pull music or commentary off a DVD — concert DVDs, recital recordings, and director commentary tracks become standalone OGA files you can drop into any Vorbis/Opus-friendly player (VLC, Foobar2000, mpv, Audacious).
• Archive in a fully open container — Vorbis and Opus are unencumbered by patents, making OGA a safer long-term archive format than MP3 or AAC for libraries, museums, and educational institutions.
• Feed Android, KDE, and GNOME apps — Android and most Linux desktops play OGA natively, while OGA inside an Ogg container with Opus gives near-transparent quality at 64-96 kbps per Xiph's Opus listening tests.
• Game-engine audio — Unity, Godot, and Source-based engines all decode Ogg/Vorbis natively, so OGA is the default packing format for sound effects, voice barks, and looped music tracks.
• Podcast or audiobook ripping — instructional DVDs, language courses, and old-school audiobook DVDs convert to OGA with the trim tool so each chapter becomes its own file.
• Strip video weight from a DVR recording — a 2-hour MPEG-2 VOB can be ~4-7 GB; the same audio at 128 kbps Vorbis is roughly 110 MB, freeing storage on phones and SD cards.

VOB vs OGA — Format Comparison

Codec and Bitrate Quick Guide

Frequently Asked Questions

What's the difference between OGA and OGG, and which should I pick?

.ogg and .oga use the same Ogg container and the same audio codecs (Vorbis, Opus, FLAC, Speex). Per Xiph.Org's 2007 guidance, .ogg is reserved for Vorbis audio for backwards compatibility, while .oga is the more correct extension for any audio-only Ogg file — particularly those holding FLAC, OggPCM, or mixed audio codecs. If you need maximum compatibility with old players, use .ogg; if you want the technically correct audio-profile extension, use .oga. The bytes inside are identical for Vorbis content. Need the other extension? See VOB to OGG.

Why is my VOB file actually several files (VTS_01_1.VOB, VTS_01_2.VOB...)?

The DVD-Video specification caps each VOB file at 1 GB. Movies longer than ~9-12 minutes (depending on bitrate) are split across sequentially numbered VOB files within a title set (VTS_01_*). For a clean OGA, upload all the VOB files belonging to the same title in order — the converter concatenates them into one continuous audio stream rather than producing several disjointed clips.

Does this handle copy-protected DVDs?

No. Commercial Hollywood DVDs ship with CSS (Content Scramble System) encryption, and bypassing it is legally restricted in many jurisdictions (including the United States under the DMCA's anti-circumvention provisions). Our converter accepts the .vob files themselves — if you've already decrypted a disc you own with software like MakeMKV or HandBrake, the resulting VOB or remuxed file uploads normally. Home-burned DVDs, DVR recordings, and DVD-Audio rips you own outright work without any extra step.

Should I pick Vorbis or Opus inside the OGA?

For new conversions in 2026, Opus is technically superior — Xiph.Org's own recommendation is that at 64-96 kbps Opus beats MP3, AAC, and Vorbis on listening tests. Pick Opus when file size matters (podcasts, voice notes, mobile playback) or when you're targeting modern apps. Pick Vorbis when you need broader compatibility with older media players, game engines that only decode Vorbis (Unity 2018 and earlier, classic Source engine), or hardware players. Note: a .oga file containing Opus is still labelled .oga here for convenience; many tools also accept .opus as a more specific extension.

Will I get 5.1 surround sound from a DVD's AC-3 track?

Vorbis and Opus both support multichannel audio in theory, but most players treat a multichannel OGA inconsistently and most DVD audio downmixes cleanly to stereo. By default we downmix DVD AC-3 5.1 to stereo for OGA output — this matches what 99% of music and podcast players expect. If you specifically need to preserve surround channels, FLAC-in-Ogg is the safer multichannel route, but consider whether your target player actually decodes multichannel Vorbis/Opus before relying on it.

What sample rate should I choose — 44100 Hz or 48000 Hz?

DVD audio is almost always 48000 Hz (the DVD-Video spec mandates 48 kHz or 96 kHz LPCM, and AC-3 runs at 48 kHz). Keeping 48000 Hz avoids any resampling artefacts. Pick 44100 Hz only when you're targeting CD-Audio mastering or older Vorbis players that occasionally choke on 48 kHz — modern decoders handle 48 kHz natively. For voice-only material targeting Opus, 24000 Hz or 16000 Hz also work and shrink the file further with no audible loss.

How do I extract just one song or chapter, not the whole DVD?

Use the Trim option. Set Trim to "Start + Duration" or "Start + End", enter the timestamps (HH:MM:SS.mmm) for the chapter or song boundary, and the converter outputs only that segment as OGA. For a multi-chapter DVD, run multiple conversions with different trim ranges rather than splitting a single OGA after the fact — it preserves codec quality because you only encode once.

Can I batch-rip an entire DVD's worth of VOB files at once?

Yes. Drag every VOB in the title set onto the drop zone in order (VTS_01_1.VOB, VTS_01_2.VOB, etc.) and they'll be concatenated into one OGA output. If you have multiple titles (a TV-series disc with several episodes), upload each title set as its own batch — files within a title concatenate, but separate title sets produce separate OGA files.

Why does the OGA file sound different from the DVD's original audio?

Two reasons. First, DVD audio is usually AC-3 (Dolby Digital) at 192-448 kbps or MPEG-1 Layer II at 224 kbps — both lossy. Converting to Vorbis or Opus at a lower bitrate is a lossy-to-lossy transcode that always introduces some degradation. Pick at least 192 kbps Vorbis or 96 kbps Opus to keep the loss imperceptible. Second, surround tracks are downmixed to stereo by default, which can change the perceived mix. For the closest match to the source, use FLAC-in-Ogg (lossless from this point forward) or convert to VOB to FLAC.

What if I want MP3 instead of OGA?

Use the VOB to MP3 converter — it produces the same audio extraction in MP3 format, which has wider hardware compatibility but is patent-encumbered (US patents expired in 2017, but Apple-style ecosystems still treat AAC as the lossy default). For lossless extraction targeting Apple devices, VOB to WAV gives you uncompressed PCM.