VOB to RMVB Converter

How to Convert VOB to RMVB Online

1. Upload Your VOB File: Drag and drop or click "+ Add Files" to select one or more VTS_*.VOB files. Batch upload is supported — queue the full set of VOBs from a VIDEO_TS folder and convert in one pass.
2. Pick Quality Preset and Codec: Default is "Very High" with RealVideo 1.0 (RV10), which is what most legacy RMVB players expect. Drop to "High" or "Medium" if you want noticeably smaller files; switch to RV20 if your target player supports it. You can also force a specific bitrate via Constant Bitrate, target a fixed output size via Specific file size, or use Constraint Quality for VBR with a ceiling.
3. Set Resolution and Trim (Optional): Use Preset Resolutions to drop a 720x480 NTSC DVD down to 480x360 or keep the original aspect with Width (Keep aspect ratio). Use Trim → Time Range to skip the FBI warning, menu loops, or per-VOB stitch seams without re-encoding the whole disc.
4. Convert and Download: Click Convert. Files process server-side and download as .rmvb. No watermark, no sign-up, no software install.

Why Convert VOB to RMVB?

VOB is the DVD-Video container — MPEG-2 video, AC-3 or LPCM audio, and a hard 1 GB per-file cap that splits feature films across VTS_01_1.VOB, VTS_01_2.VOB, and so on. A two-hour movie at DVD bitrates (~4-8 Mbps) typically weighs 4-7 GB across multiple VOB files. RMVB (RealMedia Variable Bitrate, introduced by RealNetworks around 2003) was specifically designed to crush long-form video into a fraction of that size while staying watchable. Even though mainstream RealVideo development wound down after RealNetworks sold those patents to Intel in 2012, RMVB is still the dominant format for archived Chinese and other East Asian TV serials, fansubs, and disc rips on legacy media servers.

• Shrink a DVD rip into one file — A 4-7 GB multi-VOB DVD typically compresses to 300-700 MB as RMVB at watchable quality, and the single-file output kills the VTS_01_1.VOB/VTS_01_2.VOB stitching problem.
• Match an existing RMVB library — If you already keep a TV serial collection in RMVB and want new episodes (ripped from disc as VOB) in the same format, codec, and quality target, conversion keeps the library uniform for tools like Media Player Classic, PotPlayer, and KMPlayer.
• Feed legacy media servers and set-top boxes — Many older Chinese-market DVD players and network media boxes shipped from 2005-2012 list RMVB as a supported codec but choke on raw VOBs that lack proper IFO navigation.
• Distribute over slow links — RMVB at 300-500 kbps for 480p remains a meaningful win over MPEG-2 at 4-8 Mbps when bandwidth or storage on a NAS, USB stick, or older Android tablet is the bottleneck.
• Archive disc content compactly — Multiple physical DVDs can be packed onto a single SD card or thumb drive once each disc collapses from ~4.7 GB of VOBs to a few hundred MB of RMVB.
• Preserve subtitle workflows — Many community fansub releases still ship as RMVB with hard-subbed Chinese or Japanese tracks; converting your VOBs into the same container makes them drop-in compatible with that workflow before adding subs.

If you're starting a fresh archive in 2026, MP4/H.264 or MKV/H.265 is a better long-term bet — see VOB to MP4 or VOB to MKV. Reach for RMVB only when an existing library, player, or device specifically requires it.

VOB vs RMVB — Format Comparison

Quality Preset Guide for RMVB Output

Values are approximate; final size depends on source motion complexity, resolution, and audio bitrate. Use Specific file size if you need a hard cap (for example, "fit this disc rip on a 200 MB free chunk of an SD card").

Frequently Asked Questions

Why is my converted RMVB so much smaller than the source VOBs?

That's the whole point of the conversion. DVD-Video VOBs use MPEG-2, a 1990s codec that needs 4-8 Mbps to look clean, plus uncompressed-style AC-3 or LPCM audio. RMVB uses RealVideo with variable bitrate that drops dramatically during low-motion scenes, plus much more aggressive audio compression. A 4 GB multi-VOB DVD becoming a 400-600 MB RMVB is normal at "Very High" — that's roughly a 7-10x reduction with most viewers not noticing the difference on standard-definition content.

Will the RMVB file combine all my VOBs into one?

Yes, when you queue multiple VTS_01_1.VOB, VTS_01_2.VOB, etc. files from the same title as a single conversion job and enable the merge option, the output is a single .rmvb with the stitching seams handled. If you upload them as separate jobs you'll get separate RMVB files. For a DVD movie you almost always want a single merged output; for a TV-episode disc where each VOB pair is one episode, you may want them split.

Should I pick RV10 or RV20 as the codec?

RV10 (the default) is the most compatible — it plays in virtually every player that has ever supported RMVB, including ancient Chinese DVD players and the original RealPlayer. RV20 is somewhat more efficient but is rejected by some legacy hardware. If your target is a software player on a modern PC (VLC, MPC-HC, PotPlayer), either works fine and RV20 is marginally smaller for the same quality. If your target is a 2008-era set-top box, stay on RV10.

Why convert to RMVB at all in 2026 instead of MP4 or MKV?

For a fresh archive, you shouldn't — H.264 in MP4 or H.265 in MKV give better quality at the same size and play natively on every browser and modern device. The only good reasons to pick RMVB are (1) you're maintaining an existing RMVB library and want format consistency, (2) you're targeting legacy Chinese-market hardware that lists RMVB as a supported codec, or (3) you have a fansub or community workflow that still ships RMVB. Otherwise use VOB to MP4 or VOB to MKV.

Are subtitles from the DVD preserved?

No. VOB subtitles are stored as bitmap VobSub streams referenced by .IFO navigation files, and RMVB doesn't carry that subtitle format. If you need subtitles, hard-burn them into the video frame before or during conversion (some VOB rippers do this), or extract them with a tool like SubRip into .srt and pair the .srt next to the .rmvb in players that load external subs.

Why does my output look softer than the original DVD?

Two reasons. First, RealVideo is a circa-2003 codec that's simply less detail-preserving than modern H.264/H.265 at the same bitrate. Second, you may have dropped resolution — try Preset Resolutions → 720x480 (NTSC) or 720x576 (PAL) to keep the native DVD frame, and bump the preset to "Highest" if you want a near-transparent rip. The trade-off is file size; "Highest" at 720x480 may land at 800-900 MB for a feature film.

Will my AC-3 5.1 surround audio survive the conversion?

No — RMVB doesn't carry AC-3 or DTS surround tracks. The audio gets re-encoded to RealAudio (Cook codec) or AAC as stereo. If your VOB had a 5.1 mix, you'll get a stereo downmix in the RMVB. For archival of surround audio, MKV with the original AC-3 passthrough is a much better target than RMVB.

Can I rip the VOBs straight from a DVD into RMVB?

You need to copy the VOB files off the disc first (e.g., using a tool like MakeMKV or HandBrake to read the disc, or simply copying the VIDEO_TS folder if the disc isn't copy-protected). xconvert accepts the VOB files as input but doesn't read DVD discs directly. Commercial DVDs typically have CSS encryption you'll need to handle before the VOBs are usable.

What players still handle RMVB in 2026?

VLC, MPC-HC, PotPlayer, KMPlayer, and MPlayer all still decode RMVB on Windows, macOS, and Linux. On Android, MX Player and VLC handle it. iOS has no native support; you'd need VLC for iOS or convert to MP4 first via RMVB to MP4. Browser playback is essentially nonexistent — no major browser decodes RealVideo natively.