VOB to RM Converter

How to Convert VOB to RM Online

1. Upload Your VOB File: Drag and drop or click "Add Files" to select VOB segments from your VIDEO_TS folder. Batch upload is supported, and DVDs are typically split into multiple 1 GB VOB files that you can convert together.
2. Pick a Quality Preset: Default is Very High (Recommended). Choose Highest or High for archival fidelity, Medium for a balanced size, or Low / Very Low / Lowest for narrow-bandwidth streaming workflows. Switch to Constant Bitrate to lock the file size, Constant Quality for a CRF-style target, or set a Specific file size in MB.
3. Set Video Resolution and Trim (Optional): Use Preset Resolutions (4320p down to 144p), keep the original DVD frame (NTSC 720x480 or PAL 720x576), enter a custom Width x Height, or scale by Resolution Percentage. Use Trim → Time Range to clip a single chapter from a multi-title DVD VOB.
4. Convert and Download: Click Convert. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared.

Why Convert VOB to RM?

VOB (Video Object) is the DVD-Video container defined by the DVD Forum: an MPEG program stream that wraps H.262/MPEG-2 video, MPEG-1/2 Layer II audio or AC-3 (Dolby Digital), subpictures, and DVD navigation data. DVDs split each title into 1 GiB VOB segments inside the VIDEO_TS folder. RealMedia (.rm) is the proprietary container RealNetworks shipped in February 1997 alongside RealPlayer 4.0, built around the RealVideo (RV10/RV20/RV30/RV40) and RealAudio codec families. RM was the dominant streaming format of the late 1990s and is now a legacy archive format.

• Match a legacy RealServer or RealPlayer pipeline — Some corporate training libraries, university lecture archives, and regional broadcasters still ingest content through RealMedia-based delivery chains. RM is the input those systems expect.
• Rip a single DVD chapter for a RealMedia archive — DVDs ship as 1 GB VOB chunks. Trim the segment you care about and re-encode to a small RM file that fits the rest of the collection's codec choice (RV10 or RV20).
• Shrink DVD video for bandwidth-constrained playback — A typical DVD VOB at 5-7 Mbps MPEG-2 can be re-encoded to RV20 in the low hundreds of kbps for slow networks or older Linux/BSD systems that already have the RealPlayer codec installed.
• Feed older media players that lack DVD/MPEG-2 support — RealPlayer, VLC, and MPC-HC all decode RM cleanly; some older embedded players ship RealMedia codecs but no MPEG-2 decoder.
• Preserve format consistency in an existing.rm library — If your existing footage is RealMedia, converting incoming DVD rips to RM keeps cataloging, search, and playback tooling uniform.

For modern devices (iPhone, Android, web browsers, smart TVs), MP4/H.264 is the more compatible target — see VOB to MP4 instead. Use this page when RealMedia is specifically required.

VOB vs RM — Format Comparison

RealMedia Codec Quick Guide

xConvert defaults to RV20 with RealAudio because that pairing has the broadest decoder coverage across legacy RealPlayer, VLC, and MPC-HC builds.

Frequently Asked Questions

Why would anyone still convert VOB to RM in 2026?

For most users the answer is "they shouldn't" — MP4/H.264 is the modern target. The remaining legitimate reasons are: feeding an archive or corporate training pipeline that was built around RealMedia, matching the codec of an existing.rm collection so cataloging stays uniform, or supplying a legacy RealServer streaming setup that hasn't been migrated. If none of those apply to you, VOB to MP4 or VOB to MKV will produce a more compatible file.

What plays an RM file today?

VLC plays Real Video 1/2/3/4 and Real Audio natively on Windows, macOS, and Linux — no extra codec install needed. MPC-HC on Windows also handles RM. RealPlayer is the original native player but is no longer required. Modern web browsers, iOS, and Android do not play RM in their native players, which is why MP4 is the safer choice when device compatibility matters.

Should I pick RV10, RV20, RV30, or RV40?

RV20 (1999) is the safest default — it has the widest decoder coverage in legacy RealPlayer and VLC builds. Use RV10 only when you are targeting very old RealPlayer 4.x installs from 1997-1998. RV30 (2001) and RV40 (2003+) give better quality at the same bitrate but require newer decoders. If you're not sure, leave the codec at its default and tune the Quality Preset dropdown instead.

My DVD has multiple VOB files (VTS_01_1.VOB, VTS_01_2.VOB...) — how do I convert them?

That's normal: DVD-Video specifies a 1 GiB cap per VOB segment, so titles longer than ~25 minutes at DVD bitrates are split. Upload all the segments that belong to a single title together; each becomes its own RM file. If you want one continuous RM, convert each segment individually and then merge them with a tool like VLC or ffmpeg.

How small can I make the output RM file?

Very small — RM is designed for streaming over slow networks and can deliver watchable video in the 50-250 kbps range, well below the 5-9 Mbps that the source DVD VOB uses. Use Constant Bitrate to lock the rate exactly, or Specific file size to target an absolute MB ceiling. Quality drops sharply below ~200 kbps for SD content, especially on motion-heavy footage.

Will the DVD subtitles or chapter menus survive the conversion?

No. VOB stores subpictures (bitmap subtitle overlays) and IFO navigation outside the elementary video/audio streams, and RealMedia has no equivalent containers for either. Only the video and audio of the segment you upload come across. If you need subtitles in the output, burn them into the video before conversion or pick a target format like MKV that supports soft subtitle tracks.

Does the converter handle the AC-3 (Dolby Digital) audio in my VOB?

Yes — AC-3 is one of the standard DVD audio codecs, and xConvert decodes it on the server and re-encodes it as RealAudio inside the RM container. Multi-channel AC-3 is typically downmixed to stereo because legacy RealAudio decoders do not reliably handle surround. If you need to preserve 5.1 audio, MKV is the better target.

Can I trim the DVD VOB before converting to RM?

Yes. Open the Trim option, switch to Time Range, and enter start and end timestamps in HH:MM:SS.ms format. This is useful when a single title VOB contains menu loops, multiple chapters, or trailing material you don't want in the RM output. Trimming happens before re-encoding, so it also reduces the time the conversion takes.

Is there a file size limit on uploads?

Single uploads can be quite large — DVD VOB segments are capped at 1 GiB by the DVD-Video spec itself, and xConvert handles files at that scale without an external account. For multi-segment DVD rips, upload the segments as a batch rather than concatenating them locally first.

How does this compare with converting to RMVB?

RMVB is the variable-bitrate variant of RealMedia, optimized for storage rather than streaming. It generally produces smaller files at the same perceptual quality but is harder for older RealPlayer builds to seek through. If you need streaming behavior, stick with RM (CBR). If you need archival compactness and your players support it, use VOB to RMVB instead.