MTS to RMVB Converter

Convert MTS to RMVB: Read This First

MTS is the AVCHD stream your Sony or Panasonic camcorder writes to its memory card — H.264 video up to 1920x1080 with AC-3 (Dolby Digital) or LPCM audio, introduced by Sony and Panasonic in 2006. RMVB is the variable-bitrate variant of RealNetworks' RealMedia, introduced in 2003 for locally stored video, and its ecosystem wound down after RealNetworks sold its video patents and next-generation codec software to Intel for $120 million, a deal completed on April 5, 2012. So converting modern HD camcorder footage into RMVB re-encodes H.264 backward into an abandoned, less efficient RealVideo codec and produces a file that almost nothing plays in 2026. Most people who land here actually want footage that plays everywhere — that is MTS to MP4, not this. Only continue with RMVB if a specific legacy system or archive genuinely requires a .rmvb.

MTS vs RMVB — Side-by-side

RMVB vs RM — Which RealMedia Are You Targeting?

RMVB and .rm are not the same RealMedia file, and the legacy system you are feeding usually wants one specifically:

• RMVB is the variable-bitrate (VBR) variant, introduced in 2003 for locally stored video — it gives complex scenes more bits and quiet scenes fewer, so a stored file is smaller at comparable quality. This made it the format of choice in the mid-2000s Asian-market and fansub scene for distributing TV episodes and movies over BitTorrent and eDonkey.
• Plain .rm is the older constant-bitrate (CBR) variant, built for streaming over dial-up and early broadband where a steady bitrate mattered more than per-scene efficiency. RM is the predecessor; RMVB is the later, storage-oriented refinement of the same RealMedia technology.

If your target archive or tooling specifically expects a streaming-era .rm instead, use MTS to RM. Otherwise RMVB is the right choice for a stored, variable-bitrate RealMedia file.

When RMVB Is the Right Target

• A legacy media archive indexes its catalog by .rmvb filenames and has not been migrated.
• You are matching an existing RMVB collection — for example a fansub-era library where every other file is .rmvb.
• Un-migrated courseware or an old intranet player specifically expects RealMedia VBR.
• You are testing or restoring a system that was built around RealPlayer-era tooling.

When to Convert to MP4 Instead (Almost Always)

• You want the footage to play on a phone, laptop, browser, or smart TV without hunting for a decoder.
• You plan to edit the clip — almost no current editor imports RMVB, but every editor takes H.264 MP4.
• You care about keeping the camcorder's quality: re-encoding H.264 into RealVideo loses efficiency and detail for no playback benefit.
• You are not feeding a specific legacy RealMedia system — in which case MTS to MP4 is the correct conversion.

If you are going the other direction and need to get footage out of an old .rmvb and back onto a camcorder-style format, use the reverse converter, RMVB to MTS.

How to Convert MTS to RMVB

1. Upload Your MTS File: Drag and drop your .MTS clip onto the page, or click "Add Files" to browse. You can queue several clips and they share the same output settings.
2. Set the Video Codec to RealVideo: Open "Show All Options" and leave Video Codec on RealVideo 1.0 (RV10), the default — it is the H.263-class codec the most RealMedia players recognize. RealVideo 2.0 (RV20) is the only other choice. Both are far less efficient than the H.264 in your MTS.
3. Pick Quality, Resolution, and Trim (Optional): Choose a Quality Preset (the default is "Very High (Recommended)") or switch to Constant Bitrate or Specific file size for an exact MB target. Use Video resolution to scale the 1080p source down to a streaming-era frame size, and switch Trim from "Unchanged" to a Time Range to export just one section.
4. Convert and Download: Click "Convert" and download your .rmvb. No sign-up, no watermark.

Frequently Asked Questions

Should I convert MTS to RMVB or to MP4?

For almost every modern goal, MP4. The only honest reason to make an .rmvb is feeding an un-migrated legacy system — an old media archive indexed by .rmvb filenames, a fansub-era library you are matching, or RealPlayer-era courseware nobody has migrated. If none of those apply, MTS to MP4 keeps your camcorder's H.264 quality and plays in every browser, phone, and editor without a RealMedia decoder.

Will the RMVB file play on modern devices and browsers?

No, not natively. RealVideo development stopped after RealNetworks sold its video patents and codec software to Intel in 2012, and no current browser, phone, or smart TV decodes RealMedia VBR out of the box. To play the .rmvb you generally need VLC, MPlayer, or another FFmpeg-based player; the official RealPlayer is rarely installed today. This is the core reason the page steers most people to MP4 instead.

Will I lose quality converting H.264 MTS to RMVB?

Yes, some. RealVideo (RV10/RV20) is an H.263-era codec, roughly half as efficient as the H.264 inside your MTS, so matching the source quality needs a higher bitrate and a low bitrate looks blocky. In our testing, a 60-second 1080p AVCHD clip re-encoded to RV10 at a streaming-era resolution looked noticeably softer than the H.264 source at the same bitrate — that is the codec, not the converter. You are doing this to satisfy a legacy .rmvb requirement, not to gain anything technically.

What's the difference between RMVB and a plain RM file?

RMVB uses variable bitrate (VBR) and was designed in 2003 for locally stored video, giving complex scenes more bits and quiet scenes fewer for a smaller file at comparable quality. Plain .rm is the older constant-bitrate (CBR) variant built for streaming. They share RealMedia technology, but if a system specifically wants the streaming-era container, use MTS to RM instead of this RMVB converter.

What happens to the AC-3 or LPCM audio from my MTS?

It is transcoded to RealAudio, the period-correct audio pairing for a RealMedia file, so the output is a self-consistent .rmvb. A 5.1 surround track from the camcorder is downmixed to stereo during conversion. RealAudio is the most broadly compatible choice for legacy RealPlayer-era tooling that expects RealMedia VBR.

Why was RMVB so common for Asian TV and movie downloads?

Because variable bitrate made stored episodes small without obviously hurting quality, RMVB became the default container in the mid-2000s Asian-market and fansub scene — Chinese TV episodes and movies in particular spread as .rmvb over BitTorrent and eDonkey. If you are converting MTS to match such a library, RMVB is the right target; if you just want the clip to play anywhere today, MTS to MP4 is the better choice.

What happens to my file after I convert it?

Your MTS is uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion. Files are never shared or made public, and there is no sign-up or watermark.