RMVB to MTS Converter

RMVB to MTS — and Whether MTS Is the Right Target

RMVB is the variable-bitrate flavor of RealMedia that an entire era of fansubbed shows, movie rips, and downloaded archives shipped in. If you are pulling one of those .rmvb files into a modern editor, this converts it to MTS (AVCHD) by re-encoding RealVideo to H.264. Be honest with the goal first, though: MTS only earns its place inside an AVCHD camcorder or NLE workflow. If you just want the video to play, RMVB to MP4 is the better target — and if you only want the soundtrack, RMVB to MP3 pulls the audio out directly. The comparison below shows why.

RMVB vs MTS at a Glance

When MTS Is the Right Choice

• You are importing the clip into an editor (or camcorder-import tool) that auto-detects .mts as AVCHD footage and treats it as native HD source.
• Your AVCHD pipeline specifically wants H.264 video with AC-3 audio — set Audio Codec to AC3 to mirror the spec.
• You are matching the container of existing AVCHD camcorder clips so everything sits on one timeline without per-clip transcoding prompts.

When You Actually Want MP4 or MP3 Instead

• You just want it to play. MP4 with H.264 + AAC opens on essentially every phone, browser, smart TV, and editor; plain MTS does not. Use RMVB to MP4 — this is the right call for most people converting an old Real archive.
• You only need the audio — a song, a lecture, a dub track. RMVB to MP3 extracts it without carrying the video.
• You are archiving, not editing. MP4 is smaller for the same quality and far more future-proof than an AVCHD stream file.

How to Convert RMVB to MTS

1. Upload Your RMVB File: Drag and drop your .rmvb file or click "+ Add Files." Batch upload works — queue several clips and they convert with the same settings. Files are uploaded over an encrypted connection.
2. Confirm the Video and Audio Codec: Under Advanced Options, MTS output defaults to H.264 video with AAC audio. Leave H.264 as-is for AVCHD-editor compatibility; switch Audio Codec to AC3 if your pipeline wants true AVCHD audio.
3. Set Resolution and Quality (Optional): Set Video resolution to "Keep original" (recommended for SD Real sources — there is no detail to upscale into), pick a Preset like "Very High," or cap output with Specific file size. Use Trim to keep just a time range.
4. Convert and Download: Click "Convert" and download your .mts file. No sign-up, no watermark.

Frequently Asked Questions

Should I convert my RMVB to MTS or to MP4?

For most people, MP4. MTS earns its place only inside an AVCHD editing or camcorder-import workflow where a tool auto-detects .mts as native HD footage — that is a narrow reason. For general playback, sharing, or archiving, RMVB to MP4 gives you a file that opens on virtually any device and is smaller for the same quality. Pick MTS only when a specific AVCHD pipeline asks for it.

Will converting RMVB to MTS improve the video quality?

No. RealVideo inside an RMVB file is lossy, and those losses are permanent — re-encoding to H.264 cannot rebuild detail the original encode already discarded, and the H.264 pass itself adds a second, smaller round of loss. A clip that was distributed at a low VBR bitrate will look just as soft in MTS. The conversion gives you an editable modern H.264 file, not a sharper picture; use a high quality preset so the re-encode adds as little as possible.

My RMVB is only 320×240-ish — should I upscale it to 1080p?

No. RMVB was the format people used to keep movies and TV episodes small enough to download over slow connections, so most archives sit at SD resolutions like 320×240. Upscaling to 1080 only interpolates pixels and bloats the file without adding real detail. Set Video resolution to "Keep original" so the MTS keeps the source dimensions. Genuine upscaling needs AI tooling, not a format conversion.

Does the RMVB's RealAudio soundtrack carry over cleanly to MTS?

Not as-is — it is re-encoded. RMVB carries RealAudio (the Cook family of codecs), which AVCHD does not use, so this tool re-encodes the audio to AAC by default, or AC3 if you select it for a strict AVCHD pipeline. Because RealAudio is already lossy, that re-encode is a second lossy pass; pick a high quality setting to keep it transparent. If the audio is all you actually want, RMVB to MP3 extracts it directly.

Why does my RMVB refuse to convert at all?

The most common cause is DRM. Many paid 2000s RealMedia downloads were encrypted, and no server-side converter can decode a protected stream — you would need the original DRM-licensed player. A corrupted or partially-downloaded archive can also fail. Plain, unprotected RMVB (the kind most fansub-era and file-sharing archives use) converts without trouble. Worth migrating these now: RealVideo decoders survive today mainly through open-source projects like FFmpeg rather than RealNetworks itself, which sold the bulk of its video-codec patents and next-generation codec software to Intel in a deal completed April 5, 2012.

Is my file kept private after the conversion?

Yes. Your RMVB file is uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion. No account is required, there are no watermarks, and files are never shared or made public. If you need the reverse direction, MTS to RMVB re-encodes AVCHD footage back into the RealMedia container.