Skip to main content
Convert999
FormatosTodos los ConvertidoresCompararCasos de UsoToolsBlog
Convertidor
Convert999

Convertidor de archivos online gratuito con soporte para más de 400 formatos.

Producto

  • Todos los Convertidores
  • Formatos
  • Comparar
  • Casos de Uso
  • Tools

Recursos

  • Acerca de
  • Blog
  • Security
  • Glossary
  • Statistics
  • Changelog
  • Contact

Legal

  • Política de Privacidad
  • Términos de Servicio

© 2026 Convert999. Todos los derechos reservados.

Made with for the web

HomeRM vs MKV
.rm
.mkv

RM vs MKV

Compare RealMedia and Matroska Video formats — understand the key differences and when to use each

Format Overview

RM

RealMedia

RealMedia (.rm) is a video file format.

.rmvideo

MKV

Matroska Video

MKV (Matroska Video) is an open-source, flexible video container format created in 2002. MKV can hold virtually unlimited video, audio, subtitle, and attachment tracks in a single file, making it the most versatile video container available. It supports every major video codec (H.264, H.265, VP9, AV1), audio codec (AAC, FLAC, DTS, TrueHD, Atmos), and subtitle format (SRT, ASS, PGS). MKV is the preferred format for high-quality video collections, Blu-ray rips, and anime with multiple audio and subtitle tracks. It supports chapters, menus, metadata, and attached fonts. While MKV has excellent software support (VLC, MPV, Plex), some hardware devices and smart TVs have limited MKV compatibility. For maximum compatibility, converting MKV to MP4 is recommended.

.mkvvideo

RM vs MKV: Feature Comparison

FeatureRMMKV
Full NameRealMediaMatroska Video
File Extension.rm.mkv
Categoryvideovideo
Free to Convert✓ Yes✓ Yes
Browser Support✓ All Browsers✓ All Browsers
Convert to Each Other✓ Yes✓ Yes

When to Use RM vs MKV

Use RM when you need:

  • •Files in RealMedia format for maximum compatibility
  • •Industry-standard video format support
  • •Wide software and platform compatibility

Use MKV when you need:

  • •Files in Matroska Video format for specific workflows
  • •Optimized video format features
  • •Modern format advantages and smaller file sizes

Convert Between Them

RM MKVMKV RM
Elegir Archivos

o arrastra y suelta archivos aquí

Tamaño máximo: 2GB

Tus archivos se procesan localmente en tu navegador. Nada se sube a ningún servidor.

Learn More About These Formats

RM Converter MKV Converter

Frequently Asked Questions

What is the difference between RM and MKV?
RM (RealMedia) and MKV (Matroska Video) are both video file formats. RM files use the .rm extension while MKV uses .mkv. They differ in compression, quality, compatibility, and intended use cases.
Can I convert RM to MKV for free?
Yes! Convert999 lets you convert RM to MKV completely free, directly in your browser. No file upload to any server, no registration needed — your files stay private on your device.
Which is better, RM or MKV?
It depends on your use case. RM (RealMedia) may be better for certain workflows, while MKV (Matroska Video) excels in others. Consider factors like file size, quality, software compatibility, and your specific needs.
Is it safe to convert files on Convert999?
Absolutely. Convert999 processes all files 100% locally in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.

RM Converter

Convert from RM

MKV Converter

Convert from MKV

File Tools

Compress, resize, merge

Convert to RM

All sources → RM

Convert to MKV

All sources → MKV

Format Statistics

Trends & data 2025

More Format Comparisons

JPGvsPNGPNGvsWEBPJPGvsWEBPSVGvsPNGHEICvsJPGBMPvsJPGTIFFvsJPGGIFvsPNG