Format de fichier

À propos des fichiers RM

RM (RealMedia · Format vidéo)

Lancement 1995 Par Progressive Networks (RealNetworks)

RealMedia (.rm) est un format de fichier pris en charge par KaijuConverter pour l’archivage, l’échange professionnel et la conversion multiplateforme.

Famille

Video Files

Extension

.rm

Type MIME

application/vnd.rn-realmedia

Utilisable comme

Entrée

L'histoire

COMMENT RM
A VU LE JOUR.

1995

1997

2005

RealMedia — .rm — was the container for RealAudio and RealVideo streams, both pioneered by Progressive Networks (later RealNetworks) starting in 1995. RealAudio 1.0 was the first streaming audio codec usable over 28.8 kbit/s dial-up; RealVideo arrived in 1997 as the first credible streaming video codec. For a stretch of the late 1990s, if you watched news clips, listened to a talk radio show’s archive, or heard a sports broadcast online, you used the RealPlayer.

Then RealNetworks made a series of strategic missteps: the player bundled adware, nag screens multiplied, users migrated to Windows Media and later to Flash. By 2005 RealMedia was the format nobody wanted and nobody removed — a vestige of the early streaming web. The company still exists; the format does not meaningfully exist outside legacy archive sites.

CURIOSITÉS ET
ANECDOTES.

RealAudio 1.0 (1995) was the first codec that could stream voice over a 28.8 kbit/s dial-up modem in real time.

For most of the late 1990s, RealPlayer was the most-downloaded software on the planet — peaking at over 90 million installs.

The RealPlayer installer's bundled spyware and nag screens became internet-famous as the worst-behaved widely-installed software of the era.

RealVideo was the default format for BBC Radio archives and ESPN sports clips from 1997 to about 2005.

Apple's QuickTime Player rejected RealMedia playback in the late 2000s by policy — users had to install the standalone RealPlayer.

POINTS FORTS ET
LIMITES.

Points forts

First viable streaming format for dial-up audiences.
Historic archive value for late-1990s web content.
Variants covered voice, music, and video.

Limites

Commercially abandoned — RealNetworks pivoted away from player software.
Bundled adware and UX hostility damaged the brand permanently.
Modern browsers do not support RealMedia.
Replaced by Flash Video, then HTML5.
Archival format only.

Tailles et poids typiques

Voice-grade audio (5 min at 20 kbps)

~750 KB

Video clip (5 min at 56 kbps dial-up)

~2 MB

Spécifications techniques

MIME type: application/vnd.rn-realmedia
Extensions: .rm, .rmvb (VBR), .ra (audio only)
Codecs: RealAudio (cook, sipr), RealVideo (rv10-40)
Native player: RealPlayer (legacy)
Status: Deprecated

CONVERTIR DEPUIS
RM

rm jpg rm png rm webp rm gif rm bmp rm mp4 rm mov rm mkv rm avi rm webm rm flv rm wmv rm mpeg rm 3gp rm mp3 rm wav rm flac rm aac rm m4a rm ogg rm opus rm wma rm ogv rm m4v rm ts rm asf rm dv rm f4v rm h264 rm h265 rm m2v rm mjpeg rm mxf rm rmvb rm divx rm nut rm y4m

CONVERTIR EN
RM

asf rm dv rm f4v rm h264 rm h265 rm m2v rm mjpeg rm mxf rm rmvb rm divx rm nut rm y4m rm

Cas d'usage courants

Legacy streaming video, early web multimedia, RealPlayer content