Video Conversion

Convert RM to AVI: Free Online Converter

Convert RealMedia to Audio Video Interleave online for free. Fast, secure video conversion with no watermarks or registration.

163,297件のファイルを変換済み

ファイルを選択

またはページ内の任意の場所にドラッグ＆ドロップ

RMに対応

アップロードすることで、これらのファイルの権利を有していること、および利用規約に同意することを確認したものとみなされます。

転送時に暗号化

安全な転送

HTTPS暗号化アップロード

プライバシー優先

ゲストのファイルは約2時間で自動削除

登録不要

すぐに変換を開始

どこでも動作

あらゆるブラウザ、あらゆるデバイス

変換成功率をリアルタイムで見る

RMからAVIへの変換について詳しく見る

RM から AVI への設定

エンジン: メディア
設定: 設定は不要です。適切な初期値が使われます。

変換方法

アップロードエリアにドラッグするか、クリックして選択し、.rmファイルをアップロードしてください。

必要に応じて出力設定を調整してください。デフォルト設定ではオリジナルの品質を維持します。

「変換」をクリックし、準備ができたら.aviファイルをダウンロードしてください。

RMからAVIへの変換について

AVI (Audio Video Interleave) is Microsoft's multimedia container format introduced in 1992 as part of Video for Windows. Despite its age, AVI remains one of the most widely recognized video formats, supported by virtually every media player and video editing application. RM (RealMedia), developed by RealNetworks in 1997, was designed for internet streaming over dial-up connections using proprietary RealVideo codecs (RV10, RV20, RV30) with constant bitrate encoding.

Converting RM to AVI moves content from a dead proprietary streaming format into a universally compatible container. AVI's RIFF-based structure accepts nearly any codec combination, and when paired with modern codecs like H.264 or MPEG-4, produces files that play on everything from Windows Media Player to VLC to hardware media players.

RMをAVIに変換する理由

RM files require specialized decoders that no modern software ships by default. RealPlayer is abandoned, and even VLC's RM support is inconsistent for older codec versions like RV10 and RV20. AVI, by contrast, is universally supported — Windows, macOS, Linux, Android, and virtually every dedicated media player handles AVI natively.

For users in enterprise or institutional environments where AVI is the standard video format (many legacy systems, archival workflows, and hardware players expect AVI), this conversion provides a direct path from dead RM format to organizational compatibility. AVI's simplicity also makes it easy to post-process with video editing tools.

主な活用例

Migrating corporate training video libraries from RM format to AVI for legacy media servers
Converting early internet video archives to AVI for Windows-based media management systems
Preparing RM content for hardware media players and set-top boxes that support AVI natively
Recovering 1990s conference recordings stored as RM files into editable AVI format
Converting RM clips for integration into video editing projects using older NLE software that reads AVI

仕組み

FFmpeg demuxes the RM container and decodes RealVideo (RV10/RV20/RV30) and RealAudio (Cook) streams. Video is re-encoded to MPEG-4 Part 2 or H.264 at a bitrate that matches or exceeds the original RM quality. Audio is re-encoded to MP3 (for maximum AVI compatibility) or AAC. The AVI container interleaves audio and video chunks in the RIFF structure. Since RM files are typically low resolution (176x144 to 352x288), the AVI output preserves these original dimensions.

品質とパフォーマンス

The AVI output will be at least as good as the RM source — modern codecs like H.264 are vastly more efficient than RV10/RV20. However, the source quality is inherently poor: RM files were encoded at 100-500 kbps for dial-up delivery, producing low resolution, low frame rate content with visible compression artifacts. The conversion preserves this quality faithfully but cannot improve it. Think of it as format rescue — saving the content, not enhancing it.

Media EngineModerateMinimal Quality Loss

デバイス互換性

Device	RM	AVI
Windows PC	Partial	Native
macOS	Partial	Partial
iPhone/iPad	Partial	Partial
Android	Partial	Partial
Linux	Partial	Partial
Web Browser	No	No

プラットフォーム別の推奨設定

YouTube

Resolution: 1920x1080

Bitrate: 8-12 Mbps

H.264 recommended for fast processing

Instagram

Resolution: 1080x1080

Bitrate: 3.5 Mbps

Square or 9:16 for Reels

TikTok

Resolution: 1080x1920

Bitrate: 4 Mbps

9:16 vertical, under 60s ideal

Twitter/X

Resolution: 1280x720

Bitrate: 5 Mbps

Under 140s, 512MB max

Resolution: 960x540

Bitrate: 2 Mbps

16MB limit for standard, 64MB for document

Discord

Resolution: 1280x720

Bitrate: 4 Mbps

8MB free, 50MB Nitro

最良の結果を得るためのヒント

1Use MPEG-4 Part 2 codec if the AVI needs to play on older hardware media players — H.264 in AVI is less universally supported than H.264 in MP4.
2Keep the original resolution — do not upscale 176x144 or 320x240 RM content. Upscaling just enlarges compression artifacts without adding detail.
3Use MP3 audio in the AVI container for maximum compatibility — not all AVI players support AAC audio tracks.
4For batch conversion of RM archives, set a constant quality (CRF) mode rather than target bitrate — this handles the variable complexity of RM content better.
5Verify audio sync after conversion — RM files occasionally have timestamp discontinuities that can cause A/V drift in the AVI output.

RMとAVIの比較

特徴	RM	AVI
正式名称	RealMedia	Audio Video Interleave
拡張子	.rm	.avi

よくある質問

H.264 offers the best quality-per-byte but some older AVI players expect MPEG-4 Part 2 (DivX/XviD). Use H.264 for modern playback, MPEG-4 for maximum legacy hardware compatibility.

At equivalent quality, the AVI file should be similar in size or slightly smaller — modern codecs are more efficient than RealVideo. If encoding with H.264, you can often reduce file size while matching the original quality.

Yes — AVI is one of the most universally supported formats for NLE (non-linear editing) software. Adobe Premiere, DaVinci Resolve, and even Windows Movie Maker can import AVI files.

RM was designed for 56 kbps dial-up modems. Resolutions of 176x144 (QCIF) and 320x240 were standard to keep bitrates under 300 kbps. This was the technological reality of late 1990s internet streaming.

Yes — FFmpeg maintains the source aspect ratio. Most RM files are 4:3, which is preserved in the AVI output. No stretching or cropping occurs unless explicitly requested.

他の形式をAVIに変換

DivX to AVI MP4 to AVI MTS to AVI SWF to AVI