Video Conversion
Convert MP4 to RMVB Online — Free
Fast, free MP4 to RMVB converter. No registration required.
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200万以上のファイル変換
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処理後にファイルを自動削除
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すぐに変換を開始
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変換方法
1
Upload your .mp4 file by dragging it into the upload area or clicking to browse.
2
Choose your output settings. The default settings work great for most files.
3
Click Convert and download your .rmvb file when it's ready.
MP4とは？
MP4 is the most widely used video container format. It stores video, audio, subtitles, and metadata. Compatible with virtually every device and platform, from smartphones to smart TVs.
形式の詳細
- 正式名称
- MPEG-4 Part 14
- 拡張子
- .mp4
主な特徴
- Universal compatibility
- Streaming support
- Small file sizes
- Hardware-accelerated playback
RMVBとは？
RMVB is a RealNetworks video format using variable bitrate encoding. Popular in Asia for distributing TV shows and movies due to excellent compression ratios.
形式の詳細
- 正式名称
- RealMedia Variable Bitrate
- 拡張子
- .rmvb
主な特徴
- Variable bitrate
- Good compression
- Streaming support
- Asian media
MP4とRMVBの比較
| 特徴 | MP4 | RMVB |
|---|---|---|
| 正式名称 | MPEG-4 Part 14 | RealMedia Variable Bitrate |
| 拡張子 | .mp4 | .rmvb |
| 最適な用途 | Universal compatibility | Variable bitrate |
よくある質問
Our converter preserves resolution, frame rate, and audio tracks by default. The RMVB output uses optimized codec settings to maintain quality as close to the original MP4 as possible.
Free users can convert videos up to 100MB. Pro users can convert files up to 2GB with server-side processing — no software installation needed.
Most videos convert in under 60 seconds. Longer or higher-resolution files may take 1-3 minutes. Processing runs on our servers, so your device stays fast.
Yes. Our video converter is browser-based — works on iPhone, Android, tablet, and desktop. No app download required.
Yes. Audio is preserved by default during video conversion. You can also adjust audio codec, bitrate, and volume in the advanced settings.