Convert WMV to 3GP: Free Online Converter
Convert Windows Media Video to 3GPP Multimedia online for free. Fast, secure video conversion with no watermarks or registration.
WMV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。
変換設定: ファイルを追加すると調整できます
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
WMV から 3GP への設定
- エンジン
- メディア
- 設定
- 調整できる設定: 22
- Trim Start
- Trim End
- Volume
- Audio Fade In
- Audio Fade Out
- Quality
- Resolution
- Frame Rate
- Resize Mode
- Audio Channels
- Crop X
- Crop Y
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、.wmv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.3gpファイルをダウンロードしてください。
WMVから3GPへの変換について
WMV (Windows Media Video) files use Microsoft's ASF container with VC-1 or WMV2 video codecs: a proprietary format standardized as SMPTE 421M for Blu-ray. 3GP (3GPP Multimedia) is a mobile-oriented container carrying H.263 or MPEG-4 Part 2 video at low resolutions for cellular networks. Converting WMV to 3GP transcodes Microsoft's desktop-oriented video into an ultra-compact mobile format, shrinking file sizes by 95% or more while targeting devices on 2G/3G networks where bandwidth is severely limited.
WMVを3GPに変換する理由
3GP was built for the constraints of early mobile networks — tiny resolutions, minimal bitrates, and voice-grade audio. If you have WMV files from a Windows Media Player library or Silverlight-era website and need to deliver them to legacy feature phones, MMS recipients, or bandwidth-constrained mobile users, 3GP provides the smallest viable video file. Many older Nokia, Motorola, and Samsung feature phones support only 3GP for video playback.
主な活用例
- Sending WMV presentation recordings via MMS to recipients on feature phones
- Converting WMV training videos for deployment on basic handsets in developing markets
- Creating low-bandwidth video previews from WMV content for WAP-based mobile sites
- Shrinking WMV conference recordings for quick mobile review on legacy corporate handsets
- Distributing WMV promotional videos as 3GP files for markets with limited mobile bandwidth
仕組み
FFmpeg decodes the WMV/VC-1 video and WMA audio from the ASF container, then re-encodes video to H.263 or MPEG-4 Part 2 at 64–256 kbps and audio to AMR-NB at 12.2 kbps or AAC-LC at 32–48 kbps. Resolution is downscaled to QCIF (176x144) or CIF (352x288). Frame rate is capped at 15 fps. The 3GP container includes metadata for mobile player compatibility.
品質とパフォーマンス
Quality is heavily constrained by 3GP's mobile-targeted specifications. Fine detail is lost at QCIF resolution, and fast motion produces visible blocking. Audio via AMR-NB sounds like a phone call — intelligible for speech, poor for music. The conversion prioritizes small file size over visual fidelity.
デバイス互換性
| Device | WMV | 3GP |
|---|---|---|
| Windows PC | Native | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Native |
| 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
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 CIF resolution (352x288) with MPEG-4 Part 2 at 192 kbps for the best balance of quality and file size on modern feature phones.
- 2Switch to AAC-LC audio at 48 kbps instead of AMR if the target phone supports it — the audio quality improvement is significant for music.
- 3Test the output on the actual target device, as 3GP playback varies between manufacturers and firmware versions.
- 4For the absolute smallest files, use QCIF (176x144) with AMR-NB audio — the result is under 1 MB per minute.
関連する変換
WMV to 3GP conversion serves the specific need of delivering Windows Media content to legacy mobile devices. The dramatic file size reduction comes at the cost of visual and audio quality, but 3GP remains unmatched for ultra-low-bandwidth mobile delivery.
WMVと3GPの比較
| 特徴 | WMV | 3GP |
|---|---|---|
| 正式名称 | Windows Media Video | 3GPP Multimedia |
| 拡張子 | .wmv | .3gp |