Convert MTS to AVI: Free Online Converter
Convert AVCHD Video to Audio Video Interleave online for free. Fast, secure video conversion with no watermarks or registration.
MTS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
MTS から AVI への設定
- エンジン
- メディア
- 設定
- 調整できる設定: 23
- Trim Start
- Trim End
- Volume
- Audio Fade In
- Audio Fade Out
- Video Codec
- Quality (CRF)
- Resolution
- Frame Rate
- Resize Mode
- Audio Channels
- Crop X
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、.mts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。
MTSからAVIへの変換について
AVI (Audio Video Interleave), Microsoft's 1992 video container, uses an indexed frame structure that enables fast, frame-accurate seeking: a critical feature for video editing that the MPEG-2 Transport Stream format used by MTS/AVCHD lacks. Converting MTS to AVI moves camcorder footage into an editing-friendly container compatible with VirtualDub, older versions of Adobe Premiere, and Windows-based video production systems.
MTSをAVIに変換する理由
The MPEG-2 Transport Stream container used by AVCHD was designed for streaming and broadcast, not for frame-accurate editing. Its packet-based structure can cause timeline misalignment in editors that expect AVI's sequential frame index. Some NLE software (particularly older Windows-based systems) only accepts AVI input, and scientific video analysis tools often require AVI for frame-by-frame examination.
AVI also supports uncompressed and lossless intermediate codecs (HuffYUV, Lagarith, UTVideo) that are essential for multi-generation editing workflows. Converting MTS camcorder footage to a lossless AVI intermediate eliminates compression artifacts before grading, compositing, and effects processing.
主な活用例
- Importing camcorder footage into VirtualDub for frame-level editing and filtering
- Preparing AVCHD recordings for legacy Windows NLE systems requiring AVI input
- Creating lossless AVI intermediates from camcorder footage for professional post-production
- Loading camcorder video into scientific analysis software that mandates AVI format
- Converting AVCHD to AVI for forensic video analysis with frame-accurate seeking
仕組み
FFmpeg deinterlaces and transcodes: `-vf yadif -c:v libx264 -crf 18 -c:a pcm_s16le -f avi` for compressed AVI, or `-vf yadif -c:v huffyuv -c:a pcm_s16le` for lossless AVI intermediate. The AVI container does not support B-frames natively, so H.264 encoding should use `-bf 0` or Baseline profile if stream copying is attempted. Uncompressed PCM audio is standard for editing workflows.
品質とパフォーマンス
Lossless AVI (HuffYUV/UTVideo) preserves every pixel from the deinterlaced MTS source, providing the maximum possible editing quality. H.264 at CRF 18 is visually lossless with a reasonable file size penalty. Uncompressed rawvideo in AVI is also possible but produces approximately 11 GB per minute at 1080p.
デバイス互換性
| Device | MTS | 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
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 HuffYUV or UTVideo codec for lossless intermediates — they provide 2:1 compression with zero quality loss
- 2Always deinterlace MTS footage before encoding to AVI — interlaced content causes problems in most editing software
- 3Pair video with PCM audio (not compressed) for editing workflows — every editor handles PCM natively
- 4For VirtualDub compatibility, use AVI with Xvid, H.264, or HuffYUV — these are its best-supported codecs
- 5If the AVI file exceeds 2 GB, verify your target application supports OpenDML (AVI 2.0) format
関連する変換
MTS to AVI conversion gives editors frame-accurate, indexed video from AVCHD camcorder recordings, suitable for legacy NLE systems and scientific analysis tools that require the AVI container format.
MTSとAVIの比較
| 特徴 | MTS | AVI |
|---|---|---|
| 正式名称 | AVCHD Video | Audio Video Interleave |
| 拡張子 | .mts | .avi |