TIER 01 · ZERO SERVER BYTES
Browser-local processing
MP4 audio extraction and short video workflows run on-device with lazy-loaded WASM; source files are not uploaded.
MP4 → MP3
AI メディアプロセッサー
動画の変換・圧縮・字幕・ナレーション。
動画変換、音声抽出、大容量ファイル圧縮、字幕とナレーションを一つのワークフローで処理します。
ファイル選択形式と設定ローカル処理結果を保存
人気ツール
すべてのツール → T1
ファイルは端末から送信されません
MP4 to MP3 Converter
Extract MP3 audio from MP4 video locally using FFmpeg.wasm. No server upload.
mp4 · mov · m4v · webm
T3
AI クレジットが必要
AI Subtitle Generator
Generate SRT and VTT subtitles from video or audio, with timestamps and editable text.
mp4 · mov · webm · mp3 · wav · m4a
T3
AI クレジットが必要
AI Voiceover / Text to Speech
Create narration from a script with consent gate, voice options and MP3/WAV export.
txt
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TIER 02 · CLOUD QUEUE
Signed uploads and D1 job state
Large videos move through R2 direct upload, worker-signed access, persistent job records and automatic object expiration.
Compress video
TIER 03 · CREDIT-GATED AI
Responsible AI outputs
Subtitles, transcription, voiceover, denoise and summaries use a complete upload-to-download task flow and safe mock fallback.
AI subtitlesAI voiceoverTranslate subtitles
AI メディア作業台
Open workbench → T3
AI クレジットが必要
AI Subtitle Generator
Generate SRT and VTT subtitles from video or audio, with timestamps and editable text.
T3
AI クレジットが必要
AI Voiceover / Text to Speech
Create narration from a script with consent gate, voice options and MP3/WAV export.
T3
AI クレジットが必要
AI Subtitle Translator
Translate SRT/VTT subtitles or transcribed media into any of 12 languages while preserving timestamps.
最近使用
LOCAL STORAGEYour recently used tools will appear here. Nothing is synced until you create a cloud account.
From the technical manual
Original guides about formats, privacy, codecs and responsible AI media workflows.
2025-10-12How to Extract MP3 Audio from MP4 Without Uploading the Video7 min2025-10-05JPEG vs WebP vs AVIF: Which Image Format Should You Export?6 min2025-09-28What Is FFmpeg.wasm and Why It Helps Keep Browser Conversions Private8 min2025-09-20SRT vs VTT: Subtitle Formats Explained for Creators5 min
すべてのツール
T1
ファイルは端末から送信されません
MP4 to MP3 Converter
Extract MP3 audio from MP4 video locally using FFmpeg.wasm. No server upload.
T2
Pro
Cloud Video Compressor
Large-file video compression with signed R2 upload, D1 job state and automatic deletion.
T3
AI クレジットが必要
AI Subtitle Generator
Generate SRT and VTT subtitles from video or audio, with timestamps and editable text.
T3
AI クレジットが必要
AI Voiceover / Text to Speech
Create narration from a script with consent gate, voice options and MP3/WAV export.
T3
AI クレジットが必要
AI Subtitle Translator
Translate SRT/VTT subtitles or transcribed media into any of 12 languages while preserving timestamps.
Frequently asked questions
Is AIMP8 a new media format?
No. AIMP8 is an AI media processor. It converts, compresses, transcribes and summarizes existing formats rather than replacing MP3, MP4, WebM or any other container.
Are files uploaded for every tool?
No. Tier 1 tools run in the browser through FFmpeg.wasm, Canvas, WebCodecs-compatible APIs and Web Audio. Cloud and AI tools explicitly show storage and retention before processing.
What happens to AI media after processing?
Free cloud jobs are designed for 24-hour retention and Pro jobs for seven days. R2 lifecycle rules provide automatic expiration, and users can manually delete files from the dashboard.
Can I use TTS to clone anyone’s voice?
AIMP8 does not support unauthorized voice cloning. TTS jobs require an authorization confirmation and must not be used for deceptive deepfakes, fraud or impersonation.