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AC3 File Format

Dolby Digital Audio category

AC3(Dolby Digital)は映画や DVD のサラウンド音声形式です。複数チャンネルを効率よく圧縮します。

Typical use: サラウンド音声を確認用にステレオの MP3/WAV へ変換します。

About the AC3 format

AC3(Dolby Digital)は映画や DVD のサラウンド音声です。複数チャンネルを効率よく圧縮して収めます。

ステレオ環境で確認するには MP3/WAV への変換が便利です。家庭用機器の多くがこの形式を再生できます。

Strengths

  • ✓ 5.1ch など多チャンネルに対応
  • ✓ 互換性が広い

Limitations

  • ✗ ステレオに落とすと情報が減る
  • ✗ 編集には向かない
Compression
Lossy (Dolby Digital)
Quality
5.1 at 384–640 kbps
Compatibility
Home theatre gear
Best for
Disc and broadcast audio tracks

Convert AC3 to…

26 direct directions plus 21 workflows, sorted A–Z; 🔥 marks popular targets.

Convert other files to AC3…

AAC を AC3 に変換 Hot AIF を AC3 に変換 AIFF を AC3 に変換 ALAC を AC3 に変換 AMB を AC3 に変換 AMR を AC3 に変換 APE を AC3 に変換 AU を AC3 に変換 AVR を AC3 に変換 CAF を AC3 に変換 CVS を AC3 に変換 CVU を AC3 に変換 DSS を AC3 に変換 DTS を AC3 に変換 E-AC3 を AC3 に変換 F32 を AC3 に変換 F4A を AC3 に変換 F4B を AC3 に変換 F64 を AC3 に変換 FAP を AC3 に変換 FLAC を AC3 に変換 Hot FSSD を AC3 に変換 GSM を AC3 に変換 GSRT を AC3 に変換 HCOM を AC3 に変換 HTK を AC3 に変換 IRCAM を AC3 に変換 M4A を AC3 に変換 Hot M4B を AC3 に変換 M4R を AC3 に変換 MAUD を AC3 に変換 MOD を AC3 に変換 MP2 を AC3 に変換 MP3 を AC3 に変換 Hot NIST を AC3 に変換 OGA を AC3 に変換 OGG を AC3 に変換 Hot OMA を AC3 に変換 OPUS を AC3 に変換 PAF を AC3 に変換 PVF を AC3 に変換 QCP を AC3 に変換 S16 を AC3 に変換 S24 を AC3 に変換 S32 を AC3 に変換 S3M を AC3 に変換 SD2 を AC3 に変換 SF を AC3 に変換 SHN を AC3 に変換 SMP を AC3 に変換 SNDR を AC3 に変換 SNDT を AC3 に変換 SPX を AC3 に変換 TAK を AC3 に変換 TTA を AC3 に変換 TXW を AC3 に変換 U8 を AC3 に変換 VMS を AC3 に変換 VOC を AC3 に変換 VQF を AC3 に変換 W64 を AC3 に変換 WAV を AC3 に変換 Hot WAVPCM を AC3 に変換 WMA を AC3 に変換 WV を AC3 に変換 WVE を AC3 に変換 XI を AC3 に変換 XM を AC3 に変換

Frequently asked questions

What is a AC3 file?

AC3 (Dolby Digital) is the surround-sound audio of DVDs and Blu-rays — great for home theatre, unsupported by most phones and editors.

How do I convert AC3 files online?

Pick a target format from the "Convert AC3 to…" list below, drop your file and hit convert. Everything runs in your browser — no install, no upload, no watermark, no limits.

Is it safe to convert AC3 files here?

Yes. Every conversion is performed by your own device inside the browser — files never leave for a server, and the page keeps working even offline.

Which formats can AC3 convert to?

This page lists all 47 directions across documents, images, audio, video, spreadsheets and archives — each one is its own free converter page.