Convert AC3 to AAC

Convert AC3 files to AAC format online for free. No upload required, 100% private.

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AC3AACRe-encoding

Converting between two lossy formats (AC3 → AAC) involves re-encoding, which may cause additional quality loss. For best results, convert from the original source file when possible.

About AC3

AC3

Dolby Digital Audio Codec 3

AC3 (Dolby Digital) is a surround sound audio format commonly used in DVDs, Blu-rays, and digital television broadcasting.

Extension
.ac3
Developed By
Dolby Laboratories
Released
1991
Compression
Lossy

Typical Use Cases

DVD audioBlu-rayDigital TVHome theater

Pros

  • • Surround sound support
  • • Industry standard for video
  • • Good compression

Cons

  • • Lossy compression
  • • Requires licensing
  • • Not for music distribution

About AAC

AAC

Advanced Audio Coding

AAC is a lossy audio codec designed as the successor to MP3. It provides better sound quality at similar bitrates and is widely used in streaming services.

Extension
.aac
Developed By
ISO/IEC
Released
1997
Compression
Lossy

Typical Use Cases

YouTubeStreaming servicesDigital broadcastingMobile devices

Pros

  • • Better quality than MP3
  • • Efficient compression
  • • Wide platform support

Cons

  • • Patent encumbered
  • • Less universal than MP3
  • • Variable encoder quality