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AAC vs MPEG

AAC vs MPEG

Una comparativa detallada de AAC Audio y MPEG Video — tamaño de archivo, calidad, compatibilidad y cuál elegir según tu flujo de trabajo.

AAC

AAC Audio

Audio Files

AAC is a lossy audio codec that delivers better sound quality than MP3 at similar bitrates. It is the default audio format for Apple Music, YouTube, and most streaming services.

Sobre los archivos AAC
MPEG

MPEG Video

Video Files

MPEG is an early digital video standard that formed the basis for later formats like MP4. MPEG-1 and MPEG-2 files are common in DVD rips and older digital video archives.

Sobre los archivos MPEG

Comparativa de ventajas

AAC Ventajas

  • Better quality than MP3 at equal bitrate — the industry standard since 2000s.
  • Universally supported on every smartphone, OS, and browser.
  • Efficient on battery thanks to widespread hardware decoding.
  • Scales from 8 kbps speech (HE-AACv2) to lossy-transparent 320 kbps.
  • Five-channel + LFE surround support out of the box.

MPEG Ventajas

  • Universal playback on every OS, player, and DVD/TV hardware since 1995.
  • Proven, well-documented — three decades of spec refinement and tooling.
  • Best-in-class for broadcast — Transport Streams carry multiple channels, error correction, and PSI/SI metadata.
  • Low CPU decoding — even 1990s hardware can handle MPEG-1/2.

Limitaciones

AAC Limitaciones

  • Patent-encumbered — encoders have licensing fees, which is why open alternatives (Opus, Vorbis) exist.
  • Slightly more complex to encode than MP3.
  • Raw .aac streams carry no seek index — tooling often prefers M4A/MP4 containers.
  • Lossy — not suitable for archival or studio production.

MPEG Limitaciones

  • Aging codec — MPEG-2 is 2-3× larger than H.264 at equivalent quality.
  • Patent licensing still active for some MPEG-2 patents in certain territories.
  • Consumer devices rarely default to .mpg — everything ships as .mp4 today.
  • No modern features (HDR, HEVC, AV1) inside classic MPEG Program Streams.

Especificaciones técnicas

Especificación AAC MPEG
MIME type audio/aac
Extensions .aac, .m4a, .mp4 (container-dependent) .mpeg, .mpg, .mpe, .m1v, .m2v
Standard ISO/IEC 14496-3
Variants AAC-LC, HE-AAC, HE-AACv2, AAC-LD, xHE-AAC
Sample rates 8-96 kHz
MIME types video/mpeg, video/x-mpeg
Containers MPEG Program Stream (PS), Transport Stream (TS)
Standards ISO/IEC 11172 (MPEG-1), ISO/IEC 13818 (MPEG-2)
Typical use DVD, DVB, ATSC broadcasts

Tamaños típicos de archivo

AAC

  • Speech podcast (64 kbps) 1 MB/min
  • 3-min music track (128 kbps) 3 MB
  • 3-min music track (256 kbps) 6 MB
  • Broadcast-quality 5.1 (384 kbps) 9 MB for 3 min

MPEG

  • 2-min VCD clip (MPEG-1) 20-25 MB
  • 2-hour DVD movie (MPEG-2) 4-7 GB
  • 1 channel HDTV broadcast (1 hour) 6-10 GB

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Preguntas frecuentes

AAC (Advanced Audio Coding) is a lossy audio format standardized by ISO as the successor to MP3. It delivers better sound quality than MP3 at equivalent bitrates and is the default audio format for Apple products, YouTube, and most streaming services.

AAC (Advanced Audio Coding) is a com perdas audio formato padrãoized by ISO como o successor to MP3. It delivers better sound quality than MP3 at equivalent bitrates e is the default audio formato para Apple products, YouTube, e most streaming services.

AAC files play in iTunes, Apple Music, VLC, Windows Media Player, and all modern web browsers. AAC is natively supported on iOS, Android, macOS, and Windows.

AAC arquivos reproduzir in iTunes, Apple Music, VLC, Windows Media Player, e all moderno web browsers. AAC is natively suportado no iOS, Android, macOS, e Windows.

AAC is technically superior, offering better quality at the same bitrate. Use AAC for Apple ecosystem and modern devices. Use MP3 only when you need compatibility with very old hardware like legacy car stereos or basic MP3 players.

AAC is technically superior, offering better quality at the same bitrate. usar AAC para Apple ecosystem e dispositivos modernoos. usar MP3 only when you need compatibilidade com very old hardware like legacy car stereos ou basic MP3 players.

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