CAF vs FLAC
Um comparativo detalhado de Apple Core Audio e FLAC Audio — tamanho de arquivo, qualidade, compatibilidade e qual escolher de acordo com seu fluxo de trabalho.
Apple Core Audio
Audio FilesCAF (Core Audio Format) is Apple audio container supporting any codec.
Sobre os arquivos CAFFLAC Audio
Audio FilesFLAC is an open-source lossless audio codec that compresses audio to roughly 50-60% of its original size without any quality loss. It is the preferred format for audiophiles and music archival.
Sobre os arquivos FLACComparativo de vantagens
CAF Vantagens
- Unlimited file size (64-bit offsets).
- Can hold any Core Audio codec (PCM, ALAC, AAC, etc.).
- Native Apple ecosystem support.
- Rich annotation and metadata capabilities.
FLAC Vantagens
- Lossless — decoded audio is bit-exact identical to the source.
- 40-60% smaller than uncompressed WAV/AIFF.
- Free, patent-free, open-source reference implementation.
- Built-in error detection via MD5 checksums.
- Streaming-friendly — seek tables let you jump to any timestamp instantly.
Limitações
CAF Limitações
- macOS/iOS-centric — limited non-Apple tool support.
- Not a delivery format — exists for workflow, not consumption.
- Proprietary but documented.
- No broad industry adoption; WAV / BWF dominate interchange.
FLAC Limitações
- File sizes still large compared to lossy codecs (5-10× bigger than AAC for same audio).
- Not suitable for low-bandwidth scenarios like streaming on mobile data.
- Older MP3 players and car stereos may not decode FLAC.
- Slower to encode than lossy codecs.
Especificações técnicas
| Especificação | CAF | FLAC |
|---|---|---|
| MIME type | audio/x-caf | audio/flac |
| Extension | .caf | .flac |
| Container | Chunked, 64-bit sizes | — |
| Codecs | PCM, ALAC, AAC, IMA ADPCM, µ-law, Opus, FLAC | — |
| Max size | 2^64 bytes (effectively unlimited) | — |
| Standard | — | Open-source reference implementation (Xiph.Org) |
| Max bit depth | — | 32 bits per sample |
| Max sample rate | — | 655 350 Hz |
| Max channels | — | 8 |
Tamanhos típicos de arquivo
CAF
- iOS app sound effect (short) 10-200 KB
- 1 hour Logic Pro track (24-bit 48 kHz) ~620 MB
- Multi-track session (10 hours, 32 tracks) 100+ GB
FLAC
- 3-min song (CD quality) 20-30 MB
- Full album (10 tracks, CD) 250-400 MB
- 3-min song (hi-res 24-bit/96 kHz) 80-120 MB
- Live concert recording (24-bit) 2-10 GB
Pronto para converter?
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Perguntas frequentes
CAF (Apple Core Audio) is an audio file format used to store sound recordings — music, voice, podcasts, sound effects. The format defines how the audio samples are compressed (or stored raw), what bitrates are supported, and how metadata such as title, artist, album, and cover art is embedded. It is part of the audio files family.
CAF (Apple Core Audio) is an audio formatoo de arquivo used to store sound recordings — music, voice, podcasts, sound effects. The formato defines how the audio samples are comprimido (or stored raw), what bitrates are suportado, e how metadata como title, artist, album, e cover art is embedded. It is part of the audio arquivos family.
VLC, foobar2000, and the default media players on Windows and macOS handle CAF natively. On mobile, iOS Music and Android media apps vary in their support — popular formats work everywhere; niche ones may need a dedicated app. If playback fails on a device, converting to MP3 or AAC usually solves it.
VLC, foobar2000, e the default media players no Windows e macOS handle CAF natively. On mobile, iOS Music e Android media apps vary in their support — popular formatoos funcionar everywhere; niche ones may need a dedicated app. If playback fails em um device, convertendo to MP3 ou AAC Geralmente solves it.
Upload the CAF to KaijuConverter and pick MP3, WAV, FLAC, AAC, OGG, or any other target. Our FFmpeg pipeline decodes the audio and re-encodes to the target format at sensible default bitrates (VBR ~190 kbps for music, 96 kbps for speech). Metadata and cover art travel with the audio where both formats support them.
CAF can be lossy or lossless depending on the specific variant. Lossy variants (smaller files) discard some audio detail during compression in ways tuned to be inaudible; lossless variants preserve every sample exactly but produce larger files. For distribution, lossy at high bitrate is standard; for archival, lossless wins.