FLAC vs Y4M
Ein detaillierter Vergleich von FLAC Audio und YUV4MPEG2 — Dateigröße, Qualität, Kompatibilität und welches je nach Workflow zu wählen ist.
FLAC 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.
Über FLAC-DateienYUV4MPEG2
Video FilesYUV4MPEG2 (Y4M) is a simple uncompressed video format that stores raw YUV pixel data with a minimal header. It is widely used as an intermediate format for video processing and quality benchmarking where no compression artifacts are acceptable.
Über Y4M-DateienVorteilsvergleich
FLAC Vorteile
- 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.
Y4M Vorteile
- Uncompressed raw YUV — codec benchmark truth.
- Dead-simple header.
- Universal codec development support.
Einschränkungen
FLAC Einschränkungen
- 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.
Y4M Einschränkungen
- Enormous file sizes.
- Development-only — not for consumption.
- No metadata beyond basic stream params.
Technische Spezifikationen
| Spezifikation | FLAC | Y4M |
|---|---|---|
| MIME type | audio/flac | video/x-yuv4mpeg2 |
| Extension | .flac | .y4m |
| Standard | Open-source reference implementation (Xiph.Org) | — |
| Max bit depth | 32 bits per sample | — |
| Max sample rate | 655 350 Hz | — |
| Max channels | 8 | — |
| Pixel format | — | YUV 4:2:0, 4:2:2, 4:4:4 |
| Header | — | ASCII single line |
Typische Dateigrößen
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
Y4M
- 10 sec 1080p Y4M ~600 MB
- 1 min 4K Y4M ~14 GB
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Häufig gestellte Fragen
FLAC (Free Lossless Audio Codec) is an open-source audio format that compresses audio without any quality loss. Developed by the Xiph.Org Foundation, it typically reduces file sizes by 40-50% compared to WAV while preserving bit-perfect audio.
FLAC (Free sem perdas Audio codec) is an open-source audio formato that compresses audio sem any quality loss. Developed pelo Xiph.Org Foundation, it tipicamente reduces tamanho do arquivos by 40-50% comparado a WAV while preserving bit-perfect audio.
FLAC files play in VLC, foobar2000, Winamp, and most modern music players. Streaming services like Tidal and Amazon Music HD use FLAC. Android supports it natively, and Apple devices support it via third-party apps.
FLAC arquivos reproduzir in VLC, foobar2000, Winamp, e most moderno music players. Streaming services like Tidal e Amazon Music HD usar FLAC. Android suporta it natively, e Apple devices support it via third-party apps.
Both are lossless with similar compression ratios. Use FLAC for universal compatibility and open-source support. Use ALAC if you are fully invested in the Apple ecosystem since iTunes and Apple Music handle ALAC natively.
Both are sem perdas com similar compressão ratios. usar FLAC para universal compatibilidade e open-source support. usar ALAC if you are fully invested no Apple ecosystem since iTunes e Apple Music handle ALAC natively.