FLAC vs MP4
Ein detaillierter Vergleich von FLAC Audio und MP4 Video — 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-DateienMP4 Video
Video FilesMP4 is the most universally supported video container format. It typically uses H.264 or H.265 video codecs with AAC audio, providing an excellent balance of quality and file size across all devices and platforms.
Über MP4-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.
MP4 Vorteile
- Universal playback — every browser, phone, TV, game console, and editing suite reads MP4.
- Supports modern codecs (H.264, H.265, AV1) with no container changes.
- Progressive streaming works with the "moov atom" at the start of the file.
- Carries subtitles, chapters, multiple audio tracks, and embedded metadata.
- ISO-standardized (ISO/IEC 14496-14) and patent-licensable via MPEG LA.
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.
MP4 Einschränkungen
- Codec licensing (H.264, H.265) carries royalty costs for commercial use.
- Streaming requires the moov atom at the start — a misplaced atom breaks web playback.
- Not ideal for lossless or professional editing workflows (use ProRes or DNxHD instead).
- Editing an MP4 almost always re-encodes, degrading quality.
Technische Spezifikationen
| Spezifikation | FLAC | MP4 |
|---|---|---|
| MIME type | audio/flac | video/mp4 |
| Extension | .flac | — |
| Standard | Open-source reference implementation (Xiph.Org) | — |
| Max bit depth | 32 bits per sample | — |
| Max sample rate | 655 350 Hz | — |
| Max channels | 8 | — |
| Container | — | ISO Base Media File Format (ISO/IEC 14496-12) |
| Common video codecs | — | H.264 (AVC), H.265 (HEVC), AV1, VP9 |
| Common audio codecs | — | AAC, MP3, FLAC, Opus |
| Max file size | — | Practically ~16 TB; 2^63 bytes theoretical |
| Streaming | — | Supported with faststart (moov atom at front) |
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
MP4
- Smartphone video (1080p, 1 min) 60–120 MB
- 4K video (1 min, H.265) 200–400 MB
- Streamed movie (90 min, H.264) 1–4 GB
- Social clip (15s, H.264, 720p) 3–8 MB
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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.