Convert AAC to FLAC

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AAC vs FLAC Format Comparison

Aspect	AAC (Source Format)	FLAC (Target Format)
Format Overview	AAC Advanced Audio Coding AAC is a lossy digital audio compression format designed as the successor to MP3, offering better sound quality at similar bit rates. Widely used in streaming, digital music stores, and mobile devices. Lossy Compressed	FLAC Free Lossless Audio Codec FLAC is an open‑source, lossless audio compression format developed by the Xiph.Org Foundation. It preserves 100% of the original audio data while reducing file size, making it ideal for archival and high‑quality playback. Lossless Compressed
Technical Specifications	Sample Rates: 8kHz - 96kHz Bit Rate Modes: CBR, VBR Profiles: LC, HE, HEv2, LD, ELD Channels: mono (1), stereo (2), multichannel (up to 48) Extensions: .aac, .m4a, .mp4, .3gp	Sample Rates: 8kHz - 384kHz Bit Depths: 16, 24, 32-bit Compression Levels: 0 - 8 Channels: mono (1), stereo (2), multichannel (up to 8) Extensions: .flac
Advantages	High audio quality at the same bitrates as MP3 Supports VBR Low computational complexity for decoding Wide support on modern devices	Perfect reconstruction of original audio (lossless) Significant file‑size reduction compared to WAV/AIFF Fast decoding and reasonable encoding speed Embedded checksums for error detection Support for metadata tagging and cover art
Disadvantages	Lossy compression—some audio data is permanently discarded Limited compatibility with older devices Commercial licensing may apply	Larger files than lossy formats (MP3, AAC, Opus) Less suited for streaming over low‑bandwidth connections Limited hardware support on older portable devices
Compatibility	Excellent: iOS, Spotify, YouTube, Modern Android devices Good: VLC, Windows Media Player, Modern browsers Limited: Older car stereos, Legacy audio equipment	Excellent: VLC, Foobar2000, JRiver Media Center, Most Linux distributions Good: iTunes (with plugin), Windows Media Player (with plugin), Modern browsers via libraries Limited: Car audio systems without FLAC support, Legacy portable players
Common Uses	Music streaming (Spotify, Apple Music) Digital downloads (iTunes Store) Podcasts and audiobooks Audio tracks for video files	Archival of master recordings High‑resolution audio downloads Digital music libraries Audiophile listening setups

Why Convert AAC to FLAC?

Converting from AAC to FLAC produces a lossless output preserving every detail of the original recording. While AAC offers smaller file sizes for streaming, FLAC ensures archival-quality audio perfect for editing, mastering, and high‑fidelity listening.