MPG files carry MPEG-1/MPEG-2 video with MP2 (MPEG Audio Layer 2) audio — the audio codec standard for DVDs, VCDs, and digital TV broadcasts at typical bitrates of 128-384 kbps. FLAC (Free Lossless Audio Codec) is an open-source lossless compression format that preserves every decoded sample while reducing file sizes by 30-50% compared to raw PCM. Converting MPG to FLAC extracts and decodes the MP2 audio, then encodes it losslessly in FLAC for archival or editing purposes.

FLAC is the universal standard for lossless audio archiving across all platforms. If you have valuable audio in MPG files — concert recordings, broadcast audio, DVD soundtracks — converting to FLAC preserves the decoded MP2 audio perfectly while providing efficient compression and full metadata support. FLAC is supported natively on Linux, Android, Windows, and macOS (since High Sierra).

FFmpeg decodes the MP2 audio stream from the MPG container to raw PCM samples, then encodes them using the FLAC encoder. FLAC compression levels range from 0 (fastest, largest) to 12 (slowest, smallest), with level 5 being the default sweet spot. Output files include Vorbis comment metadata. The FLAC encoding is completely lossless — the decoded PCM samples can be reconstructed bit-for-bit from the FLAC file.

Resolution: 1920x1080

Bitrate: 8-12 Mbps

H.264 recommended for fast processing

Resolution: 1080x1080

Bitrate: 3.5 Mbps

Square or 9:16 for Reels

Resolution: 1080x1920

Bitrate: 4 Mbps

9:16 vertical, under 60s ideal

Resolution: 1280x720

Bitrate: 5 Mbps

Under 140s, 512MB max

Resolution: 960x540

Bitrate: 2 Mbps

16MB limit for standard, 64MB for document

Resolution: 1280x720

Bitrate: 4 Mbps

8MB free, 50MB Nitro

No. FLAC preserves the decoded MP2 audio exactly as-is. It cannot restore detail lost during MP2 encoding. The benefit is lossless preservation for future use.

FLAC is typically 3-5x larger than the original MP2 track, since MP2 is lossy compression and FLAC is lossless. A 20 MB MP2 track might become 60-100 MB in FLAC.

Both are lossless. FLAC is roughly half the size of WAV and supports better metadata. WAV is simpler and has marginally wider legacy support. FLAC is generally the better archival choice.

iOS 11+ and macOS High Sierra+ support FLAC playback in the Files app and many third-party players. The Apple Music app does not import FLAC files directly.

Level 5 (default) for the best speed-to-size ratio. Level 8 saves about 5% more space at 3x slower encoding. Quality is identical at all levels.

Device	MPG	FLAC
Windows PC	Partial	Partial
macOS	Partial	Partial
iPhone/iPad	Partial	Partial
Android	Partial	Native
Linux	Partial	Native
Web Browser	No	No

Funktion	MPG	FLAC
Fulde navn	MPEG Video	Free Lossless Audio Codec
Filendelse	.mpg	.flac
Bedst til	Universal support	Lossless compression

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