Convert MP4 to FLAC
Extract lossless audio from MP4 videos and save it as FLAC files.
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* Files deleted after 24 hoursConvert files up to 100 MB for free
How to convert MP4 to FLAC online
Drag and drop your MP4 file, or click to select a file. Works with MP4 videos from various sources.
The tool extracts audio from your MP4 video and converts it to FLAC format. It preserves the original audio quality.
Wait for the conversion to finish. Most MP4 files take 10-30 seconds. A progress bar shows the status.
When conversion finishes, you can preview the FLAC file. Check the audio quality and file size before downloading.
Click Download to save the FLAC file to your device. Files are deleted after 24 hours.
About FLAC Format
FLAC (Free Lossless Audio Codec) is an audio compression format that provides lossless compression, meaning it preserves the original audio quality without any data loss. Unlike MP3 or AAC, FLAC doesn't discard any audio data during compression, making it ideal for archiving and professional audio work.
History and Development
FLAC was developed in the early 2000s as an open-source alternative to proprietary lossless formats. It was designed to provide lossless audio compression while remaining free and open. FLAC became popular among audiophiles and music enthusiasts who wanted to preserve audio quality while reducing file sizes. The format is now widely supported across many devices and platforms.
Technical Specifications
FLAC uses lossless compression, meaning no audio data is discarded during encoding. The format typically reduces file size by about 50-60% compared to uncompressed audio (like WAV), while maintaining 100% of the original audio quality. FLAC supports various sample rates and bit depths, making it suitable for both standard and high-resolution audio. The format is open-source and royalty-free.
Advantages
- Preserves original quality
Limitations
- Limited support on some older devices
Device Compatibility
FLAC support has improved in recent years. Modern Android phones, music players, and most desktop media software support FLAC natively. Apple now supports FLAC in newer versions of iOS and macOS. Some older devices and basic music players might still lack support, but for most modern equipment, FLAC compatibility isn't an issue.
Use Cases for MP4 to FLAC Conversion
Converting MP4 to FLAC is useful for anyone who wants to preserve audio quality. Common uses:
Audio Archiving
Extract audio from MP4 videos for archiving. FLAC preserves the original quality, making it ideal for long-term storage of important audio content.
Professional Audio Work
Extract audio for professional audio editing. FLAC files work well with professional audio software and maintain quality throughout the editing process.
Music Collections
Build high-quality music collections from video content. Extract music from music videos or concert recordings in lossless format.
Audio Restoration
Extract audio for restoration work. FLAC preserves all audio data, making it easier to restore or enhance audio quality.
Mastering and Production
Extract audio for mastering or production work. FLAC maintains the original quality needed for professional audio production.
Backup and Preservation
Create lossless backups from video content. Extract audio from important videos for backup or preservation purposes.
High-Quality Playback
Extract audio for high-quality playback. FLAC files provide the best possible audio quality for music listening.
Technical Details
Audio Codecs
MP4 videos typically use AAC or MP3 audio codecs, which are lossy formats. When extracting audio from MP4 to FLAC, the audio is decoded from the lossy format and then encoded into FLAC. Since FLAC is lossless, it preserves whatever quality was in the original MP4 audio, but it cannot restore quality that was lost during the original lossy compression.
Bitrate and File Size
FLAC doesn't use bitrate in the traditional sense, as it's a lossless format. File size depends on the complexity of the audio and the original quality. Typically, FLAC files are about 50-60% the size of uncompressed audio (like WAV), but 3-5 times larger than comparable MP3 files. Higher quality source audio results in larger FLAC files.
Format Limitations
FLAC files are larger than lossy formats like MP3 or AAC, which means they require more storage space. While FLAC support has improved, some older devices may not support it. FLAC is also not ideal for streaming due to larger file sizes. However, for archiving and professional work, FLAC provides the best quality preservation.
MP4 vs FLAC
Here's how MP4 compares to FLAC:
MP4 to FLAC conversion FAQ
Why would I convert MP4 audio to FLAC instead of MP3?
Are FLAC files much larger than other audio formats?
Do all devices and players support FLAC playback?
Is it worth extracting FLAC from standard MP4 videos?
Can I use FLAC files for professional audio production?
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