Convert Shockwave Flash (.swf) to Free Lossless Audio Codec (.flac) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .swf file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .flac file when it's ready.
SWF (Shockwave Flash) files contain embedded audio that became stranded when Adobe discontinued Flash Player in December 2020. FLAC (Free Lossless Audio Codec) is an open-source lossless audio format that compresses audio to approximately 50-60% of its uncompressed size while preserving every audio sample bit-perfectly. Converting SWF to FLAC extracts the audio from Flash files and stores it in the most widely supported open lossless format.
FLAC is the standard lossless format for audio archival, audiophile playback, and professional audio workflows on non-Apple platforms. For preserving Flash audio content with maximum quality and universal compatibility, FLAC is the optimal choice.
FLAC provides lossless audio preservation with efficient compression, making it the best choice for archiving Flash audio when both quality and storage efficiency matter. Unlike AIFF or WAV, FLAC files are roughly half the size with bit-identical audio quality. Unlike AAC or MP3, FLAC preserves every audio sample without lossy compression artifacts.
FLAC is natively supported on Android, Linux, Windows (via built-in codecs), and most modern audio players. It has become the de facto standard for lossless audio distribution and archival. For Flash audio content that represents irreplaceable creative work or historical recordings, FLAC preservation ensures no further quality degradation occurs.
The conversion engine uses FFmpeg to demux the SWF container, decode the embedded audio (MP3, ADPCM, Nellymoser, or Speex), and re-encode using the FLAC encoder at compression level 5 (balanced speed and size). Output uses 16-bit samples at the source sample rate. FLAC supports Vorbis comment metadata tags for title, artist, and album information. The output is a standard .flac file playable on all platforms.
FLAC is mathematically lossless — the output audio is bit-identical to the decoded PCM from the SWF source. The quality ceiling is determined by the original Flash audio encoding. Flash MP3 at 128 kbps decoded to FLAC preserves those exact decoded samples without any additional loss. FLAC file sizes are approximately 50-60% of equivalent WAV/AIFF files.
| Device | SWF | FLAC |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Native |
| Linux | Partial | Native |
| Web Browser | No |
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
SWF to FLAC conversion preserves Flash audio in the standard open lossless format, combining bit-perfect quality with efficient compression and universal platform support.
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| No |
8MB free, 50MB Nitro
Enhver browser, enhver enhed
| Funktion | SWF | FLAC |
|---|---|---|
| Fulde navn | Shockwave Flash | Free Lossless Audio Codec |
| Filendelse | .swf | .flac |
| Bedst til | Flash format | Lossless compression |