Convert AIFF-C Compressed Audio (.aifc) to Flash Video (.flv) online for free. Fast, secure audio conversion with no watermarks or registration.
Upload your .aifc 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 .flv file when it's ready.
AIFC (AIFF-C) is Apple's legacy compressed audio format from the late 1980s, designed for Mac OS and NeXTSTEP with support for IMA ADPCM, MACE 3:1/6:1, G.711, and uncompressed PCM. FLV (Flash Video) is Adobe's multimedia container from the Flash Player era, widely used for web video delivery from 2005 to 2017 before HTML5 video made it obsolete.
Converting AIFC to FLV produces an audio-only FLV file — the audio stream is encoded as MP3 or AAC and wrapped in the FLV container without a video track. This conversion is relevant for legacy Flash-based systems, older streaming servers, and archived web content infrastructure that specifically requires FLV input.
Some legacy streaming servers and content management systems still require FLV format for audio and video content. RTMP-based streaming infrastructure, older Adobe Media Server installations, and archived Flash-based websites may only accept FLV uploads. AIFC cannot be used in any of these systems.
While Flash Player reached end-of-life in December 2020, significant legacy infrastructure remains operational in enterprise environments, educational institutions, and archived web projects. Converting AIFC to FLV bridges two legacy formats — moving Apple's obsolete audio into Adobe's legacy delivery container.
FFmpeg decodes the AIFC container to raw PCM samples, then encodes the audio as MP3 (via libmp3lame) or AAC-LC (via the native AAC encoder). The encoded audio stream is muxed into an FLV container following Adobe's FLV specification. No video track is included. FLV supports MP3, AAC, and Speex audio codecs; MP3 at 128-320 kbps is the most universally compatible choice for legacy Flash infrastructure.
Audio quality depends on the chosen codec and bitrate. MP3 at 320 kbps or AAC at 256 kbps from an uncompressed AIFC PCM source will produce excellent results. MACE-compressed AIFC sources are already degraded before the FLV encoding step. The FLV container itself imposes no quality penalty — it is purely a wrapper.
| Device | AIFC | FLV |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
AIFC to FLV is a niche conversion bridging two legacy formats. Use it only when legacy Flash infrastructure specifically requires FLV input, and prefer MP4 or WebM for any modern use case.
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| No |
| Funktion | AIFC | FLV |
|---|---|---|
| Fulde navn | AIFF-C Compressed Audio | Flash Video |
| Filendelse | .aifc | .flv |
| Bedst til | Compressed AIFF | Small file size |