WMV to AIFC Converter

How to Convert WMV to AIFC Online

1. Upload Your WMV File: Drag and drop or click "Add Files" to select WMV recordings — screen captures from older Windows Movie Maker projects, Camtasia exports, security camera archives, lecture recordings, or anything wrapped in the .wmv container. Batch is supported; drop in a folder and each clip extracts in parallel.
2. Pick Audio Codec or Quality Preset: The default writes 16-bit PCM big-endian inside an AIFC container — bit-identical to AIFF audio, just in the AIFF-C wrapper Apple introduced in 1991. Expand "Show All Options" to switch the Audio Codec (PCM S16 BE / S16 LE / S24 LE / S32 LE for lossless; FLAC, μ-law, A-law, ALAC for compressed inside AIFC), pick an Audio Quality Preset (Lowest → Highest), or set Constant Bitrate / Variable Bitrate / Target File Size for codecs that allow rate control.
3. Set Channels, Sample Rate, or Trim (Optional): Under Audio Channel choose Original / Mono / Stereo. Under Audio Sample Rate keep Original or pick 8000 / 16000 / 24000 / 44100 / 48000 Hz — 44.1 kHz matches CD-DA, 48 kHz matches most video post workflows. Under Trim, enter a start time and duration in seconds or HH:MM:SS.mmm format to grab a single passage.
4. Convert and Download: Click Convert. Each WMV's audio track is demuxed, transcoded into the AIFC container, and offered as a download — no sign-up, no watermark, no email.

Why Convert WMV to AIFC?

WMV is Microsoft's video container, first shipped as WMV 7 in 1999 alongside Windows Media Player 7. The audio track inside is almost always WMA (Windows Media Audio), a Microsoft codec that decodes natively only on Windows and a handful of cross-platform players. AIFC (Audio Interchange File Format Compressed, spec published August 1991) is Apple's compressed AIFF variant — it can hold uncompressed PCM (functionally identical to AIFF) or compressed payloads like μ-law, A-law, MACE 3:1/6:1, FLAC, or ALAC inside the same .aifc container. Common reasons to do this conversion:

• Mac and Logic Pro workflows — Logic Pro, GarageBand, and Final Cut import AIFC natively but treat WMA/WMV as a foreign format that needs a third-party component (Flip4Mac was discontinued and current macOS has no built-in WMA decoder). Pulling the audio into AIFC drops it onto a timeline with no codec gymnastics.
• Archiving voice or lecture recordings — Older Windows-recorded lectures, depositions, and Camtasia screencasts often ship as .wmv. PCM-in-AIFC gives you an Apple-native lossless master, while μ-law-in-AIFC at 8 kHz mono produces a small telephony-grade archive suitable for transcript pipelines.
• Pro Tools and broadcast hand-off — AIFC with PCM is one of Pro Tools' supported import formats out of the box. Sending raw WMA to a post-production house typically requires the engineer to bounce it themselves; pre-converting to AIFC removes the dependency.
• Cross-platform sample libraries — Apple Loops (a documented AIFF/AIFC extension used by GarageBand and Logic) attach pitch and tempo metadata to AIFC files. Converting source WMV audio into AIFC is the entry point if you want the result to live inside an Apple Loops library.
• Long-term compatibility hedge — Microsoft has steadily reduced WMV's first-party footprint: Windows Media Player Classic shipped with Windows 11 but the modernized Media Player app no longer plays WMV9 in every edition without the optional Web Media Extensions, and most modern browsers never decoded WMV at all. AIFC's PCM payload is a 30+ year stable format readable by FFmpeg, QuickTime, and every DAW released since the mid-1990s.
• Lossless extraction when possible — If you pick a PCM codec at the source sample rate and original channel count, the conversion writes a bit-for-bit copy of whatever audio data WMA decoded to — no double-lossy generation. Pick a compressed AIFC codec (μ-law, ALAC) only when you specifically want a smaller file.

WMV vs AIFC at a Glance

AIFC Codec Quick Guide

Want plain AIFF instead of compressed AIFC? Use WMV to AIFF. Want the smallest cross-platform option? Try WMV to MP3 or WMV to FLAC. Already have an AIFF file you want to repackage as AIFC? See AIFF to AIFC.

Frequently Asked Questions

Is AIFC the same as AIFF?

Not quite. AIFF (1988) carries only uncompressed PCM. AIFC, defined by Apple in the 1991 AIFF-C spec, is a superset — the same chunk-based container with an added compression-type field that lets it hold PCM (lossless, identical to AIFF) or compressed payloads like μ-law, A-law, MACE 3:1/6:1, FLAC, and ALAC. A PCM-in-AIFC file is functionally identical to AIFF audio just with a .aifc extension and a different compression-type marker. Pick PCM if you want lossless; pick μ-law or ALAC if you want a smaller file inside the same container.

Will the extracted audio be lossless?

It depends on the codec you pick for output. WMV files almost always contain WMA audio, which is itself a lossy codec — so the WMA stream gets decoded to PCM, then re-encoded into your AIFC codec choice. If you pick PCM S16/S24/S32 the AIFC file is a bit-perfect snapshot of what WMA decoded to, with no additional generation loss. If you pick μ-law, A-law, MP3, or AAC inside AIFC, you'll have a second lossy step on top of WMA's original compression — fine for speech archives, less ideal for music masters.

Why pick AIFC instead of just AIFF or WAV?

Three reasons. (1) Apple-native tools (Logic Pro, GarageBand, Final Cut, QuickTime) sometimes prefer the .aifc extension when emitting compressed audio inside an AIFF-style container — using the same extension keeps tooling happy. (2) AIFC supports compressed codecs in the same container, so you can produce a small lossy file with .aifc instead of switching to MP3 or M4A. (3) Apple Loops, the metadata extension used by GarageBand and Logic for tempo and key tagging, sits inside AIFF/AIFC structure — building loops generally starts from AIFC source.

Can I batch-extract audio from many WMV files at once?

Yes. Upload as many WMV files as you want, set the codec, sample rate, channels, and trim once, and apply to all. Each clip processes in parallel within your browser session and downloads individually or as a single ZIP. There's no quantity limit on batch jobs and no separate per-file fee.

What sample rate should I pick?

Match the destination. 44100 Hz is CD-DA standard and the safest choice for music. 48000 Hz is the broadcast/video post default — pick this if you're loading audio into Premiere, Final Cut, DaVinci Resolve, or Pro Tools alongside video. 16000 Hz is appropriate for ASR / transcription pipelines (Whisper, Otter, Rev.ai all accept it). 8000 Hz with μ-law is G.711 telephony quality. Keeping Original avoids any resample step — useful when you don't know the source rate yet.

Why does my WMV not play on Mac out of the box?

macOS dropped first-party WMV support years ago. Apple's Flip4Mac plug-in (the long-standing solution) was discontinued, and modern macOS QuickTime won't decode WMV9 / VC-1 video or WMA audio without third-party tools like VLC or a separate ffmpeg install. Converting the audio track to AIFC sidesteps the problem entirely — the resulting file plays in QuickTime, Finder Preview, Logic Pro, Final Cut, and Pro Tools with no extra software.

Can I trim the audio while converting?

Yes. Under Trim, enter a start time and duration. Both fields accept seconds (e.g. 12.5) or HH:MM:SS.mmm format (e.g. 00:01:30.500). Trimming first means the encoder only processes the portion you want, which is faster than converting the whole file and editing afterward. Use this for grabbing a single lecture clip, isolating a soundbite, or removing leader/trailer silence before sending to a DAW.

How large will the AIFC file be?

PCM-in-AIFC at 44.1 kHz / 16-bit / stereo runs about 10.1 MB per minute — the same as AIFF or uncompressed WAV. ALAC or FLAC inside AIFC typically lands at 40-60% of that depending on content (~4-6 MB per minute). μ-law or A-law at 8 kHz mono is roughly 0.48 MB per minute — speech-grade and small enough for email archives. If you need the smallest possible result, lossy AAC or MP3 inside AIFC at 128 kbps is about 0.96 MB per minute.

Can I convert AIFC back to WMV or another format?

Yes, but for most audio-only use cases there's no reason to go back to WMV — it was designed as a video container and ships as a video file with audio attached. If you want to compress the result further or change container, Compress AIFC trims size with the same codec, and the AIFC converter menu can write MP3, WAV, FLAC, M4A, or AAC. To go the other direction back to a Windows-native format, you'd typically pick WMA rather than rebuilding a WMV video.