WMV to AIFF Converter

How to Convert WMV to AIF Online

1. Upload Your WMV File: Drag and drop your .wmv clip onto the converter or click "+ Add Files" to browse. Batch uploads are supported, so you can extract audio from several WMV recordings in one pass.
2. Pick Audio Channel and Sample Rate: Open Advanced Options. Leave Audio Channel on Original to preserve the source mix, or force Mono for voice recordings and Stereo for music. Leave Audio Sample Rate on Original to keep the file's native rate, or pick 44100 Hz for CD-quality output, 48000 Hz for video-aligned audio, or 96000 Hz for high-resolution mastering.
3. Trim the Audio (Optional): Use the Trim control to set a start time and duration in HH:MM:SS.mmm so you only extract the section you need — useful when a long WMV interview or webinar only has a short usable segment.
4. Convert and Download: Click Convert. Each WMV is decoded, the audio track is re-encoded to AIFF/PCM, and the result is saved with a .aif extension. Files process in your browser session — no sign-up, no watermark.

Why Convert WMV to AIF?

WMV (Windows Media Video, introduced by Microsoft in 1999) is an ASF-container format that pairs video with a Windows Media Audio (WMA) track. AIFF (Audio Interchange File Format, developed by Apple in 1988 and based on Electronic Arts' IFF) stores uncompressed PCM audio — lossless, big-endian, and natively understood by macOS, Logic Pro, Final Cut Pro, and Pro Tools. Converting WMV to .aif strips the video, decodes the WMA audio once, and writes it out as PCM so the file behaves like a first-class audio asset on Apple-centric workflows.

• Pull a usable audio bed off a Windows-era project recording. Old Microsoft Live Meeting, Camtasia, and Windows Movie Maker exports save as WMV. Converting to AIF gives you an editable PCM track you can drop into a DAW without the WMA codec dance.
• Hand audio to a Mac-based editor. Logic Pro, GarageBand, and Final Cut Pro treat .aif as a native asset. WMA support on macOS historically required Flip4Mac or other plugins, most of which are no longer maintained — converting up front avoids the codec hunt.
• Archive lossless from a lossy WMA source. WMA is lossy, so you cannot "un-lose" audio detail by converting to AIFF — but a PCM .aif is a stable, codec-free archive copy that will still open in 2040 without depending on Windows Media licensing.
• Prepare clips for sample-accurate editing. PCM in AIFF means every audio sample is addressable directly. That makes precise cuts, crossfades, and timestamped subtitle alignment easier than working from a compressed WMA stream.
• Burn a CD or send to a CD-mastering house. CD audio is 16-bit PCM at 44.1 kHz — exactly what AIFF stores. Many mastering studios still ask for 44.1 kHz / 16-bit or 24-bit AIFF as the delivery format.
• Send to a transcription service that rejects WMV. Most professional transcription pipelines accept WAV/AIFF and reject video containers. Converting the audio out front is faster than asking the vendor to re-encode.

WMV vs AIF — Format Comparison

AIF / AIFF / AIFC — Which Extension to Use

.aif, .aiff, and .aifc all describe the same Audio Interchange File Format from Apple. The naming difference is historical: DOS limited file extensions to three characters, so Windows tools settled on .aif, while macOS uses the four-character .aiff. AIFC is the compressed variant.

Both .aif and .aiff are bit-for-bit identical inside. If you need the Mac-style four-character name, use WMV to AIFF instead.

Sample Rate and Bit Depth Quick Guide

At 24-bit depth, multiply each row by 1.5. Going above the source WMA's effective bandwidth (typically 22 kHz at 128 kbps) does not recover detail — it only makes a larger file.

Frequently Asked Questions

Why is my AIF so much larger than the original WMV?

Because WMV's audio track was WMA-compressed at roughly 128-192 kbps, while AIFF stores raw PCM at about 1,411 kbps for 16-bit 44.1 kHz stereo. Expect the AIF to be roughly 7-10x the size of the original audio data inside the WMV. That extra size is not "more audio" — it is the same audio stored without compression.

Will converting WMA inside the WMV to AIF improve audio quality?

No. WMA is lossy, so audio detail discarded during the original encode cannot be recovered. The AIF is lossless from this point forward, but the ceiling is set by the WMA source. AIFF is the right format for preserving what you have, not for improving it.

What's the difference between .aif and .aiff — should I pick one over the other?

They are identical inside. Windows tools historically wrote .aif because of the DOS 8.3 filename limit; macOS uses .aiff because it never had that limit. Pick .aif if your downstream tooling is on Windows or a CMS that rejects four-character extensions; pick .aiff if you are handing files to a Mac-based editor or studio.

Can I keep the original WMA audio bitrate when converting to AIF?

No, and you would not want to. AIFF only stores PCM, not WMA. The converter decodes the compressed WMA stream to raw samples and writes them as PCM in the .aif file. You can choose the PCM sample rate (e.g., 44.1 kHz) and channel count (mono/stereo), but the bitrate is dictated by the PCM math — it is not a quality dial.

What sample rate and bit depth should I pick for a podcast or interview?

44100 Hz, 16-bit, stereo (or mono if the source is single-mic). That matches CD quality and is the default for most podcast hosts. Going higher (48 kHz or 96 kHz) inflates file size without adding audible detail when the source is a WMA-compressed interview.

Will the resulting AIF play on Windows Media Player?

Yes. Windows has shipped AIFF support natively since Windows 7. Windows Media Player, Groove Music, and most third-party Windows audio apps open .aif files directly. On macOS, every Apple audio app — QuickTime, Music, Logic Pro, GarageBand, Final Cut Pro — opens them without conversion.

Can I extract audio from a batch of WMV files at once?

Yes. Upload multiple WMVs and they convert in the same browser session using the same Audio Channel, Sample Rate, and Trim settings. If you need different settings per file, run them in separate batches.

How do I trim out just one segment of a long WMV before converting?

Use the Trim control in Advanced Options. Enter a start time in HH:MM:SS.mmm and a duration in the same format. Only the selected window is decoded and written to the AIF. For more involved editing after conversion, see Trim AIF.

What if I need MP3, WAV, or FLAC instead of AIF?

For a smaller lossy file use WMV to MP3. For Windows-native lossless choose WMV to WAV — WAV is little-endian PCM, AIFF is big-endian PCM, but the audio is otherwise equivalent. For lossless at roughly half the size of PCM, try WMV to FLAC.