Step 1: Transfer your WMV files using the button above or by slide and deposit.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Retrieve your converted AAC files.
WMV to AAC Conversion FAQ
How do I extract the audio from my WMV file as AAC?
+
Upload the WMV file and the converter demuxes the audio stream, then transcodes it to AAC. There is no second video pass — the visual track is discarded immediately so extraction is much faster than a full re-encode. WMV is Windows Media Video, Microsoft’s ASF-based format from the Windows XP era. AAC is Advanced Audio Coding, standardised in 1997 as MPEG-2 Part 7 and designed explicitly to replace MP3.
Is converting WMV to AAC a second round of lossy compression?
+
Yes, and it is worth planning around. Both formats are lossy, so the AAC encoder is working from audio that has already been through one psychoacoustic pass, and its own decisions compound the first set. At 192 kbps or above the result is still transparent for most listening. If you have a lossless master anywhere, encoding the AAC from that instead avoids the double pass entirely. WMV carries Microsoft’s own VC-1 or WMV3 video with WMA audio — codecs almost nothing outside Windows decodes natively. AAC is lossy but more efficient than MP3, and it handles up to 48 channels natively rather than being bolted onto a stereo design.
Can I tag the AAC with artist and album information?
+
Yes, and it is a genuine gain over WMV, which has nowhere dependable to store any of it. AAC carries title, artist, album, year, track number and embedded cover art in the container itself, so a music library files it correctly without a manual pass. AAC sounds noticeably better than MP3 below 128 kbps and is the default audio track in MP4, YouTube, Apple Music and broadcast.
Why will some of my WMV files not convert?
+
DRM. A subset of WMV files are encrypted by the store or the software that issued them, and encrypted audio cannot be decoded by any converter. Anything you ripped yourself, recorded, or bought without protection converts normally; a licensed purchase will not. WMV is effectively a dead end: macOS, iOS, Android and every browser need third-party decoders, and some WMV files carry DRM that cannot be converted at all.
What audio bitrate does the extracted AAC use?
+
Default bitrate for lossy AAC is 192 kbps, which is transparent for music. You can override to 320 kbps (audiophile) or 96-128 kbps (voice / podcast / smaller file). The bitrate dropdown is exposed in the advanced options before you click convert.
Will I lose audio quality going from WMV to AAC?
+
If AAC is lossless (WAV, FLAC), every sample is preserved exactly. If AAC is lossy (MP3, AAC, OGG, Opus), the AAC codec recompresses the source audio — at 192 kbps the result is transparent for almost all content. Going lossy → lossless never recovers detail already discarded.
Does the AAC audio keep the original sample rate?
+
By default yes — 48 kHz audio in your WMV stays 48 kHz in the AAC output. For CD-burning or legacy player compatibility you can downsample to 44.1 kHz via the sample-rate dropdown; the resampler is high-quality SoX-grade.
Can I extract audio from multiple WMV files to AAC in one batch?
+
Yes — drop a folder of WMV files and we extract audio in parallel. Premium users get more parallel workers; on a 50-file batch this is the difference between a couple of minutes and ten-plus minutes.
Will the AAC be tagged with title / artist / album metadata?
+
If the WMV carries chapter or stream metadata, we copy title / artist / album fields into the AAC container. If not, the AAC comes out untagged — use a tag editor (Mp3tag, Picard) post-export for richer tagging.
How long does extracting AAC audio from a 1-hour WMV take?
+
Audio demux + encode is fast — typically 5 to 15% of the source duration. A 1-hour WMV → AAC finishes in roughly 3 to 9 minutes on the standard pipeline; Premium parallelism cuts this further for batch jobs.
Can I extract just a section of the WMV audio as AAC?
+
Not in this tool directly — extract the full audio as AAC, then use /audio-trim/ or /audio-cutter/ to clip the section. The two-step path is usually faster than a combined operation and gives you precise waveform-level control.
Is my WMV file private during the audio extraction?
+
Yes — same privacy model as every conversion: isolated workers, no human review, automatic deletion within minutes of completion. The detailed retention window is on /privacy/.
