Free online WV to AC3 converter

DVD authoring software, video editors, and AV receivers may require Dolby Digital AC3 instead of WavPack audio. Converting is also necessary when a player cannot decode WV or when audio must be added to a video workflow that accepts AC3.

What the WV format is

WV is the filename extension commonly used by WavPack, an open-source audio codec. WavPack supports lossless compression, which preserves the source exactly, and hybrid compression, which combines a lossy WV file with a correction file such as .wvc for lossless restoration. It is used for archival copies, music downloads, compressed CD images, and high-resolution audio collections.

WV files can contain stereo or multichannel audio, and their sample rate may not match the rates normally used by AC3. Some WavPack images are accompanied by a cue sheet that describes tracks; that structure is separate from the audio data and may not survive conversion to a standalone AC3 file.

What the AC3 format is

AC3, also called Dolby Digital, is a lossy perceptual audio codec developed by Dolby Laboratories. It supports mono, stereo, and surround configurations up to 5.1 channels and is widely accepted by DVD authoring tools, video editors, televisions, media players, and AV receivers.

AC3's main advantages are broad hardware compatibility, multichannel support, and lower data rates than uncompressed PCM. It is a delivery format rather than an archival format: encoding discards audio information, and a later conversion cannot restore it. A standalone .ac3 file normally contains the encoded audio stream, not album artwork, cue-sheet data, replay-gain information, or all source tags.

How to convert WV to AC3

Using 101convert.com

1. Open the WV-to-AC3 converter on 101convert.com.
2. Upload the .wv file and select AC3 as the output format.
3. Start the conversion, then download the resulting .ac3 file.

This option requires no software installation. Do not upload confidential audio if the service's file-handling terms do not meet your requirements.

Using FFmpeg

FFmpeg is suitable for local and batch conversion. Use a build with WavPack decoding and the native AC3 encoder. For a typical 5.1 video or DVD workflow, run:

ffmpeg -i input.wv -map 0:a:0 -ar 48000 -c:a ac3 -b:a 448k output.ac3

This selects the first audio stream, resamples it to 48 kHz, and encodes it at 448 kbps. For stereo material, a lower bitrate such as 192 or 256 kbps is often appropriate:

ffmpeg -i input.wv -map 0:a:0 -ar 48000 -c:a ac3 -b:a 192k output.ac3

AC3 commonly uses 32,000, 44,100, or 48,000 Hz. Resampling to 48 kHz is typical for video and DVD projects, but follow the destination specification. Inspect the source before choosing channels:

ffprobe input.wv

If the source is genuinely multichannel and its layout is suitable for 5.1, you can explicitly request six output channels:

ffmpeg -i input.wv -map 0:a:0 -ac 6 -ar 48000 -c:a ac3 -b:a 448k output.ac3

Do not use -ac 6 to make stereo audio surround sound; it only upmixes or remaps the existing channels and cannot create missing surround information.

Using desktop software

A graphical audio converter can perform the same operation if it includes both WavPack decoding and AC3 encoding. Import the WV file, choose Convert or Export, select AC3, set the sample rate, channel count, and bitrate required by the destination, and save the output. Verify that AC3 is an available encoder; changing .wv to .ac3 only changes the filename and does not convert the audio.

Quality and compatibility limits

• WV-to-AC3 conversion is lossy even when the source WV is lossless. Keep the original WV, and any associated .wvc correction file or cue sheet, for archival use.
• Common bitrates include 192 kbps for stereo and 384 or 448 kbps for 5.1, but DVD, broadcast, video, and receiver specifications may impose different limits.
• AC3 cannot preserve every WavPack feature, source tag, artwork item, track boundary, or hybrid correction relationship. Preserve those separately when they matter.
• Test the resulting file in the actual authoring program, player, or receiver. Some applications accept AC3 only inside a supported video or disc container rather than as a standalone raw stream.