Microsoft Confirms Windows 11 24H2 Ditches AC-3 Codec (Dolby Digital)

 

Introduction

Still, got those old audio files? You might not be able to play AC-3 music in native Windows apps anymore. Windows 11 24H2 will not include the famous AC-3 codec, also known as Dolby Digital. However, some devices might still have the old codec if the manufacturer includes it. This change does not affect third-party media players.

Why AC-3 Codec is Being Phased Out

Why is Microsoft removing the AC-3 codec? The short answer: it's outdated. The AC-3 codec, launched in the 90s, was a game-changer back then, but times have changed. Most streaming platforms and media companies have moved on to more modern codecs. Microsoft is just keeping up with the times.

What is the AC-3 Codec?

The AC-3 codec, or Dolby Digital, is a digital audio compression format. It was widely used in DVDs, digital television, and some streaming services. Known for delivering high-quality audio, it was a staple in home theaters. But as technology evolved, newer codecs have taken its place.

Impact on Native Windows Apps

When you install Windows 11 24H2 and try to play old audio encoded in the AC-3 codec, Media Player will not open it. This includes Windows 11’s modern Media Player and other built-in apps capable of playing audio. By default, Windows 11 24H2 will no longer include the AC-3 codec, commonly known as Dolby Digital.

AC-3 Codec and Windows Media Player

As first spotted by Windows Latest, Microsoft confirmed this change in a support document quietly published earlier this week. The document states that Windows will continue to support popular codecs such as FLAC or ALAC, but the “AC-3 codec is no longer included with Windows starting with version 24H2.”

Third-Party Media Player Alternatives

Don't fret if you have old AC-3 files. Third-party apps like VLC and MPV will still support the AC-3 codec. These open-source players are excellent alternatives and can handle a wide variety of formats, ensuring you can continue to enjoy your audio files.

Benefits of Using VLC and MPV

• Wide Format Support: Both players support numerous audio and video formats beyond AC-3.
• Free and Open-Source: No cost and constantly updated by the community.
• Cross-Platform: Available on various operating systems.

Devices That Might Still Include AC-3

Microsoft also confirmed that some devices may continue to ship with the AC-3 codec, but that’s only when the manufacturer chooses to preinstall it. For example, if an OEM is a close partner of Dolby, it may preinstall an AC-3 codec.

OEM Partnerships

• Close Partner Benefits: Devices from partners like Dolby may still include the AC-3 codec.
• Limited Availability: Not all devices will have this pre-installed.

Manual Addition of AC-3 Codec

When the AC-3 codec is added manually, you can still play files encoded with the AC-3 audio codec (Dolby Digital) in native apps. This process might involve downloading the codec from a reliable source and installing it yourself.

How to Add AC-3 Manually

1. Download the Codec: Find a reliable source for the AC-3 codec.
2. Install the Codec: Follow the installation instructions.
3. Configure Media Player: Ensure your media player recognizes the new codec.

Supported Audio Codecs in Windows 11 24H2

Microsoft says it’s still committed to supporting popular and modern codecs. Here’s a list of audio codecs that will continue to be supported:

• Advanced Audio Coding (AAC, M4A)
• Free Lossless Audio Codec (FLAC)
• MPEG-1, MPEG-2 audio (e.g., MP3, MP2)
• Apple Lossless Audio Codec (ALAC)
• Waveform (WAV)
• Windows Media Audio (WMA)
• Adaptive Multi-Rate (AMR)

Supported Video Codecs in Windows 11 24H2

In addition to audio codecs, Windows 11 24H2 supports a variety of video codecs:

• MPEG-4, H.264
• H.263
• VP8
• Motion JPEG
• DV
• VC-1
• Windows Media Video (WMV)
• 3GP, 3G2

Microsoft’s Codec Packs

The company continues to offer some codecs through paid “packs” in the Store. These packs include:

• MPEG-2 Video Extension
• HEVC Video Extension
• VP9 Video Extension
• AV1 Video Extension
• Web Media Extension

Benefits of Codec Packs

• Enhanced Compatibility: Ensures compatibility with various file formats.
• Regular Updates: Receive updates and improvements.
• Affordable: Usually available at a low cost.

Impact on Legacy Windows Versions

Microsoft also clarified that it won’t remove support for the AC-3 codec in older versions of Windows. If you’re using an older version, you won’t be affected by this change. This is good news for those not ready to upgrade to Windows 11 24H2.

Other Removals in Windows 11 24H2

In addition to the AC-3 codec, Windows 11 24H2 is set to remove several other legacy services:

• Cortana
• WordPad
• Steps Recorder

Legacy Services Phasing Out

• Cortana: The voice assistant that never quite took off.
• WordPad: A basic text editor that many have moved beyond.
• Steps Recorder: A tool for recording user steps, now redundant with modern screen recording tools.

Why Microsoft Made These Changes

These changes are part of Microsoft's broader strategy to modernize Windows. By phasing out outdated features and codecs, Microsoft aims to streamline the operating system, reduce bloat, and improve performance.

Streamlining Windows

• Improved Performance: Fewer legacy features mean faster updates and smoother performance.
• Focus on Modern Needs: Prioritizing features that users need and use today.

How to Prepare for the Update

Before the update rolls out, here are a few steps you can take:

1. Backup Important Files: Always good practice before any major update.
2. Check Codec Requirements: Identify any old files that might need the AC-3 codec.
3. Explore Alternatives: Consider third-party media players like VLC or MPV.
4. Update Apps: Ensure all your apps are up-to-date to minimize compatibility issues.

Conclusion

The removal of the AC-3 codec in Windows 11 24H2 marks the end of an era, but it also signals progress. As technology evolves, so must our tools and systems. While this change might inconvenience some users with older files, it’s a necessary step toward a more modern, efficient operating system. Embrace the future with open arms, and remember, there are always alternatives to keep your audio files playing.