Blu-ray discs boast top-tier audio tracks, featuring TrueHD(Dolby Atmos), DTS HD Master, and Blu-ray PCM codecs, all aimed at delivering an exceptional auditory journey. These codecs maintain the pristine quality of the original audio sans compression, guaranteeing unparalleled clarity and fidelity. Leveraging lossless codecs, immersive surround sound innovations, and uncompressed PCM audio, Blu-ray soundtracks elevate the viewing experience to new heights. With rich and detailed soundscapes, viewers are fully immersed in the cinematic world of their beloved movies and TV shows.

Part 1: What is the "Audio Copy" feature used for?

Downloading Blu-ray or 4K UHD movies can be time-consuming due to their high video quality and large file sizes. Blu-ray movies typically range from 20GB to 40GB, while 4K UHD Blu-rays can exceed 50GB, with some reaching up to 80GB. These large files require significant time to download, especially over network connections, making the process inconvenient for users.

To reduce file size, focusing on compressing the video data is more effective since Blu-ray movies typically consist of 90% video data and only 10% audio data. Retaining the original audio data has minimal impact on file size, but preserving uncompressed audio ensures better sound quality. Therefore, prioritizing video compression while preserving the original audio allows for significant file size reduction without sacrificing audio quality.

Hence, many downloaded movies online undergo video compression, while retaining the original Blu-ray audio quality, such as TrueHD (Dolby Atmos), Blu-ray PCM, or DTS HD Master Audio. When converting these movies into Blu-ray or 4K UHD discs, the video encoding might not meet the passthrough mode's resolution requirements, necessitating transcoding. However, to preserve the high-quality audio, opting for "Audio Copy" is ideal. Unfortunately, most Blu-ray and 4K UHD authoring software lack support for "Audio Copy." Nonetheless, Yuhan Blu-ray Creator and Yuhan 4K UHD Creator offer full support for this feature.

Part 2: Best Blu-ray authoring software - Yuhan Blu-ray Creator

Yuhan Blu-ray Creator and Yuhan 4K UHD Creator stand out as robust authoring software for Blu-ray and 4K UHD content. They offer versatile functionality, including support for both passthrough and transcode modes. Notably, they excel in supporting "Audio Copy" even in transcode mode, preserving the original high-quality audio. Moreover, these software solutions boast extensive menu editing capabilities and a plethora of customization options for creating tailored menus. They seamlessly handle multiple audio tracks, subtitles, and offer flexible output options, including folders, ISOs, or direct disc burning.

Key Features:

• Support Audio Copy and can output DTS HD Master, TrueHD (Dolby Atmos), and Blu-ray PCM audio.
• 20+ menu templates are built-in, providing a lot of customization options.
• Three output options are available: Blu-ray folder, ISO, burn to disc.
• Support multiple audio tracks and multiple subtitles.
• Available for both Windows and Mac.

Part 3: How to use the "Audio Copy" feature of Yuhan Blu-ray Creator

Before we introduce it, we need to download and install Yuhan Blu-ray Creator. If your computer is Windows, please click the red button below to download the Windows version, and if your computer is Mac, click the blue button below to download the Mac version.

Step 1: Load video files

Load the video file and select the audio track and subtitles you need. Yuhan Blu-ray Creator supports almost all video formats, you can click the "Add Video" button to load them, or you can directly drag the files to the main interface of the software.

Note that "Audio Copy" can only support AC3, EAC3, DTS, DTS HD Master, TrueHD(Dolby Atmos), Blu-ray PCM audio.

Step 2: Set the video (optional)

After opening the video settings dialog, you can set the chapters, if your video already contains chapters, then Yuhan Blu-ray Creator can automatically import the chapters, you don't need to set them manually, you can also trim it, set the start time and end time, etc.

Step 3: Select a menu template and personalize it according to your preferences

With Yuhan Blu-ray Creator, you have a plethora of customization features at your disposal. Adjust the font size and color of the text, tweak the thumbnail images, and fine-tune the positioning of menu items using coordinates. Additionally, you can easily set background images, videos, and music for your menus, and even crop background music to fit your needs.

Step 4: Set "Audio Copy"

We open the software settings dialog box first.

On Mac:

On Windows:

Upon opening the software settings dialog box, it's essential to configure the "Blu-ray & UHD Processing Mode" to "transcode" and ensure that "Audio Copy" is enabled. Additionally, you have the option to customize video encoding and decoding settings. Yuhan Blu-ray Creator fully supports GPU-accelerated encoding and decoding, making tasks like HDR10 encoding effortless.

Step 5: Burning Setting

Yuhan Blu-ray Creator offers three output options: Blu-ray folder, ISO, and burning directly to disc. The discs produced by Yuhan Blu-ray Creator boast excellent compatibility with various players, including popular computer players like VLC Media Player, PowerDVD, and Kodi, as well as standalone home Blu-ray players from brands like Sony, Panasonic, Samsung, and Microsoft Xbox. You can expect seamless playback across a wide range of devices.

Step 6: Start making

Click the start button above and the production will begin, we just need to wait for it to complete the task.

Part 4: Conclusion

Important Note: When selecting "Audio Copy" for TrueHD (Dolby Atmos) audio, it's crucial to ensure that your video file includes an AC3 audio track. According to Blu-ray standards, a TrueHD audio track must be paired with an AC3 track within the same audio stream for proper playback compatibility on Blu-ray players. If your video file contains both TrueHD and AC3 audio tracks, Yuhan Blu-ray Creator and Yuhan 4K UHD Creator will seamlessly merge them into a single audio track automatically, eliminating the need for manual configuration.

Through the above explanation, I believe you must have some understanding of "Audio Copy".

If you want to know more about Yuhan Blu-ray Creator, please click: https://yuhanmedia.com/bd-creator
If you want to know more about Yuhan 4K UHD Creator, please click: https://yuhanmedia.com/uhd-creator

If you haven't tried it yet, click the button below to download a free trial.