Meridian Lossless Packing


Meridian Lossless Packing (MLP) is a lossless compression technique primarily used in the audio industry. Developed by Meridian Audio, it aims to reduce file size without compromising sound quality, enabling efficient storage and transmission. MLP is the standard compression method for Dolby TrueHD, a high-quality audio format commonly found in Blu-ray Discs and other digital media.

Key Takeaways

  1. Meridian Lossless Packing (MLP) is a lossless data compression technique, primarily used for digital audio signals, ensuring high-quality playback without compromising the original audio quality.
  2. MLP is the standard codec for DVD-Audio, a high-resolution audio format designed to surpass the audio quality of traditional audio CDs.
  3. Meridian Lossless Packing is also used in Dolby TrueHD audio format, which is featured in Blu-ray Discs, providing enhanced audio quality for home theater systems.


Meridian Lossless Packing, or MLP, is an important technology term because it refers to a lossless compression technique that plays a vital role in delivering high-quality audio without significant loss of data.

Essential for applications like DVD-Audio and Blu-ray Discs, MLP ensures that audio files remain compact and manageable while preserving the original sound quality.

As consumers increasingly demand top-tier audio experiences, such technologies enable content creators and providers to optimize and maintain the integrity of audio content.

Moreover, utilizing MLP technology contributes to efficient storage and bandwidth usage, positioning it as a valuable tool for audio professionals and enthusiasts alike.


Meridian Lossless Packing (MLP) is a technology primarily designed to serve the purpose of compressing audio data without sacrificing its original quality. This plays a crucial role in maintaining and delivering a rich and immersive audio experience in various applications within the realm of entertainment and communication.

In order to preserve high-quality audio fidelity, MLP is used in various situations, such as digital music, streaming services, and home theater systems, where the efficient utilization of bandwidth is essential. Since the compression is lossless, the original audio content can be recovered in its entirety during playback, ensuring that the listener receives the intended auditory experience as crafted by the creators.

Moreover, MLP is often associated with its implementation in DVD-Audio format, a high-fidelity audio format that provides superior sound quality in comparison to the standard audio CDs. By employing MLP in the DVD-Audio format, larger files and higher resolution audio can be stored and transmitted without consuming an excessive amount of storage space and bandwidth.

This enables the users to enjoy surround sound and high-resolution audio that matches the expectations of audiophiles and professionals alike. Overall, Meridian Lossless Packing serves as a powerful tool in delivering authentic and uncompromised audio experiences, preserving the intricate details and nuances that make a significant difference in how we perceive and connect with sound.

Examples of Meridian Lossless Packing

Meridian Lossless Packing (MLP) is a lossless compression algorithm primarily for audio data, used in various applications and technologies. Here are three real-world examples involving MLP:

DVD-Audio: One of the primary uses of Meridian Lossless Packing is in DVD-Audio, which offers superior audio quality compared to traditional CDs. With MLP, DVD-Audio is capable of delivering high-resolution stereo or multi-channel audio with perfect bit-for-bit accuracy, ensuring optimum sound quality for listeners.

Dolby TrueHD: MLP is also the basis for Dolby TrueHD, a high-definition audio format found on Blu-ray discs. Dolby TrueHD employs MLP to deliver lossless, studio-quality audio tracks, providing a more immersive and true-to-life audio experience in movies and home theater systems.

High-resolution audio streaming services: Some high-resolution audio streaming services, like TIDAL, use Meridian’s MQA (Master Quality Authenticated) technology. MQA makes use of MLP for compressing audio files without losing their original quality. This enables subscribers to listen to music as the artists and recording engineers intended, with a sound quality that matches or surpasses that of a CD.

FAQ – Meridian Lossless Packing

What is Meridian Lossless Packing?

Meridian Lossless Packing (MLP) is an audio compression algorithm developed by Meridian Audio, Ltd. It is designed to provide lossless compression, which means that the original audio signal can be perfectly reconstructed from the compressed data. MLP is widely used in high-resolution audio formats like DVD-Audio and Blu-ray.

Why use Meridian Lossless Packing?

Using MLP for audio compression ensures the preservation of the original audio quality. Since it compresses the audio file without any loss in quality, it is preferred for archiving high-resolution audio content or delivering high-quality audio in different mediums, such as DVD-Audio and Blu-ray discs.

How does Meridian Lossless Packing work?

MLP operates by analyzing an audio signal and looking for redundancies and patterns in the data. It then applies lossless compression techniques, like entropy coding and linear prediction, to reduce the size of the audio file without losing any information. The compressed data can be decoded perfectly, ensuring the original audio quality is maintained when played back.

How does Meridian Lossless Packing differ from other lossless audio codecs?

While there are other lossless audio codecs, such as FLAC and ALAC, MLP stands out for its specific optimization for high-resolution multichannel audio formats like DVD-Audio and Blu-ray. Additionally, MLP is capable of handling very complex audio signals with a high degree of precision, leading to efficient compression without any loss in quality.

What devices support Meridian Lossless Packing?

MLP is supported by a range of devices, including DVD-Audio players, Blu-ray players, and various home theater systems. Some media players and software may also support MLP through added plug-ins or codecs, allowing playback of MLP-encoded audio files on your computer or other devices.

Related Technology Terms

  • Lossless Audio Compression
  • High-Fidelity Sound Quality
  • Dolby TrueHD
  • MLP Decoder
  • Advanced Resolution

Sources for More Information

  • Meridian Audio – The official website of Meridian Audio, the company that originated the Meridian Lossless Packing technology.
  • Wikipedia – The related Wikipedia entry provides an overview of Meridian Lossless Packing and its applications.
  • Dolby Laboratories – As MLP is often used in Dolby TrueHD audio encoding, the official Dolby website can offer relevant information about its implementation in their technologies.
  • Hydrogenaudio Forums – A discussion forum where users can discuss and share their knowledge about various audio technologies, including Meridian Lossless Packing.

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