Here's an article discussing the differences between H.264 and H.265 in the context of HDMI:

Understanding the Differences: HDMI's H.264 and H.265 Technologies

In the world of digital video, two encoding standards have become the backbone for high-definition content transmission over HDMI: H.264 and H.265. While they may seem similar at first glance, these two formats have distinct differences that impact their performance, efficiency, and compatibility.

H.264: The Established Standard
H.264, also known as Advanced Video Coding (AVC), has been the industry standard for over a decade. Introduced in 2004, H.264 was a significant leap forward in video compression technology. It allows for high-quality video transmission while significantly reducing the file size without a noticeable loss in quality. This efficiency made H.264 the go-to codec for everything from Blu-ray discs to online video streaming platforms.

Advantages of H.264:

Widespread Compatibility: H.264 is supported by nearly all hardware and software players, making it the most accessible codec for users.
Balance of Quality and Compression: It offers a good balance between compression and video quality, suitable for various applications.
Lower Computational Power: H.264 can be decoded with less powerful hardware, making it ideal for devices with limited processing capabilities.
H.265: The Next Generation Codec
H.265, or High-Efficiency Video Coding (HEVC), is the successor to H.264 and was introduced in 2013. It was designed to provide better video quality at lower bitrates, which is essential as we move into the era of 4K and 8K video. H.265 can compress video up to 50% more than H.264 while maintaining the same quality.

Advantages of H.265:

Improved Compression: H.265 can deliver the same quality as H.264 with roughly half the bitrate, which means significant savings in bandwidth and storage space.
Higher Quality at Lower Bitrates: It's particularly beneficial for streaming high-resolution video over limited bandwidth connections.
Future-Proof: As 4K and 8K content become more prevalent, H.265's ability to handle higher resolutions efficiently makes it a future-proof choice.
Comparing H.264 and H.265
When it comes to HDMI transmission, the choice between H.264 and H.265 can affect the quality and smoothness of video playback. H.264 might still be the safe choice for compatibility, but H.265 is undoubtedly the better option for future-proofing your setup and saving bandwidth.

Key Differences:

Bandwidth Efficiency: H.265 is more efficient in terms of bandwidth usage, requiring only half the bandwidth of H.264 for the same video quality.
Hardware Requirements: H.265 requires more powerful hardware for encoding and decoding, which can be a consideration for users with older equipment.
Adoption Rate: H.264 is currently more widely adopted, but H.265 is gaining traction as newer devices come equipped with the necessary hardware support.
Conclusion
The transition from H.264 to H.265 represents a significant step forward in video compression technology. While H.264 remains the most compatible codec today, H.265 is quickly becoming the standard for the future, especially as we demand higher video quality and more efficient bandwidth usage. For users looking to stay ahead of the curve, investing in H.265-capable devices is a wise move.

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HDMI 264 (H.264/AVC) and HDMI 265 (H.265/HEVC) are digital video and audio transmission interfaces widely used in various fields. Let's explore the application scenarios of HDMI 264 and HDMI 265:

HDMI 264 (H.264/AVC):

Digital Television: H.264 is extensively used for the transmission of digital television, including cable TV, satellite TV, and Internet TV.

Video Conferencing: H.264 is utilized in video conferencing systems for high-quality real-time video transmission.

Surveillance Systems: Surveillance cameras and equipment often use H.264 encoding to achieve efficient video transmission.

Internet Streaming: Online video platforms, streaming services, and video websites use H.264 to transmit high-definition videos.

HDMI 265 (H.265/HEVC):

4K and 8K High-Resolution Videos: H.265 is suitable for the transmission of high-resolution videos, such as 4K and 8K content.

Virtual Reality and Augmented Reality: The high compression ratio of H.265 makes it an ideal choice for virtual reality and augmented reality applications.

High Bandwidth Applications: H.265 is very useful for transmitting higher quality videos, such as in online gaming, HD movies, etc.

In summary, both HDMI 264 and HDMI 265 play a significant role in the connection between digital entertainment, information delivery, and multimedia devices. These two encoding standards provide solutions for high-quality audio and video transmission, whether it be for home entertainment, business applications, or other fields.