H264 vs H265: Which Video Codec is Best for Streaming?

There are two widely used video codecs for efficient video compression: H264 and H265. H264 or AVC codec has been around for a long time and is considered a standardized compression practice by many popular video streaming platforms. H265 is more advanced and is termed the successor to the H264 codec.

In this blog, we will mainly compare H264 vs H265 and highlight the major technical differences between both video codecs. Stay tuned to discover the video codec best suited for high-quality video streaming.

Video Codec is a technology used to compress and decompress digital video files, making them ready for efficient online video streaming. Codecs are essential for optimizing the size of video files without compromising much on the quality. Without codecs, high-quality video files would be too large to stream over the internet effectively.

Compression and decompression algorithms used by video codecs play a crucial role in reducing the file size during encoding and again reconstructing the videos during transcoding for smoother playback.

Currently, the popular video codes i.e. H264 (AVC) and H265 (HEVC) are widely used across video streaming platforms for meeting the demands of ultra-HD 4K and 8K videos. In this blog, we will mainly cover the differences between H264 vs H265 and discuss which video codec is suitable for seamless streaming.

H264, also known as Advanced Video Coding (AVC), is considered the most reliable video codec for video compression and transmission. Developed in 2003 by the Joint Video Team, H264 is popular for its ability to deliver high-quality videos at a relatively low bitrate.

With its high compression efficiency, H264 can compress video files and achieve up to a 50% reduction in file size, without significantly losing quality. The video codec supports high video resolutions up to 4K UHD and hence is used by popular video streaming platforms like Netflix, YouTube, and Hulu.

H265 or High-Efficiency Video Coding (HEVC), was introduced in 2013 as a successor to H264. This video codec has all the foundational principles of H264 but includes many advanced features and updated compression algorithms for superior performance. To be precise, H265 has the ability to reduce file size up to 50% better than H264, ensuring much smaller file sizes, without compromising on the video quality.

Moreover, the H265 codec is designed to address the increasing demand for high-resolution videos in 4K and 8K. It efficiently supports higher video resolutions up to 8K and High Dynamic Range (HDR) Content that auto-enhances the contrast and color ratios, ensuring a better viewing experience. Today, H265 is widely used for high-resolution streaming, 360° and VR videos.

Both video codecs have unique capabilities in terms of compression, decompression, video quality, bandwidth, and storage size. Let’s do a technical comparison of H264 vs H265 and understand which video codec performs best for seamless video streaming across devices.

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