It is fast becoming the standard video compression format for the video surveillance world, for example. Its use can be specially adequate for long-distance transmission of signals using existing wires and infrastructure. The H.264 video compression format is perfect for AV distribution to one or more video sources (multicasting streams for many displays). H.264 applications - When and Where to use ? Find out more about our HDMI over IP Distribution solution. For instance, you can stream one set of video signals to a display, a video wall and a digital signage system all at the same time. What makes H.264 so versatile is that you can stream video from an encoder to multiple decoders simultaneously. On the other end, a decoder converts the signals back to an uncompressed HDMI format. H.264 works by encoding (converting) HDMI (HD) audio and video signals into an IP stream that can be transmitted over an IP network. It was developed and maintained by the ITU-T Video Coding Experts Group (VCEG) with the ISO/IEC JTC1 Moving Picture Experts Group (MPEG).Ĭommonly used for the recording, compression, and distribution of video content, the H.264 format is a network-friendly video transmission method that delivers high-quality images without being a bandwidth hog. H.264 or MPEG-4 AVC (Advanced Video Coding) is a video coding format for recording and distributing full HD video and audio. It's estimated that by 2025, most conventional video distribution solutions using HDBaseT or other proprietary transmission methods will be replaced by more flexible IP-based systems, as the popularity of H.264 continues to grow. And H.264 isn't just limited to consumer electronics. You see this codec for example with HD DVDs, HDTV, pay-TV or YouTube videos. H.264 touches every aspect of our digital lives and the popularity of H.264 continues to grow. Streaming lossless media isn’t feasible for most Internet connections, which is why lossy codecs like H.264 and H.265 prevail online.The H.264 video compression standard, also known as MPEG-4 Part 10, Advanced Video Coding, MPEG-4 AVC or AVC video, is an industry standard for video compression that is one of the most frequently used video formats nowadays. It’s a trade-off between quality and playback experience, with lossy codecs offering much smoother playback that might include interpolation and other compression artifacts. During playback, lossless codecs completely reconstruct the compressed data while lossy codecs serve up only an approximation. But out of all of them, H.264 and H.265 get the most attention by far.Ĭodecs come in two classes: lossless and lossy. MPEG-2, JPEG2000, and VP9 are just a few you might hear about. There are lots of different video codecs out there. ![]() The codec comes into play at the start, determining how the raw footage and sound are compressed within the container, and decodes the file for playback as needed. The difference is this: A container holds the compressed video and audio and any other components of the file, such as any metadata or subtitles. For video files, that means formats like AVI, MOV, or MP4. ![]() The term itself is a combination of the words “coding” and “decoding.”Ĭodecs are often confused with containers. There are also audio codecs that do the same for audio. But what even is a “codec”?Ī video codec is a process for compressing and decompressing video data. It’s a term you’ll hear often in the streaming world and probably use a fair bit yourself. H.265: Average bandwidth required per resolution But the shift from macroblocks to CTUs is the most significant contributor to H.265’s greater efficiency. There are other technological enhancements at work, such as superior motion compensation and spatial prediction. H.265 uses a newer block structure called coding tree units (CTUs), which can process sizes of up to 64×64 pixels. H.264 uses what are called macroblocks, processing units that span 4×4 to 16×16 pixels. What accounts for this difference is how each video compression standard processes frames. ![]() This is a big advantage especially when it comes to storing and streaming 4K video and other high-resolution video content. The benefits of this are twofold: H.265 video files don’t take up as much storage space, and they require less bandwidth to stream. The H.265 codec compresses information more efficiently than H.264, resulting in files of comparable video quality that are about half the size.
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