![]() Step one involves decoding the original data into an intermediate format, sometimes called a mezzanine, and step two re-sizes and re-encodes the video to a new or several new formats depending on the final viewing device. Most transcoders use a two-step process of decoding and re-encoding. The source video can either be real-time or file-based. Transcoding is the process of converting an encoded stream from one format to another, or from one size to another. Although software can be a great option for file-based encoding of video content, they don’t offer ultra low latency levels comparable to dedicated hardware encoders and therefore not suitable for most live broadcast contribution applications. Software encoders can be installed on standard off the shelf hardware or as virtual machines (VM) in data centers or cloud platforms. Hardware video encoders like the Haivision Makito X series are used by many of the top broadcasters in the world, including Eurovision Sport and SNY, and in a wide range of industries for delivering flawless quality, low latency video in many different applications including:īroadcast – for backhaul, live remote interviews, return feeds, and remote productionĮnterprise – for internet streaming of your all-hands meetings, remote contribution, as IPTV, and digital signageĭefense – for mission critical Intelligence, Surveillance and Reconnaissance (ISR) applications Hardware encoders are turnkey devices with dedicated processing power for low latency encoding of video streams whereas software encoders have to share CPU and other hardware resources. To achieve these levels of compression, video encoders use video compression algorithms known as codecs (such as H.264/AVC or H.265/HEVC) can reduce the raw content data by as much as 1,000 times. When working with video files rather than live video, encoders are used to compress and reduce the size of video content so that it can take up less storage space and be easier to transfer from one part of a video production workflow to another. Given the constant struggle for bandwidth efficiency, compression significantly reduces the bandwidth required, making it possible for real-time video streams or files to be easily transmitted across constrained networks such as the public internet. When it comes to transporting uncompressed raw video, this can mean a colossal amount of data to send over any connection. Live video encoding is the process of compressing large, raw video and audio files so that they use less network bandwidth. There are two types of video encoding live and file-based, and it’s important to make the distinction between them. ![]()
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