Streaming media is booming and everyone seems to be getting onboard. A 2015 report by Cisco predicted that in 2016, 6.1 exabytes of data were to be consumed on mobile platforms. It was expected to rise to 9.6 exabytes in 2017 and soar to 15.2 exabytes in 2018. Without knowing the precise numbers, it is safe to say the demand and progress will continue.

In the event you’re involved with streaming media, you either know all about video transcoding, otherwise you’re wondering why you keep hearing about it. In the event you aren’t positive you want it, that places you within the second camp. An understanding of video transcoding and the way to do it is critical for any success with streaming video; particularly if it’s essential to deliver streaming video to quite a lot of different devices.

What’s Video Transcoding?

Video transcoding, typically called video encoding, is the conversion from one digital encoding format to a different, corresponding to for film data files. This entails translating all three parts of a digital video on the identical time — the file format, the video, and the audio.

This is a vital function when a target device doesn’t assist the current format of your media, or has limited storage capacity that requires a reduced file size (think going from WMV to MP4). Additionally it is used to convert incompatible or obsolete data to a better-supported, read newer, video format.

Why is Transcoding Critical?

Video transcoding is critical once you want your content material to succeed in more end users.

For example, you’re preparing to do a live stream out of your office. It’s a possibility that you just’re capturing webcam audio and video with a browser-based deskprime application like Adobe Flash, which generates 1080p H.264 video and Speex audio.

Your show can be delivered live to online viewers; nonetheless, an try to stream it directly can have problems:

Those viewing without sufficient bandwidth won’t be able to view the stream — they’ll be watching the ‘buffering’ circle.

With the intention to render the Speex audio, most people will need to watch utilizing Flash Player on a computer. Now you’ve just excluded almost anyone with slower data speeds, tablets, and mobile phones.

With video transcoding, you can create a set of time-aligned video streams, every with a unique bitrate and frame size, while converting the Speex audio to AAC audio. This group of streams is internet-friendly, permitting you attain virtually any screen on the planet.

How is Video Transcoding Finished?

Video begins life in a format distinctive to the camera or program used to capture your images and sounds. This is typically not the format wanted to deliver the video online or play it from another device. Video transcoding is used to change the original format into one permitting the video and audio to play properly on a person’s units — be they computer, tablet, smartphone, or tv.

Video encoding, or video transcoding, entails a -step process. First, the unique file is decoded to an uncompressed format. Second, this uncompressed format is then encoded into the target format.

What are Formats and File Types in Video Transcoding?

When talking about video transcoding, we check with file codecs, file types, and something called codecs.

Video format specifies how video and audio have been mixed and tells playback units methods to play the files.

Video and audio codec codecs consult with the technologies used to each create and play back the digital video and audio.

Examples of file types are MPEG-4 (MP4), Quicktime (MOV), and Flash Video (FLV). The key variable in most cases is the streaming platform you use. Always check what codecs and codecs are supported by the platform you wish to use, and whether your video file should be converted to a supported format.

DaCast, for example, requires an MPEG-four (MP4) file format with an H.264 video codec. Windows Media Video (WMV) files are Advanced Systems Format (.asf) files that include audio, video, or each compressed with Windows Media Audio (WMA) and Windows Media Video (WMV) codecs.

MP4 video provides better quality and compression over WMV, allowing you to store higher quality video for the same file size. A superb video transcoding program might be able to transform multiple file formats and codecs.

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