Streaming media is booming and everyone is 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 exact numbers, it is safe to say the demand and growth will continue.

For those who’re concerned with streaming media, you either know all about video transcoding, or you’re wondering why you keep hearing about it. If you aren’t sure you need it, that places you in the second camp. An understanding of video transcoding and find out how to do it is critical for any success with streaming video; especially if it’s worthwhile to deliver streaming video to a variety of different devices.

What’s Video Transcoding?

Video transcoding, typically called video encoding, is the conversion from one digital encoding format to a different, comparable to for movie data files. This includes translating all three components of a digital video at the identical time — the file format, the video, and the audio.

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

Why is Transcoding Critical?

Video transcoding is critical when you want your content to reach more end users.

For example, you’re making ready 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 mostly desktop application like Adobe Flash, which generates 1080p H.264 video and Speex audio.

Your show will probably be delivered live to online viewers; however, an try to stream it directly will have problems:

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

With a purpose to render the Speex audio, most individuals might want to watch utilizing Flash Player on a computer. Now you’ve just excluded almost anybody with slower data speeds, tablets, and mobile phones.

With video transcoding, you may create a set of time-aligned video streams, every with a special bitrate and frame dimension, while converting the Speex audio to AAC audio. This group of streams is internet-friendly, allowing you reach virtually any screen on the planet.

How is Video Transcoding Achieved?

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 on-line or play it from one other device. Video transcoding is used to alter the unique format into one allowing the video and audio to play properly on a user’s gadgets — be they computer, tablet, smartphone, or tv.

Video encoding, or video transcoding, involves a two-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 Codecs and File Types in Video Transcoding?

When talking about video transcoding, we seek advice from file codecs, file types, and something called codecs.

Video format specifies how video and audio have been combined and tells playback gadgets find out how 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 formats and codecs are supported by the platform you wish to use, and whether or not your video file must be converted to a supported format.

DaCast, for instance, 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 higher quality and compression over WMV, allowing you to store higher quality video for a similar file size. A great video transcoding program will likely be able to convert a number of file formats and codecs.

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