How To Webcast - A Basic Primer
Webcasting is the process used to bring TV and radio programs over the Internet for display on computers. How to Webcast live events is generally not known to most people.
In this article, we will go over in brief of how to Webcast live events over the Internet.
Webcasting live events entails going through a sequence of steps. These steps include recording of a live event, editing of the recording, encoding of the recording, storage of the encoded recording on streaming servers, on-demand transmission of the live encoded recording, and finally display of the streaming media on a player on a user's computer.
At every stage, a lot of planning is required. Proper selection of equipment, hardware and software, RTSP Servers, CDNs, and software player at the user end is needed for a successful Webcast. Recording of a live event: Before the recording begins, considerable thought must be given to the optimum selection of recording equipment, hardware and software, and other accessories required for recording the live event. Equipment needed may include DV CAM video recorders, video lights, tripods, DV convertors, laptops, audio mixers, clip on mikes, software on such cameras, vision mixers, roaming mikes, and roaming mike receiving stations. The cameras will be used to record the live equipment. Vision and audio mixers will be used to provide the best output possible. Editing of the recording: This can take place on site or separately through use of professional video editing software. Editing of the recording is necessary to provide the best quality of audio visual output. Encoding of the edited recording: During encoding, the audio visual recording is compressed, which then enables the transmission of the encoded recording over the Internet. Audio visual media is resource intensive, so compression is necessary. Storage of the encoded recording on RTSP servers or Content Delivery Networks (CDNs): As a Webcast is an on-demand service, the encoded recording is stored on streaming servers. These servers store the stream in a format that cannot be saved directly on user computers. These CDNs are designed for split-second retrieval of any specific recording, based on a mouse click demand from a user. Transmission of the encoded stream over the Internet: Based on demand from a user of a specific recording, it is immediately retrieved from the CDNs and transmitted at broadband speeds over the Internet. In this process, care is to be taken so that there are no bottlenecks during transmission. In this step, Webcasting technology lends a helping hand. Display of the streaming media on a user's computer: A broadband Internet connection enabled computer and a player (software) on the user's computer helps in the display of the stream directly, without any buffering required. Some streams can be saved/ downloaded, others cannot be downloaded. So, a combination of broadcasting - server - software enables Webcasting to become successful. Hope this primer helped you to know how to Webcast. For more details, you may use your Internet connection gainfully.
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