VOD (Video on Demand)
What is video on demand?
Video on Demand, often abbreviated as VOD, is a system that allows users to select and watch video content whenever they choose, rather than at a scheduled broadcast time. Video on demand has created a significant shift from traditional broadcasting and cable television in terms of how people consume content.
VOD services are typically delivered via the internet, allowing users to stream or download content on a variety of devices. Nowadays, your smart TV, computer, and mobile device all have access to VOD services. This flexibility and accessibility has made VOD a popular choice for billions of people.
Types of video on demand
There are several types of VOD services available, each offering a different viewing experience. These include subscription video on demand (SVOD), transactional video on demand (TVOD), and ad-supported video on demand (AVOD).
SVOD services, such as Netflix and Hulu, charge a monthly fee for unlimited access to their content libraries. TVOD services, like iTunes or Google Play, allow users to pay for individual pieces of content, such as show episodes and movies. AVOD services like YouTube offer free content supported by advertisements.
How video on demand works
The technology behind VOD is complex, but the basic process is relatively straightforward. When a user selects a video to watch, the VOD server sends a stream of encoded data to the user's device. This data is then decoded and displayed as video content.
Most VOD services use streaming technology, which allows the video to be watched immediately without needing to fully download it. This process relies on a stable internet connection to work without interruptions.
The role of content delivery networks
Content delivery networks (CDNs) play a crucial role in the delivery of VOD services. CDNs are networks of servers that are strategically located around the world. CDNs store copies of videos and other content in places that are geographically closer to the users. This reduces latency and improves streaming quality while users are watching video content.
When a user requests a video, the CDN directs the request to the server that can deliver the content the fastest. This process ensures that users receive high-quality streams, even during high internet traffic times.
The impact of video on demand
The rise of VOD has changed the way we consume content, giving us more control over what we watch and when we watch it. This shift has led to more "binge-watching," where viewers watch several hours of content in one sitting.
VOD has also opened up new opportunities for content creators. With the ability to reach a global audience, independent filmmakers and niche content producers can find their audience without the need for traditional distribution channels.
Video on demand has also contributed to the growth of live streaming. While VOD is primarily associated with pre-recorded content, live streaming offers the immediacy of live television with the convenience of on-demand viewing. Most live streams can also be watched as a VOD after they’ve concluded. This feature is likely to become more popular, as many VOD services currently offer live streaming options.