What is meant by Progressive Downloadable Video?

Progressive Downloadable Video refers to a technology that enables playback of video content while it is still being downloaded. This approach allows the user to start watching the video before the entire file has been transferred. As a result, users can enjoy the video in real-time without having to wait for the complete download. The video data is gradually buffered, enabling continuous playback and reducing the waiting time compared to traditional methods where the entire video must be downloaded before playback can begin.

In contrast, methods where the video plays only after being fully downloaded do not provide the advantage of immediate playback. Formats that are specific to certain devices do not pertain to progressive download capabilities; rather, they are about device compatibility. The description of a video that is streamed without needing a connection is also inaccurate, as a connection is fundamentally required for both streaming and progressive downloads, though the mechanics differ.