In a video-on-demand scenario, when the playback progress bar is dragged, the end
user will send a URL request, such as
to the server. The server returns the data from the key frame prior to the10th second
to the client (if start=10 is not the key frame).
|File Format||Meta Information||start Parameter||Example|
|MP4||Meta information of an origin site video must be contained in the file header. A video with its meta information contained in the file tail is not supported.||The start parameter specifies the time in seconds. Decimals are supported to indicate milliseconds. For example, start=1.01 indicates that the start time is 1.01s. If the current start is not a key frame, DCDN locates the key frame prior to the time specified by the start parameter.||http: //domain/video.mp4?start=10 requests to play a video from the 10th second.|
|FLV||An origin site video must contain meta information.||The start parameter specifies a byte. If the current start is not a key frame, the DCDN automatically locates the key frame prior to the frame specified by the start parameter.||http:// domain/video.flv?start=10 requests to play a video from the 10th byte.|
- To use the drag/drop playback feature, an origin site must support Range requests. The origin site must be able to return correct 206 Partial Content for an HTTP request header containing a Range field.
- Files of MP4 and FLV format are supported.
- Currently, flv format only supports audio aac and video avc coding formats. Drag and drop are not supported for other coding formats.
- On the Domain Names page, select a domain, and click Configure.
- Go to to enable this function.