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# web.streamOpen

Opens a media stream.

Example | Stream Functions

## Syntax

    web.streamOpen({object});

## JavaScript Object

    {
       id:<string>,
       url:<string>,
       protocol:<string>,
       bandwidth:<value>,
       streamBufferingTimeout:<value>,
       dumpPath:<path>,
       eventReportCB:<string>
       adaptiveMode:<value>
    }

Property Name | Description
--- | ---
id | This identifier is used in other functions to specify the stream the functions act on.
url | The full absolute address of the media.
protocol | The communications protocol. One of HTTP or HLS.
bandwidth | The expected bandwidth. If 0, the Runtime Setting is used.
streamBufferingTimeout | The timeout in seconds from the beginning of the download until it is possible to begin play. If timed out, the web.streamPlay call is aborted with a failed status. This argument overrides the runtime setting Streaming > Time out for video buffering.
dumpPath | Path for downloading streaming file.
eventReportCB See Web Stream Event Callback | The name of a user-coded callback function to report events.
AdaptiveMode | 0 for OFF (default) and 1 for ON. If set to ON, HLS (HTTP Live Streaming) video segments are downloaded only when being played. By default, AdaptiveMode is set to OFF and all HLS video segments are downloaded from the beginning of stream play.

## Return Values

Not applicable

## Parameterization

Standard parameterization is not available for this function.

## General Information

The web.streamOpen function opens a media stream.

The event report callback is invoked zero or more times when events occur.

This function is not recorded. You can insert it manually into your script.

## Example

The following example implements the basic streaming flow skeleton:

1. Play the movie from the beginning (the entire movie duration is XXX).
   web.streamPlay( { id : n, playingDuration : XXX } );

2. Pause the movie.
   web.streamPause( { id : n, pausingDuration : XXX } );

3. Stop the movie.
   web.streamStop( { id : n } );

HTTP

Copy code

    function Action()
    {
        //Open an HTTP stream
        web.streamOpen(
        {                        id : 1,
                    url : 'http://myhost/streaming-test/video/tiny.mp4',
                    protocol : 'HTTP'
        }
        );
        //Play for 10s
        web.streamPlay( { id : 1, playingDuration : 10 } );
        //Pause for 5s
        web.streamPause( { id : 1, pausingDuration : 5 } );
        //Seek to 00:00:20
        web.streamSeek( { id : 1, timeOffset : 20 } );
        //Change the speed to 1.5
        web.streamSetParamDouble('1',web.SPEED, 1.5);
        //Play for 10s
        web.streamPlay( { id : 1, playingDuration : 10 } );
        //Get bytes received
        var bytes = web.streamGetParamInt('1',web.BYTES_RECEIVED);
        //Close streaming
        web.streamClose(
        {
        id : 1
        }
        );               return 0;
    }

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