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Insert crawler
Create a crawler operation

Create a crawler operation via the timeline

Once you have configured Prisma>Stream Conditioning and Live Encoder, you can configure the crawler operation(s) that can be applied to the timeline.

In our example, we will now create an operation with a crawler.

  1. From Prisma, display the Stream Conditioning service that you created.

  2. Click in the Actions column.

  3. From the Animation tab, click Add.

  4. To configure the operation, enter a name and set the Scheduling mode to All, then enter the Duration, the Material ID (name of crawler template, swf file), the Layer, and specify the crawler parameters. In our example, we have set the following crawler parameters:

    • SWF_TEXT_01: crawler's message
    • SWF_FONT_SIZE: text size
    • SWF_COLOR: text color in Hexadecimal
    • SWF_SPEED: scrolling speed

  5. Click OK to validate. The operation is added to the list of animations.

  6. Click in the Schedule column next to the MyCrawler operation to set the date and time from the Scheduling tab. The operation is added to the timeline. At the scheduled time, the crawler will be displayed on top of the channel.

You can also just drag and drop the icon in the timeline.

  1. You can double click the event in the timeline to view of modify it.

List of crawler parameters

Possible parameters:

  • SWF_TEXT_01: crawler's message
  • SWF_COLOR: RGB color of text in Hexa (ex FFFFFF for white)
  • SWF_COLOR_BACK: RGB background color of text in Hexa (ex FFFFFF for back)
  • SWF_BACK_ALPHA: enable alpha on background
  • SWF_SPEED: scrolling speed (number of pixel per frame: positive number -> right to left, negative number -> left to right)
  • SWF_Y_POSITION: vertical position of text (px) (default is 960)
  • SWF_FONT_SIZE: font size (default is 50)
  • SWF_FONT_SHADOW: enable shadow (disabled by default) (allowed values: 0/1/true/false)
  • SWF_FONT_ITALIC: enable italic on text (disabled by default) (allowed values: 0/1/true/false)
  • SWF_FONT_BOLD: enable bold on text (disabled by default) (allowed values: 0/1/true/false)
  • SWF_TEXT_HTML: SWF_TEXT_01 text is in HTML format. SWF_COLOR* will be ignored.
  • SWF_FONT* and SWF_COLOR* are ignored.

See Adobe ActionScript® 3.0 Reference for the Adobe® Flash® Platform (opens in a new tab).

Example:

<P><FONT SIZE="50">This is an advanced 
<FONT COLOR="#FF0000" SIZE="70"><i><b>1080i25</b></i></FONT>
<FONT LETTERSPACING="6.0" BOLD="1" ITALIC="1"><U>HTML crawler</U></FONT></FONT></P>
ParameterDescriptionDefault Value
TXT_MSGCrawler's message.
Note: If TXT_HTML is enabled, the message should be formatted in HTML.		 
TXT_COLORRGB color of text in Hexa (ex FFFFFF for white)FFFFFF
TXT_COLOR_BKGDRGB background color of crawler and vertical bars (ex FFFFFF for white)000000
TXT_SPEEDSpeed of scrolling (number of pixels per frame).
- positive number: scroll from right to left
- negative number: scroll from left to right		1
TXT_Y_POS_PXLPosition (pixels) of the top of the crawler’s ROI.960
TXT_Y_POS_RATIOPosition (in ratio of height) of the top of the crawler’s ROI (float)
Note: If the value is defined, parameter TXT_Y_POS_PXL is ignored.		 
VID_RATIO_WHPixel ratio (width/height) of video’s ROI (float). With a value equals to 0.8, crawler will be placed at 80% of the height of the picture.
Note: Depending on the ratio, the width of the vertical bars to the right and left of the video’s ROI will be adjusted.		1.78 (~16/9)
TXT_FONT_SIZEFont size of the crawler50
TXT_FONT_NAMEFont of the crawler.
Note: Font must be be installed on machine. By default fonts 'Liberation Sans' and 'DejaVu Sans' are installed by Live Encoder.		embedded police: Microsoft JhengHei (微軟正黑體)
TXT_FONT_SHADOWEnable shadow on the crawler’s message. Allowed values: 0, 1, true or falsefalse
TXT_FONT_ITALICEnable italic on the crawler’s message. Allowed values: 0, 1, true or falsefalse
TXT_FONT_BOLDEnable bold o on the crawler’s message. Allowed values: 0, 1, true or falsefalse
TXT_HTMLEnable HTML text for the crawler. Allowed values: 0, 1, true or false
Note: When enabled, TXT_FONT_SIZE, TXT_FONT_NAME, TXT _FONT_ITALIC, TXT_FONT_BOLD, and SWF_COLOR are ignored.
See example below.		false

Example of HTML message:

<P><FONT FACE="/usr/share/fonts/liberation/LiberationSans-Bold.ttf"
               SIZE="50">This is an advanced <FONT COLOR="#FF0000"
               SIZE="70"><i><b>1080i25</b></i></FONT><FONT LETTERSPACING="6.0"
               BOLD="1" ITALIC="1"><U>HTML crawler</U></FONT></FONT></P>

Action Script 3.0 has a limited HTML support. You can find a complete documentation for accepted HTML tag at the following URL: https://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/text/TextField.html#htmlText (opens in a new tab)

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