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17-5
User Guide for Cisco Digital Media Manager 5.4.x
OL-15762-05
Chapter 17 Media Assets and Embedded Software
Concepts
URL and Website Support and Restrictions
•
The URL for a media asset cannot be any more than 128 characters long. (CSCts62766)
•
To render a Twitter page correctly on your digital sign, do not add the Twitter page URL to your
media library. Instead, use the Go To URL system task. Otherwise, the dynamic center column on
the Twitter page, which is coded to refresh itself every 2 seconds, is blank. (CSCtw78817)
•
DMPs cannot render webpages from servers that use self-signed certificates (CSCtt01371).
•
Some webpages with embedded SWF content use JavaScript code that includes multiple
getElementById()
calls or multiple timers, such as
setDuration
or
setInterval
. After a
DMP 4305G renders such pages continuously for as little as 12 hours, the DMP can run out of
memory and reboot automatically, or it might render only a white screen instead of the SWF. Such
cases are the combined result of a Flash 7 memory leak and an over-reliance on JavaScript.
(CSCsy01098; CSCty77900)
File Size and Storage Restrictions
•
The media library can store assets for your digital signs temporarily on the same disk partition that
DMM uses for webserver swap space (CSCsi66683; CSCtt27032). If this entire partition becomes
filled before your media library can move its assets to their permanent location:
–
LICENSE VERIFICATION MIGHT FAIL, preventing any access to UI pages for
licensed features.
–
LICENSE INSTALLATIONS MIGHT FAIL with a spurious message that a license is
not valid.
–
UPLOAD OF ADDITIONAL ASSETS MIGHT FAIL.
–
CHARTING SERVICES MIGHT FAIL.
–
ANY OTHER SERVER OPERATION MIGHT FAIL that requires swap or temp space.
Tip So, before you bulk-import assets, use the DMS-Admin dashboard to check available space!
•
Before you add any asset, confirm that its file size is not more than 1.9 GB, which is the maximum
stream size for any asset that you include in the layout for a DMD presentation.
•
For purposes of stage-one failover, the combined size of all assets cannot exceed the capacity of the
SD card in a DMP.
Local Storage Restrictions
•
Locally Stored Presentations Should Not Include Remote Assets, page 17-6
•
Local Storage Restrictions for DMP 4310G, page 17-6