Hi,
when we want to start to get the Capture Agent compatible with current
Ubuntu releases (11.04 and later) we face the challenge that the
producer for Epiphan VGA2USB devices needs to be completly refactored.
This will take quite a lot of development resources.
The EpiphanProducer code allows:
- To start a vga-recording without a signal connected.
- To detect vga-signal loss and display an image instead.
- To detect a reconnect of the vga-signal and switch back to the VGA signal.
- To scale the vga, if the new connected signal has a different
resoultion. (It cannot detect resoultion changes by the way)
All other VGA-grabbers from other manufacturers can only be connected as
custom devices and have to implement these features in their hardware,
need additional hardware scalers (like we recommend one in the CA
reference hardware [1]), or encounter problems on signal changes.
I don't see any available developers to work on this problem and I have
hard feelings about our current preference of the VGA2USB devices. So my
#proposal would be to abandon the special treatment of the Epiphan
devices and remove the EpiphanProducer code from the Capture Agent and
treat the VGA2USB like any other VGA-grabber. Adopters can still use
their old hardware but need to buy scalers to make them work reliable.
And we need to update to Ubuntu 12.04 LTS as many adopters will have a
hard time getting Ubuntu to work on a recent computer.
If you have objections against this proposal please come up with
suggestions on how get the development resources to work on this issue.
Thanks
Rüdiger
[1] http://opencast.jira.com/wiki/display/MHDOC/Reference+Hardware+1.3
--
________________________________________________
Rüdiger Rolf, M.A.
Universität Osnabrück - Zentrum virtUOS
Heger-Tor-Wall 12, 49069 Osnabrück
Telefon: (0541) 969-6511 - Fax: (0541) 969-16511
E-Mail: [email protected]
Internet: www.virtuos.uni-osnabrueck.de
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