Hi Stefan,
Stefan Sayer wrote:
Hi Greger,
o Greger Viken Teigre [09/07/09 18:43]:
And here is the manual for tandberg's codian MCUs:
http://www.tandberg.com/collateral/documentation/User_Manuals/TANDBERG%20Codian%20MCU%20Tutorial.pdf
With screenshots of menus, configurations, how to set up layouts etc,
you can get some inspiration.
As the mediamixer work indicates: opting for a continuous presence
for 4 participants and mix audio may be within reach. If you only use
one shared encoder, you simplify quite a bit.
Very interesting. So what is roughly the CPU requirement for this
setup, for example h263 conference with 4 participants in split screen?
I'm not a hardware or codec guy, so I'm not sure how to translate into
standard CPU measurements. The Codian MCUs are purpose-built with chips
particularly suitable for video and with lots of fpgas. Video
transcoding is very processing intensive and the boxes come in different
versions and variations to adjust the cost to the number of ports
required (concurrent participants/streams). Now, with the SVC annex
specifying multiple encodings in one stream, it is possible to reduce
the processing requirements and spend the cycles on new applications and
uses. However, this requires support in the clients. I don't think x264
has implemented SVC yet, and of course, the patent issues...
g-)
Thanks
Stefan
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