Forums > Jitter

OpenGL Xfade patch efficiency

Dec 27 2006 | 8:27 pm

Sorry, forgot to include this part…

If anyone could tell me how to get this patch working a lot more efficiently, please let me know. Also, could anyone who is using either a G5 or an Intel Core Duo (i.e. something more powerful than my G4) machine please let me know how the patch handles so I know just how efficient it needs to be.

Many thanks.

Dec 29 2006 | 5:37 am

First, how many videos do you need to see simultaneously? If it’s not
20, then there are a good number of things you can do to make this
more efficient.

1) keeps doing stuff until it receives the stop message.
If you’re not using a object, make it stop.

2) You may want to investigate using poly~ here. You have a ton of
identical subpatches that can be more easily maintained and managed
with poly~. See the PolyMovie example in the
jitter-examples/video/quicktime folder.

3) If you’re sending alot of data to the GPU, you may want to use uyvy
mode, e.g. @colormode uyvy. In other words, if you have
alot of simultaneous streams or several large streams going to the GPU
as they do with, you may want to try this out

4) I’m sure there’s more, but first figure some things out with poly~
and then get back to the list with more questions if you have them.


Dec 29 2006 | 6:39 am

Whats uni?

Dec 29 2006 | 7:14 am

I think it’s short for university and maybe sometimes unicycle.


On 12/28/06, Nicholas C. Raftis III wrote:
> Whats uni?
> —
> -=ili!ili=- -=ili!ili=-

Dec 29 2006 | 7:47 am

so out of all those big words you chose to abbreviate university?

how about:

I made vid patch 4 uni proj that xfade 2 vid clip so that it mix em up all neat and trip ppl out fo sho

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