Kamcord (YC S12) Helps Record And Share Those Epic Mobile Gaming Moments

Post by khangtoh » Tue, Aug 14, 2012, 9:02 PM UTC

mattzitzmann wrote: post #7

mirsadm wrote: post #3

I noticed this implemented pretty well on the cloud OnLive gaming service. I am curious to know how they are recording the actions though. Is it capturing the frame buffer directly with OpenGL? There'll be a bit of a performance penalty associated with this but for 2D games it might not be so bad. I'd suggest supporting something like MOAI (getmoai.com). Its cross platform and open source.

We have a prototype for Unity3d: http://youtu.be/IwdrCQMCc4s?hd=1 We've found a way to do this that has a very minimal performance hit - for both 2D and 3D game engines. We're definitely looking at Moai too!

Post by khangtoh » Tue, Aug 14, 2012, 9:58 PM UTC

vecter wrote: post #12

khangtoh wrote: post #11

Earlier quoted context omitted.

I feel minimal performance hit is an understatement. Assuming that screen captures are taken at a much lower frame rate, there's still disk write operations involved and writing 15x per sec to disk is definitely not minimal.

We use the same technology that Apple uses in its native camera app to write video. That experience is pretty seamless and has been optimized by Apple to not impact performance. We can record gameplay at 30 FPS while leaving the actual framerate at 60 FPS, as all of the games we are integrated with show: http://www.kamcord.com/games