cocos2d for iPhone

A fast, easy to use, free, and community supported 2D game engine

1. 

   bradparks
   Member

   Hey there!

   I'm wondering if anyone can point me to links/resources for how to create an app that exports videos from an iPhone app?

   I'd like my app to be able to:
   - Import video from the camera roll
   - Allow users to edit/add effects (which I expect would be a cocos2d layer on top of the video)
   - Export the video to the camera roll, or YouTube

   I've got a fair amount of experience with Cocos2d and Objective C, but not with anything to do with video import/export.... My kids love making stop motion videos, and I'd really like to make a better stop motion app than the one we currently use ;-) Much more realtime editing oriented....

   Thanks for any pointers!

   Brad.

   PS: I've been searching YouTube and the forum for things, but keep getting tutorial videos on how to build iphone things, not on how to build iphone apps that import/export videos.... thanks in advance.....

   Posted 1 year ago #
2. 

   Dragyn
   Member

   I found a link regarding saving photos to the camera roll. I'm sure the basic principle should apply to video, too. It looks like the idea is to save it to the documents directory first, and then push it to the camera roll.

   http://stackoverflow.com/questions/2538907/save-image-to-camera-roll-with-uiimagewritetosavedphotosalbum

   Posted 1 year ago #
3. 

   bradparks
   Member

   thanks @Dragyn.... that's good to know... i'll post back if I find out anything solid... I did find these good links though, that use ffmpeg to do stuff, which would possibly have licensing issues but is interesting nonetheless ;-)

   http://www.codza.com/extracting-frames-from-movies-on-iphone

   http://www.catswhocode.com/blog/19-ffmpeg-commands-for-all-needs

   Posted 1 year ago #
4. 

   renderplace
   Member

   @bradparks forget about ffmpeg, AVAssetWriter and the rest of the AVFoundation framework should be your best friend since iOS 4.1 :)

   I'm using this in my Draw-n-Show app, which actually does the realtime h.264 movie encoding - http://www.cocos2d-iphone.org/forum/topic/15197

   This is a good start with basic implementation structure http://stackoverflow.com/questions/3741323/how-do-i-export-uiimage-array-as-a-movie/3742212#3742212

   Posted 1 year ago #
5. 

   bradparks
   Member

   @renderplace - thanks a ton! nice links for sure... I should've (but didn't) realize that the native iPhone api's for doing this would be hardware accelerated - seems obvious now that I read some of those linked posts.... Thanks again!

   Posted 1 year ago #

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