I'm not an IT specialist. I'm just a regular smartphone user.
I offer 5USD for a RELIABLE kernel without an obsolete file size limitation in video recording to Samsung's official ROM with Android 4.1.2.
And yet actually I'm really interesting in the camera improvement. So...
I'm offering 50USD to anyone who will make Galaxy S2 become able to record FHD+ video with 21:9 aspect ratio (2520x1080) without any other disadvantages.
I can offer other bounties for any reliable improvements to the camera (include the stereo sound recording) without disadvantages.
Any payments will be proceed only after successful firmware testing by me.
Try Kernel Dorimanx V8.44 and DailyRoads Voyager/PRO.