iphonevideorecorder used ffmpeg, which is lgpl, tho can't be staticaly linked to any proprietary app.
So i diceded to punish them for it(violation lgpg), and here is patched version of binary of iphonevideorecorder, which will not bitch you about 30 seconds limit.
Install app from repo, and replace binary in it with this one.
//illegal link, removed
replace @ with a