摘要：方法一：-(void) viewDidLoad{[self performSelectorInBackground:@selector(call1) withObject:nil]; }-(void) call1{timer1 = [NSTimer scheduledTimerWithTimeInterval:3.0 target:self selector:@selector(doSomething) userInfo:nil repeats:NO]; [[NSRunLoop currentRunLoop] addTimer:timer1 forMode:NSRunLoopCommonMod 阅读全文

摘要：ffmpeg -i input.mkv -vcodec libx264 -qmin 10 -qmax 51 -qdiff 4 -me_range 16 -keyint_min 25 -qcomp 0.6-b 400K new2.mp4 阅读全文