1 NSError *error = nil;
 2     NSData* videoData = [NSData dataWithContentsOfURL:[NSURL URLWithString:self.recordFilePath] options:0 error:&error];
 3     if (nil == videoData || videoData.length <= 0)
 4     {
 5         videoData = [NSData dataWithContentsOfFile:self.recordFilePath options:0 error:&error];
 6     }
 7     if (videoData.length <= 0 )
 8     {
 9         return;
10     }
11

第一个if之前的代码会报错,
(lldb) po error Error Domain=NSCocoaErrorDomain Code=256 "未能完成操作。（“Cocoa”错误 256。）" UserInfo=0x174666740 {NSURL=/var/mobile/Containers/Data/Application/FBF2584C-7428-4709-A2F2-80CBD91B6A40/Documents/1.mp4}

百思不得姐,换用第二个OK了
留待来日在做处理吧