把视频数据写到文件里面去来分析

把数据写到文件里面去用

vedioWriter= [[NSMutableData   alloc]   init];

//获取文件路径

NSString  *uidplist = [[NSString    alloc]  initWithFormat:@"vediolist.text"];

NSArray  *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);

uidPath= [[paths    objectAtIndex:0]   stringByAppendingPathComponent:uidplist];

NSData  *data2 = [NSData     dataWithBytes:buf   length:actualSize];

Byte*testByte = (Byte*)[data2bytes];

[vedioWriter    appendBytes:testByte    length:data2.length];

[vedioWriter    writeToFile:uidPath   atomically:YES];

注：不喜勿喷！！！