iOS视频录制（或选择）压缩及上传功能（整理）
最新做的一个功能涉及到了视频的录制、压缩及上传。根据网上诸多大神的经验，终于算是调通了，但也发现了一些问题，所以把我的经验分享一下。
首先，肯定是调用一下系统的相机或相册
代码很基本：
//选择本地视频
-(void)choosevideo
{
UIImagePickerController*ipc=[[UIImagePickerControlleralloc]init];
ipc.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;//sourcetype有三种分别是camera，photoLibrary和photoAlbum
NSArray*availableMedia=[UIImagePickerControlleravailableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera];//Camera所支持的Media格式都有哪些,共有两个分别是@"public.image",@"public.movie"
ipc.mediaTypes=[NSArrayarrayWithObject:availableMedia[1]];//设置媒体类型为public.movie
[selfpresentViewController:ipcanimated:YEScompletion:nil];
ipc.delegate=self;//设置委托
}
//录制视频
-(void)startvideo
{
UIImagePickerController*ipc=[[UIImagePickerControlleralloc]init];
ipc.sourceType=UIImagePickerControllerSourceTypeCamera;//sourcetype有三种分别是camera，photoLibrary和photoAlbum
NSArray*availableMedia=[UIImagePickerControlleravailableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera];//Camera所支持的Media格式都有哪些,共有两个分别是@"public.image",@"public.movie"
ipc.mediaTypes=[NSArrayarrayWithObject:availableMedia[1]];//设置媒体类型为public.movie
[selfpresentViewController:ipcanimated:YEScompletion:nil];
ipc.videoMaximumDuration=30.0f;//30秒
ipc.delegate=self;//设置委托
}
iOS录制的视频格式是mov的，在Android和Pc上都不太好支持，所以要转换为MP4格式的，而且压缩一下，毕竟我们上传的都是小视频，不用特别清楚
为了反馈的清楚，先放两个小代码来获取视频的时长和大小，也是在网上找的，稍微改了一下。
-(CGFloat)getFileSize:(NSString*)path
{
NSLog(@"%@",path);
NSFileManager*fileManager=[NSFileManagerdefaultManager];
floatfilesize=-1.0;
if([fileManagerfileExistsAtPath:path]){
NSDictionary*fileDic=[fileManagerattributesOfItemAtPath:patherror:nil];//获取文件的属性
unsignedlonglongsize=[[fileDicobjectForKey:NSFileSize]longLongValue];
filesize=1.0*size/1024;
}else{
NSLog(@"找不到文件");
}
returnfilesize;
}//此方法可以获取文件的大小，返回的是单位是KB。
-(CGFloat)getVideoLength:(NSURL*)URL
{
AVURLAsset*avUrl=[AVURLAssetassetWithURL:URL];
CMTimetime=[avUrlduration];
intsecond=ceil(time.value/time.timescale);
returnsecond;
}//此方法可以获取视频文件的时长。
接收并压缩
//完成视频录制，并压缩后显示大小、时长
-(void)imagePickerController:(UIImagePickerController*)pickerdidFinishPickingMediaWithInfo:(NSDictionary*)info
{
NSURL*sourceURL=[infoobjectForKey:UIImagePickerControllerMediaURL];
NSLog(@"%@",[NSStringstringWithFormat:@"%fs",[selfgetVideoLength:sourceURL]]);
NSLog(@"%@",[NSStringstringWithFormat:@"%.2fkb",[selfgetFileSize:[sourceURLpath]]]);
NSURL*newVideoUrl;//一般.mp4
NSDateFormatter*formater=[[NSDateFormatteralloc]init];//用时间给文件全名，以免重复，在测试的时候其实可以判断文件是否存在若存在，则删除，重新生成文件即可
[formatersetDateFormat:@"yyyy-MM-dd-HH:mm:ss"];
newVideoUrl=[NSURLfileURLWithPath:[NSHomeDirectory()stringByAppendingFormat:@"/Documents/output-%@.mp4",[formaterstringFromDate:[NSDatedate]]]];//这个是保存在app自己的沙盒路径里，后面可以选择是否在上传后删除掉。我建议删除掉，免得占空间。
[pickerdismissViewControllerAnimated:YEScompletion:nil];
[selfconvertVideoQuailtyWithInputURL:sourceURLoutputURL:newVideoUrlcompleteHandler:nil];
}
-(void)convertVideoQuailtyWithInputURL:(NSURL*)inputURL
outputURL:(NSURL*)outputURL
completeHandler:(void(^)(AVAssetExportSession*))handler
{
AVURLAsset*avAsset=[AVURLAssetURLAssetWithURL:inputURLoptions:nil];
AVAssetExportSession*exportSession=[[AVAssetExportSessionalloc]initWithAsset:avAssetpresetName:AVAssetExportPresetMediumQuality];
//NSLog(resultPath);
exportSession.outputURL=outputURL;
exportSession.outputFileType=AVFileTypeMPEG4;
exportSession.shouldOptimizeForNetworkUse=YES;
[exportSessionexportAsynchronouslyWithCompletionHandler:^(void)
{
switch(exportSession.status){
caseAVAssetExportSessionStatusCancelled:
NSLog(@"AVAssetExportSessionStatusCancelled");
break;
caseAVAssetExportSessionStatusUnknown:
NSLog(@"AVAssetExportSessionStatusUnknown");
break;
caseAVAssetExportSessionStatusWaiting:
NSLog(@"AVAssetExportSessionStatusWaiting");
break;
caseAVAssetExportSessionStatusExporting:
NSLog(@"AVAssetExportSessionStatusExporting");
break;
caseAVAssetExportSessionStatusCompleted:
NSLog(@"AVAssetExportSessionStatusCompleted");
NSLog(@"%@",[NSStringstringWithFormat:@"%fs",[selfgetVideoLength:outputURL]]);
NSLog(@"%@",[NSStringstringWithFormat:@"%.2fkb",[selfgetFileSize:[outputURLpath]]]);
//UISaveVideoAtPathToSavedPhotosAlbum([outputURLpath],self,nil,NULL);//这个是保存到手机相册
[selfalertUploadVideo:outputURL];
break;
caseAVAssetExportSessionStatusFailed:
NSLog(@"AVAssetExportSessionStatusFailed");
break;
}
}];
}
我这里用了一个提醒，因为我的服务器比较弱，不能传太大的文件
-(void)alertUploadVideo:(NSURL*)URL{
CGFloatsize=[selfgetFileSize:[URLpath]];
NSString*message;
NSString*sizeString;
CGFloatsizemb=size/1024;
if(size<=1024){
sizeString=[NSStringstringWithFormat:@"%.2fKB",size];
}else{
sizeString=[NSStringstringWithFormat:@"%.2fMB",sizemb];
}
if(sizemb<2){
[selfuploadVideo:URL];
}
elseif(sizemb<=5){
message=[NSStringstringWithFormat:@"视频%@，大于2MB会有点慢，确定上传吗？",sizeString];
UIAlertController*alertController=[UIAlertControlleralertControllerWithTitle:nil
message:message
preferredStyle:UIAlertControllerStyleAlert];
[alertControlleraddAction:[UIAlertActionactionWithTitle:@"取消"style:UIAlertActionStyleDefaulthandler:^(UIAlertAction*action){
[[NSNotificationCenterdefaultCenter]postNotificationName:@"refreshwebpages"object:niluserInfo:nil];
[[NSFileManagerdefaultManager]removeItemAtPath:[URLpath]error:nil];//取消之后就删除，以免占用手机硬盘空间（沙盒）
}]];
[alertControlleraddAction:[UIAlertActionactionWithTitle:@"确定"style:UIAlertActionStyleDefaulthandler:^(UIAlertAction*action){
[selfuploadVideo:URL];
}]];
[selfpresentViewController:alertControlleranimated:YEScompletion:nil];
}elseif(sizemb>5){
message=[NSStringstringWithFormat:@"视频%@，超过5MB，不能上传，抱歉。",sizeString];
UIAlertController*alertController=[UIAlertControlleralertControllerWithTitle:nil
message:message
preferredStyle:UIAlertControllerStyleAlert];
[alertControlleraddAction:[UIAlertActionactionWithTitle:@"确定"style:UIAlertActionStyleDefaulthandler:^(UIAlertAction*action){
[[NSNotificationCenterdefaultCenter]postNotificationName:@"refreshwebpages"object:niluserInfo:nil];
[[NSFileManagerdefaultManager]removeItemAtPath:[URLpath]error:nil];//取消之后就删除，以免占用手机硬盘空间
}]];
[selfpresentViewController:alertControlleranimated:YEScompletion:nil];
}
}
最后上上传的代码，这个是根据服务器来的，而且还是用的MKNetworking，据说已经过时了，放上来大家参考一下吧，AFNet也差不多，就是把NSData传上去。
-(void)uploadVideo:(NSURL*)URL{
//[MyToolsshowTipsWithNoDisappear:nilmessage:@"正在上传..."];
NSData*data=[NSDatadataWithContentsOfURL:URL];
MKNetworkEngine*engine=[[MKNetworkEnginealloc]initWithHostName:@"www.ylhuakai.com"customHeaderFields:nil];
NSMutableDictionary*dic=[[NSMutableDictionaryalloc]init];
NSString*updateURL;
updateURL=@"/alflower/Data/sendupdate";
[dicsetValue:[NSStringstringWithFormat:@"%@",User_id]forKey:@"openid"];
[dicsetValue:[NSStringstringWithFormat:@"%@",[self.webobjectForKey:@"web_id"]]forKey:@"web_id"];
[dicsetValue:[NSStringstringWithFormat:@"%i",insertnumber]forKey:@"number"];
[dicsetValue:[NSStringstringWithFormat:@"%i",insertType]forKey:@"type"];
MKNetworkOperation*op=[engineoperationWithPath:updateURLparams:dichttpMethod:@"POST"];
[opaddData:dataforKey:@"video"mimeType:@"video/mpeg"fileName:@"aa.mp4"];
[opaddCompletionHandler:^(MKNetworkOperation*operation){
NSLog(@"[operationresponseData]-->>%@",[operationresponseString]);
NSData*data=[operationresponseData];
NSDictionary*resweiboDict=[NSJSONSerializationJSONObjectWithData:dataoptions:NSJSONReadingAllowFragmentserror:nil];
NSString*status=[[resweiboDictobjectForKey:@"status"]stringValue];
NSLog(@"addfriendliststatusis%@",status);
NSString*info=[resweiboDictobjectForKey:@"info"];
NSLog(@"addfriendlistinfois%@",info);
//[MyToolsshowTipsWithView:nilmessage:info];
//[SVProgressHUDshowErrorWithStatus:info];
if([statusisEqualToString:@"1"])
{
[[NSNotificationCenterdefaultCenter]postNotificationName:@"refreshwebpages"object:niluserInfo:nil];
[[NSFileManagerdefaultManager]removeItemAtPath:[URLpath]error:nil];//上传之后就删除，以免占用手机硬盘空间;
}else
{
//[SVProgressHUDshowErrorWithStatus:dic[@"info"]];
}
//[[NSNotificationCenterdefaultCenter]postNotificationName:@"StoryData"object:niluserInfo:nil];
}errorHandler:^(MKNetworkOperation*errorOp,NSError*err){
NSLog(@"MKNetworkrequesterror:%@",[errlocalizedDescription]);
}];
[engineenqueueOperation:op];
}
以上所述是小编给大家介绍的iOS视频录制（或选择）压缩及上传功能（整理），希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对毛票票网站的支持！