IOS recording Video mov format turn MP4

Source: Internet
Author: User

When recording video using the Uiimagepickercontroller system controller, the default generated format is MOV, and if you want to turn it into MP4 format, we need to use avassetexportsession;

Video quality supported for conversion: Low, Medium, high, 640*480,720p,1080p, etc.

The following code fragment conversion

- (void) Mov2mp4: (Nsurl *) movurl{Avurlasset*avasset =[Avurlasset Urlassetwithurl:movurl Options:nil]; Nsarray*compatiblepresets =[Avassetexportsession Exportpresetscompatiblewithasset:avasset]; /** Avassetexportpresetmediumquality indicates the quality of video conversion,*/    if([compatiblepresets containsobject:avassetexportpresetmediumquality]) {avassetexportsession*exportsession =[[Avassetexportsession alloc] Initwithasset:avasset presetname:avassetexportpresetmediumquality]; //convert complete saved file pathNSString * Resultpath = [Nshomedirectory () Stringbyappendingformat:@"/documents/output-%@.mp4",@"CVT"]; Exportsession.outputurl=[Nsurl Fileurlwithpath:resultpath]; //to convert the format, use MP4 hereExportsession.outputfiletype =AVFileTypeMPEG4; //whether the converted data is optimized for network useExportsession.shouldoptimizefornetworkuse =YES; //asynchronous processing begins conversion[Exportsession exportasynchronouslywithcompletionhandler:^ (void)                  {             //Conversion Status Monitoring             Switch(exportsession.status) { CaseAvassetexportsessionstatusunknown:nslog (@"Avassetexportsessionstatusunknown");  Break;  CaseAvassetexportsessionstatuswaiting:nslog (@"avassetexportsessionstatuswaiting");  Break;  CaseAvassetexportsessionstatusexporting:nslog (@"avassetexportsessionstatusexporting");  Break;  CaseAvassetexportsessionstatusfailed:nslog (@"avassetexportsessionstatusfailed");  Break;  CaseAvassetexportsessionstatuscancelled:nslog (@"avassetexportsessionstatuscancelled");  Break;  Caseavassetexportsessionstatuscompleted: {//Conversion CompleteNSLog (@"avassetexportsessionstatuscompleted"); //test use, save in Mobile albumAlassetslibrary *assetlibrary =[[Alassetslibrary alloc] init]; [Assetlibrary WriteVideoAtPathToSavedPhotosAlbum:exportSession.outputURL Completionblock:^ (Nsurl *asseturl, Nserror *error) {                         if(Error) {NSLog (@"%@", error);                     }                     }];  Break;              }             }                      }]; }  }

Full invocation and Conversion code

#import <AssetsLibrary/AssetsLibrary.h>#import<MobileCoreServices/MobileCoreServices.h>#import<AVFoundation/AVFoundation.h>@interface Viewcontroller ()<UIImagePickerControllerDelegate,UINavigationControllerDelegate>@end @implementation Viewcontroller- (void) viewdidload {[Super viewdidload]; }-(ibaction) STARTCAMPVD: (ID) sender {uiimagepickercontroller*pickercon =[[Uiimagepickercontroller alloc]init]; Pickercon.sourcetype=Uiimagepickercontrollersourcetypecamera; Pickercon.mediatypes= @[(NSString *) Kuttypemovie];//setting up the camera for videoPickercon.cameradevice = Uiimagepickercontrollercameradevicefront;//set camera rear cameraPickercon.videomaximumduration =6;//Maximum shooting Timepickercon.videoquality = uiimagepickercontrollerqualitytype640x480;//Shooting Qualitypickercon.allowsediting = NO;//whether it can be editedPickercon.Delegate=Self ; [Self Presentviewcontroller:pickercon animated:yes completion:nil];}- (void) Imagepickercontroller: (Uiimagepickercontroller *) Picker Didfinishpickingmediawithinfo: (NSDictionary *) Info {NSLog (@"video recording Complete ..."); NSLog (@"%@", info);        [Self mov2mp4:[info objectforkey:uiimagepickercontrollermediaurl]];        [Self dismissviewcontrolleranimated:yes completion:nil]; }- (void) Mov2mp4: (Nsurl *) movurl{Avurlasset*avasset =[Avurlasset Urlassetwithurl:movurl Options:nil]; Nsarray*compatiblepresets =[Avassetexportsession Exportpresetscompatiblewithasset:avasset]; /** Avassetexportpresetmediumquality indicates the quality of video conversion,*/    if([compatiblepresets containsobject:avassetexportpresetmediumquality]) {avassetexportsession*exportsession =[[Avassetexportsession alloc] Initwithasset:avasset presetname:avassetexportpresetmediumquality]; //convert complete saved file pathNSString * Resultpath = [Nshomedirectory () Stringbyappendingformat:@"/documents/output-%@.mp4",@"CVT"]; Exportsession.outputurl=[Nsurl Fileurlwithpath:resultpath]; //to convert the format, use MP4 hereExportsession.outputfiletype =AVFileTypeMPEG4; //whether the converted data is optimized for network useExportsession.shouldoptimizefornetworkuse =YES; //asynchronous processing begins conversion[Exportsession exportasynchronouslywithcompletionhandler:^ (void)                  {             //Conversion Status Monitoring             Switch(exportsession.status) { CaseAvassetexportsessionstatusunknown:nslog (@"Avassetexportsessionstatusunknown");  Break;  CaseAvassetexportsessionstatuswaiting:nslog (@"avassetexportsessionstatuswaiting");  Break;  CaseAvassetexportsessionstatusexporting:nslog (@"avassetexportsessionstatusexporting");  Break;  CaseAvassetexportsessionstatusfailed:nslog (@"avassetexportsessionstatusfailed");  Break;  CaseAvassetexportsessionstatuscancelled:nslog (@"avassetexportsessionstatuscancelled");  Break;  Caseavassetexportsessionstatuscompleted: {//Conversion CompleteNSLog (@"avassetexportsessionstatuscompleted"); //test use, save in Mobile albumAlassetslibrary *assetlibrary =[[Alassetslibrary alloc] init]; [Assetlibrary WriteVideoAtPathToSavedPhotosAlbum:exportSession.outputURL Completionblock:^ (Nsurl *asseturl, Nserror *error) {                         if(Error) {NSLog (@"%@", error);                     }                     }];  Break;              }             }                      }]; }  }- (void) Imagepickercontrollerdidcancel: (Uiimagepickercontroller *) Picker {[Picker Dismissviewcontrolleranimated:yes completion:^{}]; NSLog (@"video recording canceled ..."); }

IOS recording Video mov format turn MP4

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