Question

如何保存在相机胶卷中创建的幻灯片？

(NSString *))handler;
{
    AVMutableComposition* mixComposition = [AVMutableComposition composition];

    AVURLAsset* videoAsset = [AVURLAsset URLAssetWithURL:[NSURL fileURLWithPath:videoPath] options:nil];

    NSError * error = nil;

    for (int i=0;i<[arrayOfSounds count];i++)
    {

        NSString *pathString = [[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"%@", [arrayOfSounds objectAtIndex:i]] ofType:@"mp3"];
        NSLog(@"pathString = %@",pathString);
        AVURLAsset * urlAsset = [AVURLAsset URLAssetWithURL:[NSURL fileURLWithPath:pathString] options:nil];

        AVAssetTrack * audioAssetTrack = [[urlAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0];
        AVMutableCompositionTrack *compositionAudioTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeAudio
                                                                                       preferredTrackID: kCMPersistentTrackID_Invalid];
        CMTime audioDuration = videoAsset.duration;
        audioDurationSeconds = CMTimeGetSeconds(audioDuration);
        int startDur= [[arrayOfTime objectAtIndex:i] intValue];
        NSLog(@"startDur = %d",startDur);
        CMTime audioStartTime = CMTimeMake(i,1);
        CMTime presentTime    = CMTimeMake(1, 1);
        CMTime EndTime        = CMTimeMake(audioDurationSeconds, 1);
        CMTime audioEndTime   = CMTimeAdd(presentTime, EndTime);

     [compositionAudioTrack insertTimeRange:CMTimeRangeMake(presentTime,audioEndTime) ofTrack:audioAssetTrack atTime:audioStartTime error:&error];
    }

    NSString* movPath = [NSString stringWithFormat:@"%@/%@",documentsDirectory,@"Export.mov"];

    //AVURLAsset* videoAsset = [AVURLAsset URLAssetWithURL:[NSURL fileURLWithPath:movPath] options:nil];

    AVMutableCompositionTrack *compositionVideoTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid];

    NSError* vidError;
    [compositionVideoTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, videoAsset.duration) ofTrack:([videoAsset tracksWithMediaType:AVMediaTypeVideo].count >0)? [[videoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0]:nil atTime:kCMTimeZero error:&vidError];
    NSLog(@"Vid error = %@",vidError);

    AVAssetExportSession* _assetExport = [[AVAssetExportSession alloc] initWithAsset:mixComposition presetName:AVAssetExportPresetPassthrough];

    NSString* videoName = @"exportFinal.mov";

    NSString *exportPath = [NSString stringWithFormat:@"%@/%@",documentsDirectory,videoName];
    NSLog(@"exportPath = %@",exportPath);

    NSURL *exportUrl = [NSURL fileURLWithPath:exportPath];

    if ([[NSFileManager defaultManager] fileExistsAtPath:exportPath])
    {
        [[NSFileManager defaultManager] removeItemAtPath:exportPath error:nil];
    }

    _assetExport.outputFileType = @"com.apple.quicktime-movie";
    NSLog(@"file type %@",_assetExport.outputFileType);
    _assetExport.outputURL = exportUrl;
    _assetExport.shouldOptimizeForNetworkUse = YES;

    [_assetExport exportAsynchronouslyWithCompletionHandler:
     ^(void ) {
         switch (_assetExport.status)
         {
             case AVAssetExportSessionStatusCompleted:
                 //export complete
                 NSLog(@"Export Complete");
                 //[self uploadToYouTube];
                 [self cleanUpProcess];
                 break;
             case AVAssetExportSessionStatusFailed:
                 NSLog(@"Export Failed");
                 NSLog(@"ExportSessionError: %@", [_assetExport.error localizedDescription]);
                 //export error (see exportSession.error)
                 break;
             case AVAssetExportSessionStatusCancelled:
                 NSLog(@"Export Failed");
                 NSLog(@"ExportSessionError: %@", [_assetExport.error localizedDescription]);
                 //export cancelled
                 break;
         }
     }];
}

- (void)cleanUpProcess{
    NSError* error;
    NSArray *files = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:documentsDirectory error:&error];

    for(NSString* myFiles in files){

        if([[myFiles pathExtension] isEqualToString:@"mov"]){
            continue;
        }
        NSString* filePath = [NSString stringWithFormat:@"%@/%@",documentsDirectory,myFiles];
        if(![[NSFileManager defaultManager] removeItemAtPath:filePath error:&error]){
            NSLog(@"Error Deleting");
        }

    }
}

它保存在此路径中：

＆＃34;用户/ devendrasingh /库/开发商/ CoreSimulator /设备/ 394AD1C9-E950-422E-BDA1-083CDCEE83F6 /数据/容器/数据/应用/ 98BEC162-C686-4BC1-B698-567B45D65F27 /文档/ exportFinal .MOV ＆＃34;

没有保存在相机胶卷中

Answer 1

试试这个：

#include<stdio.h>
#include<string.h>
int main(){
        int i,j,diff=0,min=0;
        char arr[100],var;
        printf("Enter the string to check for: ");
        scanf("%s",&arr);
        for(i=0;i<strlen(arr);i++){
                arr[i]=toupper(arr[i]);
                printf("%c ",arr[i]);
        }
        printf("\n");
        for(i=0;i<strlen(arr);i++){
                for(j=i+1;j<strlen(arr);j++){
                        if(arr[i]==arr[j]){
                                diff=j-i;
                                //THIS IF BLOCK IS USED FOR FIRST CONDITION FAILURE OF MIN AND DIFFERENCE       
                                if(diff > min){
                                        min=diff;
                                        var=arr[i];
                                }
                                //THIS ELSE BLOCK IS USED FOR REGULAR CHECK FOR THE MIN AND DIFF AND ADJUST MIN TO DIFF ACCORDINGLY
                                else if(diff < min){
                                        min=diff;
                                        var=arr[i];
                                }
                        }
                }
        }
        printf("Final Answer : %c\n",var);
        return 0;
}

如何将照片的幻灯片保存保存到相机角色？

1 个答案: