jayeshk

#import "ViewController.h"
#import <AVFoundation/AVFoundation.h>
#import <AssetsLibrary/AssetsLibrary.h>


//typedef (^AudioWriteComplection)(Bool, NSError);

@interface AVAsset (AudiExtract)

jayeshk

AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:url options:nil];
AVAssetImageGenerator *generator = [[AVAssetImageGenerator alloc] initWithAsset:asset];
generator.requestedTimeToleranceAfter =  kCMTimeZero;
generator.requestedTimeToleranceBefore =  kCMTimeZero;
for (Float64 i = 0; i < CMTimeGetSeconds(asset.duration) *  FPS ; i++){
  @autoreleasepool {
    CMTime time = CMTimeMake(i, FPS);
    NSError *err;
    CMTime actualTime;
    CGImageRef image = [generator copyCGImageAtTime:time actualTime:&actualTime error:&err];

jayeshk

NSURL* videoURL = [[NSBundle mainBundle] URLForResource:@"demo-clip" withExtension:@"mp4"];;
    ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
    ALAssetsLibraryWriteVideoCompletionBlock completionBlock =
    ^(NSURL *savedURL, NSError *error) {
        if (error) {
            NSLog( @"Error while saving video Photo Library: %@", error );
        } else {
            NSLog( @"Successfuly saved video to Photo Library %@", savedURL.absoluteString);
        }
    };

jayeshk

ALAssetsLibrary *assetLibrary = [[ALAssetsLibrary alloc] init];
[assetLibrary enumerateGroupsWithTypes:ALAssetsGroupAll usingBlock:^(ALAssetsGroup *group, BOOL *stop) {
        if (group != NULL) {
            [group enumerateAssetsUsingBlock:^(ALAsset *result, NSUInteger index, BOOL *stop) {
                   NSLog(@"asset: %@", result);
            }];
        }
    } failureBlock:^(NSError *error) {
        NSLog(@"Error -- %@", error);
}];