Use Elcimagepickercontroller to Pick Video

showing video as well as image in ELCImagepicker

I see a line in your code that says:

elcPicker.mediaTypes = @[(NSString *)kUTTypeImage, (NSString *)kUTTypeMovie]; //Supports image and movie types

Change that to:

elcPicker.mediaTypes = @[(NSString *)kUTTypeImage]; //Supports image types

and see what happens.

How to pick videos only in ELCImagePickerController?

import in you .m

#import <MobileCoreServices/UTCoreTypes.h>

and in your method

ELCImagePickerController *elcPicker = [[ELCImagePickerController alloc] initImagePicker];
    elcPicker.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];

Getting video from ALAsset

Here is a clean swift solution to get videos as NSData.
It uses the Photos framework as ALAssetLibrary is deprecated as of iOS9:

IMPORTANT

The Assets Library framework is deprecated as of iOS 9.0. Instead, use the Photos framework instead, which in iOS 8.0 and later provides more features and better performance for working with a user’s photo library. For more information, see Photos Framework Reference.

import Photos

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    self.dismissViewControllerAnimated(true, completion: nil)
    
    if let referenceURL = info[UIImagePickerControllerReferenceURL] as? NSURL {
        let fetchResult = PHAsset.fetchAssetsWithALAssetURLs([referenceURL], options: nil)
        if let phAsset = fetchResult.firstObject as? PHAsset {
            PHImageManager.defaultManager().requestAVAssetForVideo(phAsset, options: PHVideoRequestOptions(), resultHandler: { (asset, audioMix, info) -> Void in
                if let asset = asset as? AVURLAsset {
                    let videoData = NSData(contentsOfURL: asset.URL)
                    
                    // optionally, write the video to the temp directory
                    let videoPath = NSTemporaryDirectory() + "tmpMovie.MOV"
                    let videoURL = NSURL(fileURLWithPath: videoPath)
                    let writeResult = videoData?.writeToURL(videoURL, atomically: true)
                    
                    if let writeResult = writeResult where writeResult {
                        print("success")
                    }
                    else {
                        print("failure")
                    }
                }
            })
        }
    }
}

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