Question

I know that we can create movie player using initWithContentURL: and we can pass NSUrl argument. Here I don’t have NSUrl, I have only NSData. By using it can I create movie player?

Answer 1

There is no method available for initializing the Movieplayer with data.

My suggestion : you need to write the data to document directory as a video file and then initialize the player using that url.

Objective C

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *appFile = [documentsDirectory stringByAppendingPathComponent:@"MyFile.m4v"];
[data writeToFile:appFile atomically:YES];

Here data is the NSData of the video file.

You can now use the appFile variable for initializing your movieplayer.

NSURL *movieUrl = [NSURL fileURLWithPath:appFile];
MPMoviePlayerController *moviePlayer = [[MPMoviePlayerController] alloc] initWithContentURL:movieUrl];

Swift

Saving File:

let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
if let docDir = paths.first
{
    let appFile  = docDir.appending("/MyFile.m4v")
    let movieUrl = URL(fileURLWithPath: appFile)

    do
    {
        try data.write(to: movieUrl, options: .atomic)
    }
    catch let error as NSError
    {
        print(error.localizedDescription)
    }
}

Initialising movie player:

let moviePlayer = MPMoviePlayerController(contentURL: movieUrl)

Note:
MPMoviePlayerController is deprecated in iOS 9, so you may need to use AVPlayerViewController