Firebase downloadURLWithCompletion error - ios

Question

I am trying to download a video from my firebase storage. The way I am doing that is by using the .downloadURLWithCompletion function. When ever the function executes, I receive this error
Error Domain=FIRStorageErrorDomain Code=-13010 "Object videos/video1.m4v
does not exist." UserInfo={object=videos/video1.m4v
, bucket=**********.appspot.com, ResponseBody={
"error": {
"code": 404,
"message": "Not Found"
}
}, data=<7b0a2020 22657272 6f72223a 207b0a20 20202022 636f6465 223a2034 30342c0a 20202020 226d6573 73616765 223a2022 4e6f7420 466f756e 64220a20 207d0a7d>, NSLocalizedDescription=Object videos/video1.m4v
does not exist., ResponseErrorDomain=com.google.HTTPStatus, ResponseErrorCode=404}
I have changed my storage settings on firebase to allow unauthenticated access:
I have also checked to make sure that the storage link is correct:
Here is the code that is accessing the Firebase storage:
import UIKit
import AVKit
import AVFoundation
import FirebaseStorage
class VideoViewController: UIViewController
{
var videoUrl:NSURL!
var storageRef:FIRStorageReference!
override func viewDidLoad()
{
let storage = FIRStorage.storage()
storageRef = storage.referenceForURL("gs://**********.appspot.com")
let videosRef = storageRef.child("videos")
let videoName = NSUserDefaults.standardUserDefaults().objectForKey("videoName") as! String
videosRef.child(videoName).downloadURLWithCompletion { (URL, error) -> Void in
if (error != nil)
{
print(error!)
}
else
{
self.videoUrl = URL
do
{
try self.playVideo()
}
catch
{
print("Error")
}
}
}
super.viewDidLoad()
// Do any additional setup after loading the view.
}
So, I tried using a direct link and it worked!
override func viewDidLoad()
{
let storage = FIRStorage.storage()
storageRef = "gs://*************.appspot.com"
let videosRef = "videos"
let videoName = NSUserDefaults.standardUserDefaults().objectForKey("videoName") as! String
storage.referenceForURL("\(storageRef)/\(videosRef)/\(videoName)").downloadURLWithCompletion { (URL, error) in
if (error != nil)
{
print(error!)
}
else
{
self.videoUrl = URL
do
{
try self.playVideo()
}
catch
{
print("Error")
}
}
}
Of course, using a direct link for something like this isn't exactly the best way to get data. So next I compared the two links generated by printing them out. Here is how I printed the first link:
var videoUrl:NSURL!
var storageRef:FIRStorageReference!
override func viewDidLoad()
{
let storage = FIRStorage.storage()
storageRef = storage.referenceForURL("gs://*********.appspot.com")
let videosRef = storageRef.child("videos")
let videoName = NSUserDefaults.standardUserDefaults().objectForKey("videoName") as! String
print(videosRef.child(videoName))
and it printed
gs://***********.appspot.com/videos/video1.m4v
And the second link:
var videoUrl:NSURL!
var storageRef:String!
override func viewDidLoad()
{
let storage = FIRStorage.storage()
storageRef = "gs://***********.appspot.com"
let videosRef = "videos"
let videoName = NSUserDefaults.standardUserDefaults().objectForKey("videoName") as! String
print("\(storageRef)/\(videosRef)/\(videoName)")
What it printed
gs://***********.appspot.com/videos/video1.m4v
Now, I also tried printing the value of videoName to make sure that it was correct and every time that I printed it out it was video1.m4v
I banked out the link to my firebase storage, but I can assure you that the link is correct all around.
Can someone explain to me why I am getting this error? To me everything looks to be in place.
Thanks!

Answer 1

Try this -- if there is an issue with the underlying representation of a ref this may help:
instead of:
videosRef.child(videoName).downloadURLWithCompletion { (URL, error) -> Void in
do:
storage.referenceForURL(String(videosRef.child(videoName))).downloadURLWithCompletion { (URL, error) -> Void in
that is, does referenceForURL of the stringValue do something different than a direct call. It shouldn't -- if it does, it might have something to do with your videoName. Maybe it ends with a slash? Can you post the value of your videoName?

Answer 2

So, if I understand correctly, you want to download the image without passing the full URL path?
If so, I think downloadURLWithCompletion requires the full URL path.
I can't test this, since I don't have my data set up this way (I just store the full URLs to media files in firebase storage to my firebase database), but try this:
videosRef.child(videoName).dataWithMaxSize(INT64_MAX, completion: { (data, error) in
if let error = error {
print("Error downloading: \(error)")
return
}
cell.imageView?.image = UIImage.init(data: data!)
})

Answer 3

In your firebase storage, you haven't placed your video file inside a folder called videos.
And despite this you try to access to .../videos/filename which doesn't exist. Either try to remove the /videos from: gs://***********.appspot.com /videos /video1.m4v
or
Either create a folder called videos inside your firebase storage and then add the same video inside it with the same name (since you cant drag and drop files into other folders), or remove the:
let videosRef = "videos"
from your path.
Hope it helps.