I want to assing thumbnails of videos to uiimageviews by reading the videos names and create a thumbnail based on these names.
Here is my code:
let fileManager = NSFileManager.defaultManager()
// We need just to get the documents folder url
let documentsUrl = fileManager.URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0] as NSURL
do { let directoryUrls = try NSFileManager.defaultManager().contentsOfDirectoryAtURL(documentsUrl, includingPropertiesForKeys: nil, options: NSDirectoryEnumerationOptions.SkipsSubdirectoryDescendants)
} catch {
let directoryUrls = documentsUrl
}
let video = AVAsset(URL: directoryUrls)
let AVThumbnailAsset = AVAssetImageGenerator(asset: video)
let time = CMTimeMakeWithSeconds(1.0, 1)
var actualTime : CMTime = CMTimeMake(0, 0)
let myImage: CGImage
let convertedImage: UIImage
do{
myImage = try AVThumbnailAsset.copyCGImageAtTime(time, actualTime: &actualTime)
convertedImage = UIImage.init(CGImage: myImage)
} catch {
print("This is the Error")
print(error)
convertedImage = UIImage(named: "2.35:1")!
}
videoThumb.image = convertedImage
What am I doing wrong?
Related
I am trying to generating thumbnail from video files which stored in documents directory. First I am collecting only video files with mp4 formats :
override func viewWillAppear(_ animated: Bool) {
let VIDEO = [collect(files: "mp4"),
collect(files: "MP4")]
videoArray = Array(VIDEO.joined())
}
func collect(files:String) -> [String] {
var fileExtentions = [String]()
let documentsUrl = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
let fileManager = FileManager.default
let keys = [URLResourceKey.isDirectoryKey, URLResourceKey.localizedNameKey]
let options: FileManager.DirectoryEnumerationOptions = [.skipsPackageDescendants, .skipsSubdirectoryDescendants, .skipsHiddenFiles]
let enumerator = fileManager.enumerator(
at: documentsUrl,
includingPropertiesForKeys: keys,
options: options,
errorHandler: {(url, error) -> Bool in
return true
})
if enumerator != nil {
while let file = enumerator!.nextObject() {
let path = URL(fileURLWithPath: (file as! URL).absoluteString, relativeTo: documentsUrl).path
if path.hasSuffix(files){
fileExtentions.append(path)
}
}
}
return fileExtentions
}
Then fill tableview's data like this :
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! VideoCell
let files = videoArray[indexPath.row]
let fileURL = URL(fileURLWithPath: files)
//Vido Title
cell.videoTitle.text = fileURL.lastPathComponent.removingPercentEncoding!
cell.thumbnail.image = getThumbnailFrom(path:fileURL)
return cell
}
I am generating thumbnail from videos like this :
func getThumbnailFrom(path: URL) -> UIImage? {
do {
let asset = AVURLAsset(url: path , options: nil)
let imgGenerator = AVAssetImageGenerator(asset: asset)
imgGenerator.appliesPreferredTrackTransform = true
let cgImage = try imgGenerator.copyCGImage(at: CMTimeMake(0, 5), actualTime: nil)
let thumbnail = UIImage(cgImage: cgImage)
return thumbnail
} catch let error {
print("*** Error generating thumbnail: \(error.localizedDescription)")
return nil
}
}
But finally when run the app , compiler gives me this error :
*** Error generating thumbnail: The requested URL was not found on this server.
Finally fix the problem by finding the right URL :
let documentsURL = NSURL(fileURLWithPath: NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first!,isDirectory: true )
let urlToMyPath = documentsURL.appendingPathComponent(fileURL.lastPathComponent.removingPercentEncoding!)!
#Mc.Lover Tested getThumbnailFrom() function from my side. It is working fine at my side. Probably you might have to check whether the path url is correct. Otherwise it could be an issue with the set of video files you have.
Below is the code I tested.
func getThumbnailFrom() -> UIImage? {
do {
let path = Bundle.main.path(forResource: "Video_05", ofType:"mp4")!
let asset = AVURLAsset(url: URL.init(fileURLWithPath: path) , options: nil)
let imgGenerator = AVAssetImageGenerator(asset: asset)
imgGenerator.appliesPreferredTrackTransform = true
let cgImage = try imgGenerator.copyCGImage(at: CMTimeMake(0, 5), actualTime: nil)
let thumbnail = UIImage(cgImage: cgImage)
return thumbnail
} catch let error {
print("*** Error generating thumbnail: \(error.localizedDescription)")
return nil
}
}
I am using following code to generate a URL of remote video using AVAsset class
func generateThumnail(url :URL, fromTime:Float64) -> UIImage? {
let asset :AVAsset = AVAsset(url:url)
let assetImgGenerate : AVAssetImageGenerator = AVAssetImageGenerator(asset: asset)
assetImgGenerate.appliesPreferredTrackTransform = true
assetImgGenerate.requestedTimeToleranceAfter = kCMTimeZero;
assetImgGenerate.requestedTimeToleranceBefore = kCMTimeZero;
let time : CMTime = CMTimeMakeWithSeconds(1,30)
do {
let img = try assetImgGenerate.copyCGImage(at: time, actualTime: nil)
return UIImage(cgImage: img)
} catch let error as NSError {
print("Image generation failed with error \(error)")
return nil
}
return nil
}
If fails sometimes ore more often with following error for same video URL
AVFoundationErrorDomain Code=-11800
Not sure whats wrong with the above code I am new to AVAsset and related framework
any help is appreciated
func getVideoThumbNail(_ videoName: String) -> UIImage {
do {
let url = URL(fileURLWithPath: getDocumentsDirectory().appendingPathComponent(videoName))
let asset = AVURLAsset(url: url, options: nil)
let imgGenerator = AVAssetImageGenerator(asset: asset)
imgGenerator.appliesPreferredTrackTransform = true
let cgImage = try imgGenerator.copyCGImage(at: CMTimeMake(2, 3), actualTime: nil)
return UIImage(cgImage: cgImage)
} catch let error as NSError {
print("\(ERROR_GENERATING_THUMNAIL): \(error)")
}
return ERROR_GENERATING_THUMNAIL
}
func getDocumentsDirectory() -> NSString {
let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
return paths[0] as NSString
}
I have a simple ImagePicker for the user to select, or take, a profile picture. I want to save this image to the Home Directory for easy loading later.
The problem is with the Image type not being set.
//Save Image
_ = PPimagePicked.image
let imageData = UIImageJPEGRepresentation(PPimagePicked.image!, 0.6)
let compressedJPGImage = UIImage(data: imageData!)
UIImageWriteToSavedPhotosAlbum(compressedJPGImage!, nil, nil, nil)
// Get Document Root Path
let path = URL(fileURLWithPath: NSHomeDirectory()).appendingPathComponent("Documents/profile.jpg")
do {
//Save image to Root
try imageData?.write(to: path, options: .atomic)
print("Saved To Root")
} catch let error {
print(error)
}
The exact Error is :
"[Generic] Creating an image format with an unknown type is an error"
Please try this code i am using it in swift 2.2. Below method includes for both UIImageJPEGRepresentation, UIImagePNGRepresentation
if let image = UIImage(named: "example.png") {
if let data = UIImageJPEGRepresentation(image, 0.8) {
let filename = getDocumentsDirectory().appendingPathComponent("copy.png")
try? data.write(to: filename)
}
}
func getDocumentsDirectory() -> URL {
let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
let documentsDirectory = paths[0]
return documentsDirectory
}
if let image = UIImage(named: "example.png") {
if let data = UIImagePNGRepresentation(image) {
let filename = getDocumentsDirectory().appendingPathComponent("copy.png")
try? data.write(to: filename)
}
}
try converting the image to image data
let imageCapture = UIImage(data: dataImage)!
UIImageWriteToSavedPhotosAlbum((image: imageCapture), nil, nil, nil)
So I used this code:
func videoSnapshot(filePathLocal: String) -> UIImage? {
let vidURL = NSURL(fileURLWithPath:filePathLocal as String)
let asset = AVURLAsset(URL: vidURL)
let generator = AVAssetImageGenerator(asset: asset)
generator.appliesPreferredTrackTransform = true
let timestamp = CMTime(seconds: 1, preferredTimescale: 60)
do {
let imageRef = try generator.copyCGImageAtTime(timestamp, actualTime: nil)
return UIImage(CGImage: imageRef)
}
catch
{
print("Image generation failed with error \(error)")
return nil
}
}
to get the UIImage of a snapshot from my video. I called this function like this:
let tempImg: UIImage = videoSnapshot(pathToFile)!
now I would like to upload this tempImg to my server, and to to this I need a path to this file - I will pass it later to the function that uploads data further. How can I get a temporary path to it and store it as a String or NSURL?
You have to get the image data using JPEG Representation method (check this so UIImageJPEGRepresentation answer) and use NSData method writeToURL or writeToPath to save it to disk. For temporary items you can create a destination url at the temporary folder url using URL appendingPathComponent method:
Swift 3 would look like this:
let destinationURL = FileManager.default.temporaryDirectory.appendingPathComponent("filename.jpg")
if let tempImg = videoSnapshot("filePathLocal"),
let imgData = UIImageJPEGRepresentation(tempImg, 1) {
do {
try imgData.write(to: destinationURL, options: .atomic)
print("saved at:", destinationURL.path)
} catch {
print(error.localizedDescription)
}
}
Swift 2.3
if let tempImg = videoSnapshot("filePathLocal"),
let imgData = UIImageJPEGRepresentation(tempImg, 1),
let destinationURL = NSFileManager.defaultManager().temporaryDirectory.URLByAppendingPathComponent("filename.jpg")
where imgData.writeToURL(destinationURL, atomically: true) {
print("saved at:", destinationURL.path)
}
In my app I am storing an image in local storage and I am saving the path of that image in my database. How can I load the image from that path?
Here is the code I am using in order to save the image:
let myimage : UIImage = UIImage(data: data)!
let fileManager = NSFileManager.defaultManager()
let urls = fileManager.URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)
let documentDirectory = urls[0] as NSURL
print(documentDirectory)
let currentDate = NSDate()
let dateFormatter = NSDateFormatter()
dateFormatter.dateStyle = .NoStyle
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let convertedDate = dateFormatter.stringFromDate(currentDate)
let imageURL = documentDirectory.URLByAppendingPathComponent(convertedDate)
imageUrlPath = imageURL.absoluteString
print(imageUrlPath)
UIImageJPEGRepresentation(myimage,1.0)!.writeToFile(imageUrlPath, atomically: true)
And this is the path where my image stored
file:///var/mobile/Containers/Data/Application/B2A1EE50-D800-4BB0-B475-6C7F210C913C/Documents/2016-06-01%2021:49:32
This is how i tried to retrieve the image but it's not displaying anything.
let image : String = person?.valueForKey("image_local_path") as! String
print(person!.valueForKey("image_local_path")! as! String)
cell.img_message_music.image = UIImage(contentsOfFile: image)
Folder /B2A1EE50- ... changes every time you run application.
../Application/B2A1EE50-D800-4BB0-B475-6C7F210C913C/Documents/..
Which works for me is to store fileName and get documents folder.
Swift 5
Create getter for directory folder
var documentsUrl: URL {
return FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
}
Save image :
private func save(image: UIImage) -> String? {
let fileName = "FileName"
let fileURL = documentsUrl.appendingPathComponent(fileName)
if let imageData = image.jpegData(compressionQuality: 1.0) {
try? imageData.write(to: fileURL, options: .atomic)
return fileName // ----> Save fileName
}
print("Error saving image")
return nil
}
Load image :
private func load(fileName: String) -> UIImage? {
let fileURL = documentsUrl.appendingPathComponent(fileName)
do {
let imageData = try Data(contentsOf: fileURL)
return UIImage(data: imageData)
} catch {
print("Error loading image : \(error)")
}
return nil
}
Also you can try this.
Check if your path exist
if NSFileManager.defaultManager().fileExistsAtPath(imageUrlPath) {}
Create an URL to your path
let url = NSURL(string: imageUrlPath)
Create data to you URL
let data = NSData(contentsOfURL: url!)
Bind the url to your imageView
imageView.image = UIImage(data: data!)
Final code:
if NSFileManager.defaultManager().fileExistsAtPath(imageUrlPath) {
let url = NSURL(string: imageUrlPath)
let data = NSData(contentsOfURL: url!)
imageView.image = UIImage(data: data!)
}
This code works for me
func getImageFromDir(_ imageName: String) -> UIImage? {
if let documentsUrl = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first {
let fileURL = documentsUrl.appendingPathComponent(imageName)
do {
let imageData = try Data(contentsOf: fileURL)
return UIImage(data: imageData)
} catch {
print("Not able to load image")
}
}
return nil
}
Swift 4:
if FileManager.default.fileExists(atPath: imageUrlPath) {
let url = NSURL(string: imageUrlPath)
let data = NSData(contentsOf: url! as URL)
chapterImage.image = UIImage(data: data! as Data)
}
Replace absoluteString with path
let myimage : UIImage = UIImage(data: data)!
let fileManager = NSFileManager.defaultManager()
let urls = fileManager.URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)
let documentDirectory = urls[0] as NSURL
print(documentDirectory)
let currentDate = NSDate()
let dateFormatter = NSDateFormatter()
dateFormatter.dateStyle = .NoStyle
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let convertedDate = dateFormatter.stringFromDate(currentDate)
let imageURL = documentDirectory.URLByAppendingPathComponent(convertedDate)
imageUrlPath = imageURL.path
print(imageUrlPath)
UIImageJPEGRepresentation(myimage,1.0)!.writeToFile(imageUrlPath, atomically: true)
This sample code may save someone some typing,
write an UIImage to disk in your own directory:
IM = UIImage, your image. for example, IM = someUIView.image or from the camera
let newPhotoFileName = randomNameString() + ".jpeg"
let imagePath = checkedImageDirectoryStringPath() + "/" + newPhotoFileName
let imData = UIImageJPEGRepresentation(IM, 0.20)
FileManager.default.createFile(atPath: imagePath, contents: imData, attributes: nil)
print("saved at filename \(newPhotoFileName)")
later to read that image ...
.. and convert it back to a UIImage as in a UIImageView
NAME = that filename, like jahgfdfs.jpg
let p = checkedImageDirectoryStringPath() + "/" + NAME
devCheckExists(fullPath: p)
var imageData: Data? = nil
do {
let u = URL(fileURLWithPath: p)
imageData = try Data(contentsOf: u)
}
catch {
print("catastrophe loading file?? \(error)")
return
}
// and then to "make that an image again"...
imageData != nil {
picture.image = UIImage(data: imageData!)
print("that seemed to work")
}
else {
print("the imageData is nil?")
}
// or for example...
Alamofire.upload(
multipartFormData: { (multipartFormData) in
multipartFormData.append(imageData!,
withName: "file", fileName: "", mimeType: "image/jpeg")
...
Here are the extremely handy functions used above...
func checkedImageDirectoryStringPath()->String {
// create/check OUR OWN IMAGE DIRECTORY for use of this app.
let paths = NSSearchPathForDirectoriesInDomains(
.documentDirectory, .userDomainMask, true)
if paths.count < 1 {
print("some sort of disaster finding the our Image Directory - giving up")
return "x"
// any return will lead to disaster, so just do that
// (it will then gracefully fail when you "try" to write etc)
}
let docDirPath: String = paths.first!
let ourDirectoryPath = docDirPath.appending("/YourCompanyName")
// so simply makes a directory called "YourCompanyName"
// which will be there for all time, for your use
var ocb: ObjCBool = true
let exists = FileManager.default.fileExists(
atPath: ourDirectoryPath, isDirectory: &ocb)
if !exists {
do {
try FileManager.default.createDirectory(
atPath: ourDirectoryPath,
withIntermediateDirectories: false,
attributes: nil)
print("we did create our Image Directory, for the first time.")
// never need to again
return ourDirectoryPath
}
catch {
print(error.localizedDescription)
print("disaster trying to make our Image Directory?")
return "x"
// any return will lead to disaster, so just do that
}
}
else {
// already exists, as usual.
return ourDirectoryPath
}
}
and
func randomNameString(length: Int = 7)->String{
enum s {
static let c = Array("abcdefghjklmnpqrstuvwxyz12345789".characters)
static let k = UInt32(c.count)
}
var result = [Character](repeating: "a", count: length)
for i in 0..<length {
let r = Int(arc4random_uniform(s.k))
result[i] = s.c[r]
}
return String(result)
}
and
func devCheckExists(fullPath: String) {
var ocb: ObjCBool = false
let itExists = FileManager.default.fileExists(atPath: fullPath, isDirectory: &ocb)
if !itExists {
// alert developer. processes will fail at next step
print("\n\nDOES NOT EXIST\n\(fullPath)\n\n")
}
}
This is working for me and I think is a fast and clean way to do it.
Swift 5.0
let fileManager = NSFileManager.defaultManager()
let urls = fileManager.URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)
let documentDirectory = urls[0] as NSURL
print(documentDirectory)
let currentDate = NSDate()
let dateFormatter = NSDateFormatter()
dateFormatter.dateStyle = .NoStyle
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let convertedDate = dateFormatter.stringFromDate(currentDate)
let imageURL = documentDirectory.URLByAppendingPathComponent(convertedDate)
let imageData = try? Data(contentsOf: imageUrl)
let image = UIImage(data: imageData!)
Where "imageUrl" is the value of your imageURL from documents folder. And "image" is the resulting image you can use anywhere you need.
1.cell.image.sd_setShowActivityIndicatorView(true)
2.cell.image.sd_setIndicatorStyle(.gray)
3.cell.image.image = UIImage(contentsOfFile: urlString!)