I'm trying to figure it out, but can't find any useful information. I only found this:
PHAssetResourceManager.defaultManager().writeDataForAssetResource(assetRes,
toFile: fileURL, options: nil, completionHandler:
{
// Video file has been written to path specified via fileURL
}
but I'm ashamed to say I have no idea how to play it out. I've created a UIImagePickerController and loaded an Image from the Camera Roll.
On
Swift 5
func videoUrlForLivePhotoAsset(asset: PHAsset, completionHandler: @escaping (_ result: URL?) -> Void) {
print("videoUrlForLivePhotoAsset: \(asset)")
let options : PHLivePhotoRequestOptions = PHLivePhotoRequestOptions.init()
options.deliveryMode = .fastFormat
options.isNetworkAccessAllowed = true
PHImageManager.default().requestLivePhoto(for: asset, targetSize: UIScreen.main.bounds.size, contentMode: .default, options: options) { (livePhoto, info) in
if livePhoto != nil {
let assetResources : [PHAssetResource] = PHAssetResource.assetResources(for: livePhoto!)
var videoResource : PHAssetResource?
for resource in assetResources {
if resource.type == .pairedVideo {
videoResource = resource
break
}
}
guard let photoDir = self.generateFolderForLivePhotoResources() else {
return
}
print("videoResource: \(videoResource)")
if videoResource != nil {
self.saveAssetResource(resource: videoResource!, inDirectory: photoDir, buffer: nil, maybeError: nil) { (fileUrl) in
completionHandler(fileUrl)
}
}
} else {
completionHandler(nil)
}
}
}
func saveAssetResource(
resource: PHAssetResource,
inDirectory: NSURL,
buffer: NSMutableData?, maybeError: Error?, completionHandler: @escaping (_ result: URL?) -> Void) {
guard maybeError == nil else {
print("Could not request data for resource: \(resource), error: \(String(describing: maybeError))")
return
}
let maybeExt = UTTypeCopyPreferredTagWithClass(
resource.uniformTypeIdentifier as CFString,
kUTTagClassFilenameExtension
)?.takeRetainedValue()
guard let ext = maybeExt else {
return
}
guard var fileUrl = inDirectory.appendingPathComponent(NSUUID().uuidString) else {
print("file url error")
return
}
fileUrl = fileUrl.appendingPathExtension(ext as String)
if let buffer = buffer, buffer.write(to: fileUrl, atomically: true) {
print("Saved resource form buffer \(resource) to filepath \(String(describing: fileUrl))")
completionHandler(fileUrl)
} else {
PHAssetResourceManager.default().writeData(for: resource, toFile: fileUrl, options: nil) { (error) in
print("Saved resource directly \(resource) to filepath \(String(describing: fileUrl))")
if error == nil {
completionHandler(fileUrl)
} else {
completionHandler(nil)
}
}
}
}
func generateFolderForLivePhotoResources() -> NSURL? {
let photoDir = NSURL(
// NB: Files in NSTemporaryDirectory() are automatically cleaned up by the OS
fileURLWithPath: NSTemporaryDirectory(),
isDirectory: true
).appendingPathComponent(NSUUID().uuidString)
let fileManager = FileManager()
// we need to specify type as ()? as otherwise the compiler generates a warning
let success : ()? = try? fileManager.createDirectory(
at: photoDir!,
withIntermediateDirectories: true,
attributes: nil
)
return success != nil ? photoDir! as NSURL : nil
}
Invoke with the following:
let asset = PHAsset.init()
self.videoUrlForLivePhotoAsset(asset: asset!) { (url) in
print("url: \(url)")
}
Note: You need to clean up the Temp and Documents directory, and remove the files.
On
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
let phAsset = info[.phAsset] as? PHAsset
imagePickerController.dismiss(animated: true, completion: nil)
let style = phAsset?.playbackStyle
if(style != .livePhoto) {
print("This is not a live photo")
return
}
let filePath = NSTemporaryDirectory() + String(format: "%.0f", NSDate().timeIntervalSince1970) + "_.mov"
let fileURL = NSURL(fileURLWithPath: filePath)
let options = PHLivePhotoRequestOptions()
options.deliveryMode = .fastFormat
options.isNetworkAccessAllowed = true
PHImageManager.default().requestLivePhoto(for: phAsset!, targetSize: CGSize(width: 1920, height: 1080), contentMode: PHImageContentMode.default, options: options) { livePhoto, info in
if((livePhoto) != nil) {
let assetResources = PHAssetResource.assetResources(for: livePhoto!)
var videoResource : PHAssetResource?
for resources in assetResources {
if(resources.type == .pairedVideo) {
videoResource = resources
break
}
}
guard let videoResource = videoResource else {
fatalError("video resource is nil")
}
PHAssetResourceManager.default().writeData(for: videoResource, toFile: fileURL as URL, options: nil) { error in
let avAsset : AVAsset = AVAsset(url: fileURL as URL)
DispatchQueue.main.async { [self] in
// Whatever you do using fileURL or avAsset.
}
}
}
}
}
import Photos
import MobileCoreServices
// <UIImagePickerControllerDelegate, UINavigationControllerDelegate>
@IBAction func showImagePicker(sender: UIButton) {
let picker = UIImagePickerController()
picker.delegate = self;
picker.allowsEditing = false;
picker.sourceType = .photoLibrary;
picker.mediaTypes = [kUTTypeLivePhoto as String, kUTTypeImage as String];
present(picker, animated: true, completion: nil);
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
guard
let livePhoto = info[UIImagePickerControllerLivePhoto] as? PHLivePhoto,
let photoDir = generateFolderForLivePhotoResources()
else {
return;
}
let assetResources = PHAssetResource.assetResources(for: livePhoto)
for resource in assetResources {
// SAVE FROM BUFFER
// let buffer = NSMutableData()
// PHAssetResourceManager.default().requestData(for: resource, options: nil, dataReceivedHandler: { (chunk) in
// buffer.append(chunk)
// }, completionHandler: {[weak self] error in
// self?.saveAssetResource(resource: resource, inDirectory: photoDir, buffer: buffer, maybeError: error)
// })
// SAVE DIRECTLY
saveAssetResource(resource: resource, inDirectory: photoDir, buffer: nil, maybeError: nil)
}
picker.dismiss(animated: true) {}
}
func saveAssetResource(
resource: PHAssetResource,
inDirectory: NSURL,
buffer: NSMutableData?, maybeError: Error?
) -> Void {
guard maybeError == nil else {
print("Could not request data for resource: \(resource), error: \(String(describing: maybeError))")
return
}
let maybeExt = UTTypeCopyPreferredTagWithClass(
resource.uniformTypeIdentifier as CFString,
kUTTagClassFilenameExtension
)?.takeRetainedValue()
guard let ext = maybeExt else {
return
}
guard var fileUrl = inDirectory.appendingPathComponent(NSUUID().uuidString) else {
print("file url error")
return
}
fileUrl = fileUrl.appendingPathExtension(ext as String)
if let buffer = buffer, buffer.write(to: fileUrl, atomically: true) {
print("Saved resource form buffer \(resource) to filepath \(String(describing: fileUrl))")
} else {
PHAssetResourceManager.default().writeData(for: resource, toFile: fileUrl, options: nil) { (error) in
print("Saved resource directly \(resource) to filepath \(String(describing: fileUrl))")
}
}
}
func generateFolderForLivePhotoResources() -> NSURL? {
let photoDir = NSURL(
// NB: Files in NSTemporaryDirectory() are automatically cleaned up by the OS
fileURLWithPath: NSTemporaryDirectory(),
isDirectory: true
).appendingPathComponent(NSUUID().uuidString)
let fileManager = FileManager()
// we need to specify type as ()? as otherwise the compiler generates a warning
let success : ()? = try? fileManager.createDirectory(
at: photoDir!,
withIntermediateDirectories: true,
attributes: nil
)
return success != nil ? photoDir! as NSURL : nil
}
In depth tutorial here Live Photo API on iOS
On
The question is a little confusing
First, If you want to pick live photo and play live photo.I recommend you use the Photos Framework instead of UIImagePickerController. This way you can fetch the asset and have more control. Then you can play the live photo as mov or the muted version with PHLivePhotoView by setting the startPlayback(with:) to hint or full.
You can refer the code here :
Second, if you want convert live photo to mov, the code you pasted will work, and if you want to play mov directly, you may want use AVPlayer
Plus, WWDC provides Example app using Photos framework
Use this code to get the video from live photo:
Basically what you have to do is that you first need to fetch the
PHLivePhotoobject from yourPHAsset. After that, you will have to traverse all the asset resources within your live photo and check if it is of typePHAssetResourceTypePairedVideo.If yes, you got your video. Now you will require to save it to some temporary directory as I did here and use this file for whatever purpose you may have.
To Play this video, you can use the following code:
Feel free to ask if you need any clarification.
P.S.- I made a few changes in this method to remove dependency of my application's code so the above code is untested, however I feel it should work as expected.