Sharing a video via a PHAsset

Background:

I have an app written in react-native that uses the react-native-share package. I've forked this package as there is an issue where a downloaded image or video won't share from a placeholder asset (PHAsset) URL (e.g. ph://[media-id])

I've had some partial success with the code below and Images now work. Videos are proving a little more tricky. I can take the ph:// URL and get the asset which results in a file:// URL that works ONLY when sharing via airdrop. The URL resolves and I get the MP4 file on my desktop...great!

The Problem:

However, if I try and share the same file:// URL to a message or email I just see the link itself.

Possible solution:

I'm assuming I need to resolve that video asset to an NSData object in the Obj-c and then send the file itself back for the share component to handle (like the image one does) but I'm not too great with Obj-C so would appreciate some help! For videos, the file is always an mp4 file.

Here's my code: (I'm passing the ph:// URL to the native side...)

...
if([URL.scheme.lowercaseString isEqualToString:@"ph"]) {
    NSString *assetIdentifier = [urlsArray[i] stringByReplacingOccurrencesOfString: @"ph://" withString: @""];
    PHFetchResult *fetchResult = [PHAssetCollection fetchAssetCollectionsWithLocalIdentifiers: @[assetIdentifier] options:nil];
    PHAsset *asset = fetchResult.firstObject;

    PHImageRequestOptions *options = [[PHImageRequestOptions alloc] init];
    options.synchronous = YES;
    options.version = PHImageRequestOptionsVersionCurrent;
    options.deliveryMode = PHImageRequestOptionsDeliveryModeOpportunistic;
    options.resizeMode = PHImageRequestOptionsResizeModeNone;

    PHVideoRequestOptions *options2 = [[PHVideoRequestOptions alloc] init];
    options2.networkAccessAllowed = YES;
    options2.deliveryMode = PHVideoRequestOptionsDeliveryModeHighQualityFormat;
    options2.version = PHVideoRequestOptionsVersionCurrent;

    NSString __block *url = @"";

    if (asset){
        switch(asset.mediaType) {
            case PHAssetMediaTypeVideo: {
                //*** THIS IS THE PROBLEMATIC AREA ***
                [[PHImageManager defaultManager] requestAVAssetForVideo:asset options:options2 resultHandler:^(AVAsset * _Nullable asset, AVAudioMix * _Nullable audioMix, NSDictionary * _Nullable info) {
                    AVURLAsset *urlAsset = (AVURLAsset*)asset;

                    url = [[urlAsset URL] absoluteString];

                    [items addObject: url];  //items is passed over to the share handler
                    dispatch_semaphore_signal(semaphore);   //added to counter-act the fact requestAVAssetForVideo is asynchronous   
                }];
            break;
            }
            case PHAssetMediaTypeImage: {
                //*** THIS SHARES IMAGES AS EXPECTED ***
                [[PHImageManager defaultManager] requestImageDataForAsset:asset options:options resultHandler:^(NSData * _Nullable imageData, NSString * _Nullable dataUTI, UIImageOrientation orientation, NSDictionary * _Nullable info)
                {
                    [items addObject:imageData];   //items is passed over to the share handler
                    dispatch_semaphore_signal(semaphore);    //added to counter-act the fact requestAVAssetForVideo is asynchronous
                }];
                break;
            }
            default: {
                RCTLogError(@"Asset type can't be shared");
                return;
            }
        }     
    }
} 
...