Add a fix to discover local files that may be referenced off of an otio exported from a different machine with different root file paths.

Author: vade

Sources/OpenTimelineIO-AVFoundation/OpenTimelineIO-Extensions/ExternalReference.swift

@@ -81,8 +81,23 @@ extension ExternalReference
                     return self.tryLoadAssetAtResolvedURL(url: sourceURL)
                 }
             }
+            
+            // edge case -
+            // if a OTIO file was packaged with media but paths werent linked, we should check CWD for the file
+            // as a last case attempt.
+            if let filename = path.components(separatedBy: "/").last
+            {
+                let newFileURL = baseURL.appending(component: filename)
+                
+                return self.tryLoadAssetAtResolvedURL(url: newFileURL)
+            }
+            
+            
         }
 
+       
+        
+        
         let missingMediaURL = Bundle.main.url(forResource: "MediaNotFound", withExtension: "mp4")!
 
         return AVURLAsset(url: missingMediaURL)
@@ -122,12 +137,12 @@ extension ExternalReference
 
         if supported
         {
-            return AVURLAsset(url: url)
+            return AVURLAsset(url: url, options: [AVURLAssetPreferPreciseDurationAndTimingKey : true])
         }
 
         let notSupportedMedia = Bundle.main.url(forResource: "MediaNotSupported", withExtension: "mp4")!
 
-        return AVURLAsset(url: notSupportedMedia)
+        return AVURLAsset(url: notSupportedMedia, options: [AVURLAssetPreferPreciseDurationAndTimingKey : true])
 
     }