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Not sure if anyone can help but I'm struggling with creating or getting a thumbnail for a video file in my iOS app. I'm using a `PHPickerView` to show my gallery, I select a video and get a `PHPickerResult`, which has the `itemProvider` that i use to get a `nsUrl` . however if I try to do something like `AVAsset.assetWithURL(videoUrl)` then the asset doesn't seem to be recognized as a video, or readable. I have permissions enabled so I don't think it's that, and I'm able to get photos with the picker. looking for other ideas.

Looks like I figured it out. I guess I had to write the bytes to a temp url. I'm calling `writeToURL(tempUrl)` function before calling `AVAsset.assetWithURL(tempUrl)`