出现了同样的问题.看起来React Native不会为带有资源库URI的视频返回正确的流.图片似乎工作正常.不过，在提交问题之前，我需要更深入地研究.

Had the same issue. Looks like React Native does not return the correct stream for videos with asset library URIs. Pictures seem to work fine. I would need to dig deeper before submitting an issue though.

我建议您看看 react-native-fetch-blob 改进的fetch polyfill具有Blob支持.此实现可以很好地处理相机胶卷中的视频.另外，使用此模块所需的更改很小(包括polyfill，使用RNFetchBlob.wrap包装URI).

I suggest you take a look at react-native-fetch-blob, which provides an improved fetch polyfill with Blob support. This implementation handles videos from the camera roll just fine. Also, the changes needed to use this module are minimal (include the polyfill, wrap URI with RNFetchBlob.wrap).