flutter 录制视频插件camera

flutter中提供的camera插件不仅可以实现拍照 相册选择的功能，还能实现录制视频。

Features: Display live camera preview in a widget. Snapshots can be captured and saved to a file. Record video. Add access to the image stream from Dart.

flutter 录制视频插件地址：https://pub.dev/packages/camera