mediastream_recording library Null safety
- The interface represents events associated with a Blob. These blobs are typically, but not necessarily, associated with media content.
- The interface of the MediaStream Recording API provides functionality to easily record media. It is created using the MediaRecorder() constructor.
- The interface represents errors returned by the MediaStream Recording API. It is an Event object that encapsulates a reference to a DOMException describing the error that occurred.