Start from base library version 2.9.0. Please remaining backward compatible.
Can be passed wx.createMediaContainer Create.
MediaContainer Audio and video processing container, which can be used for audio mixing and other operations
Detach the incoming video source from the track. Tracks are not automatically added to containers to be synthesized.
Add an audio or video track to the container
Remove an audio or video track from a container
Merge tracks in container and export video files
Destroy containers, release resources