VideoFrameToWriteableBitmap. VideoFrameToWriteableBitmap is a utility that facilitates the decoding of raw video frames (H.264, MJPEG, and more) and renders them into a WriteableBitmap within a WinUI application using FFmpeg.AutoGen version 7.0 (FFmpeg 7.0 dlls are required). Useful for scenarios like decoding frames from an RTSP stream is required.