Lightworks is a professional non-linear editing system (NLE) for editing and mastering digital video in various formats, including 2K and 4K resolutions, and television in PAL, NTSC, and high-definition formats. It is officially stated that MP4 is supported by Lightworks. However, many guys have found it painful experience to import H.265/HEVC to Lightworks and you may also encounter Lightworks MP4 and MKV file importing problems like this:
