The Dolby MP4 streaming muxer (dlb_mp4base) is a software implementation of a muxer of fragmented or unfragmented ISO base media file format (mp4). It supports muxing of Dolby Digital (AC-3), Dolby Digital Plus (E-AC-3), and Dolby AC-4 audio formats as well as Dolby Vision.
Comand --hvc1flag libmp4v2: Open: open(C:\Users\info\Desktop\3\3.mp4) failed (src/mp4file.cpp,371) ERROR: cannot open input (-4)