I have an MKV file with HEVC video and OPUS audio. It plays great in all players. The problem is that I need it to be streamable. When VLC plays an MKV from the web, it first downloads it and then plays it.
So is there any way to put h.265 and opus in the mp4 container with the moov atom at the beginning of the mp4 file, so that it can start playing without needing to download the whole file?
I tried to do that with several programs, but without success. When using cloudconvert.com I get the error "Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument".