Just a pic with music

I’m trying to add a music with only one picture.
In the playlist I have added the pic and the audio files, then moved the picture on the video timeline then moved the music on the audio timeline. I have extended my picture on the full lenght like the music duration, but when I export (in HEVC) the video result with audio only and there is not my picture.
Help please, a tutorial (video or picture step-by-step) would be great for me.

Be specific. How did you setup HEVC? Is hardware encoding turned on? How do you know your picture is not there?