[artemave]

Yes, I am mac user. Should have made mentioned it in the post.

I downloaded your video, but it is just black screen all the way through.

[Tmmrn]

Well, what can I say? It's a standard h.264 video that plays in ffplay, vlc and mplayer.

Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv444p, 1512x800, 845 kb/s, 25 fps, 25 tbr, 16k tbn, 50 tbc