writeVideo records double the first frame and doesn't play last frame in VLS

Hi everyone,

I'm using writeVideo to save a simple animation. However I encounter two annoying problems: for one, the first frame is shown for two seconds in VLC, for a frame rate of 1 which works properly for other frames. Secondly, VLC stops playback at the second-to-last frame. I can manually drag it to the last frame, but that's not the point. Any ideas? See code below.

vidcounter = counter();
vid = VideoWriter("visualization test.mp4","MPEG-4");
vid.FrameRate = 1;
open(vid)

fig = figure;
fig.Position = [0 60 800 600];
tlo = tiledlayout(2,2,"TileSpacing","compact",Parent=fig);
set(fig,"Visible","on")

for CN = 1:5 % Loop through folders (Linewidths)

    p1 = nexttile(tlo, 1);
    surf(rand(5),'EdgeColor','none')

    p2 = nexttile(tlo, 2);
    surf(rand(5),'EdgeColor','none')

    p3 = nexttile(tlo, 3);
    surf(rand(5),'EdgeColor','none')

    p4 = nexttile(tlo, 4);
    surf(rand(5),'EdgeColor','none')

    frame = getframe(fig)
    writeVideo(vid, frame)
    vidcounter.countUp;
end

% writeVideo(vid, frame) % I can circumvent the second issue by duplicating
                         % the last frame, but it's not a real solution
close(vid)

[Gayathri]

The video plays correctly in other video players, so the provided code appears to be fine.

[Vitek Stepien]

Thanks for the feedback @Gayathri, I confess I didn't check any other players.