'[mp4 @ 0000021f539be780] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly."

I have run this given code below and found the error written in title in command prompt

ffmpegDir = 'C:\ffmpeg'

cmd = ['"' fullfile(ffmpegDir, 'bin', 'ffmpeg.exe') '" -r 60 -i vid60fps640x480.h264 -vcodec copy vid60fps640x480.mp4 &'];

[status, message] = system(cmd)

vid = VideoReader('vid60fps640x480.mp4')

for k = 1:vid.NumFrames

image(read(vid, k));

drawnow;

end

Can anyone help me about this?