hello I'm new in video editing... I made a 1 minute long video with effects and....
and when I render my file it shows half a second of my clip and a black screen after that
and sometimes it has a audio for that and sometimes it hasn't
how can I render my videos properly?

try this build (if your are on Windows) http://www.wcn.it/Kdenlive-20-08-Window ... taller.exe

if your are using Linux, please specify what distro and what version of kdenlive