Black screen and no audio after export

today i finished editing a video but when i started exporting it, the screen was either black or white and there was no audio.
same thing if I tried to upload the draft of that project.
how can i solve?

Going to need a bit more information to really help.

First thing to check is to make sure you don’t have any filters on Output/Master. Filters here can block video and sound. If you have filters there, remove all of them. If you have filters there, you’ll see the funnel symbol.
shotcut_2020-08-03_20-48-30

Also check to make sure you have no filters on all tracks.
In this example, there is at least one filter on V2.
shotcut_2020-08-03_20-52-23

What screen “was either black or white” ? Shotcut’s preview screen, or the exported video?
What do you mean “upload the draft of that project”?

Other information that will help finding a solution:

  • Shotcut version (Click on Help, then About Shotcut) Latest version is here.
  • Operating System (Windows, Linux, Mac) 64bit or 32bit ?
  • Computer Specs
  • Source file specifications (resolution/FPS)

Did you change anything in the Export Windows in the Advanced? If so, then what did you change?