What cause this? How can I avoid it? Some time ago it also happend and a few days later I tried again and suddenly it worked. Now I have the same problem!
Hi and welcome to the forum.
Which variant - basic, Plus or Premium and version number of Movie Edit Pro (MEP) are you using as found under Help, About?
Assuming you are using the programs internal uploader, I would recommend you export the video, in the appropriate format, and use Youtubes own uploader - this also gives you an opportunity to check the video again..
I do this with the most current version of MEP as well to avoid issues.
Youtube have a habit of changing the way the uploading works internally, which stopped older versions of MEP uploading correctly.
John EB
Forum Moderator
I have Movie Edit Pro Plus 2019
Hi
. . . . Movie Edit Pro Plus 2019 . . . .
AFAIK Youtube have not change the uploader software since 2019 was released, so it should be OK using the internal uploader, there may have been an issue at their end if you cannot replicate this.
John EB