Hey Marcus,
I am sorry for the delay of this reply,
Ok i now get this error on frontend while trying to upload a video:
Step 1: Drag video into easysocial upload box
Step 2: nothing happens so i click share
Error: No video detected. Please upload a video or embed a video link to proceed.
I've tested this in your site, I unable to replicate this, because it detected what video I drag in the video form but it still hitting the same upload issue.
Then I checked back the log file from /httpdocs/media/com_easysocial/videos/68/a3f390d88e4c41f2747bfa2f1b5f87db.log , it still detected "Access is denied."
This log file is generate from this file php function ->
JoomlaFolder\administrator\components\com_easysocial\includes\ffmpeg\adapter.php LINE 575 , When the system try to pass the command to your ffmpeg to execute, between the process then hitting the "Access is denied".
I've checked again from your remote desktop "ffmpeg.exe" user permission, it seems like 'easysocialmedia' user do not have full access, especially the execute permission. But I am not familiar with the Windows server user permission regarding the 'special permissions', is it when I allow this 'special permission' so that user should have full control? Perhaps you can consult with your webhosting provider to temporary change this user have full control permission (include Read & execute) then reboot server again.
If after you done, it still can't able to upload video, I would recommend you to switch your server to use Linux server.