Я использую Microsoft Video API https://github.com/Microsoft/Cognitive-Video-Windows и запустите форму WPF с ключом подписки. Но после загрузки mp4 всего 2 МБ (5 секунд) он никогда не возвращает результат, а только со следующим статусом:
[22:23:29.247832]: [Motion Detection] Start motion detection
[22:23:29.268208]: [Motion Detection] Start uploading video
[22:23:33.763941]: [Motion Detection] Uploading video done
[22:23:34.421370]: [Motion Detection] Server status: Running, wait 20 seconds...
[22:23:56.411876]: [Motion Detection] Server status: Running, wait 20 seconds...
[22:24:16.897360]: [Motion Detection] Server status: Running, wait 20 seconds...
[22:24:37.101580]: [Motion Detection] Server status: Running, wait 20 seconds...
[22:24:57.593576]: [Motion Detection] Server status: Running, wait 20 seconds...