Hello Senior, I am junior movie encoder and I encode movie for some telegram channel in my country. Now I have a problem about the thumbnail of videos in uploading telegram channel. I encode with Adobe Premiere Pro 2018 and I also add thumbnails photo at the beginning of video for 2-4seconds. But that was not effect for me. As another way I use tageditor and it was not also effect😭😭😭. So please teach me some ways to add thumbnail to video that upload to telegram.