How to insert a picture or caption in a video for half a second?

Question

Video processing

Hello. The bottom line is this:
I upload videos to telegram. Telegram uses the cover from the beginning of the video. I need to put an inscription or a card at the beginning of the video for a split second so that the video preview looks beautiful. It doesn’t work through video editors, they have a very large rendering of each video. Tell me, maybe there is software that can put a cover or an inscription at the beginning of the video.

Answer 1

ffmpeg