I'm creating narrated mp4 (x264+aac) videos for books. Each video has just the book's cover as the background.
I wonder what would be the most effective way to create such videos with ffmpeg?
I've tried using framerate of 1fps and that created small videos, but there were problems seeking in the video, and some video playing libraries for web browsers got confused with such videos.
Do you have any recommendations for creating small mp4 videos with just 1 static frame?