Sequential still frames to video
ffmpeg -r 60 -f image2 -s 1920x1080 -i pic%04d.png -vcodec libx264 -crf 25 -pix_fmt yuv420p test.mp4
Where the %04d means that zeros will be padded until the length of the string is 4 i.e 0001…0020…0030…2000 and so on. If no padding is needed use something similar to pic%d.png or %d.png.
Resize video
scale is horizontal width. :-1 maintains ratio.
ffmpeg -i 2022-08_Mike-Dave.mp4 -filter:v scale=1920:-1 -c:a copy 2022-08_Mike-Dave_1080.mp4