ffmpeg create video from single image

gistfile1.txt

# image.png: image file
# video.mp4: video file
# -t 5: video duration in seconds
# -crf 20: (optional) compression, higher value higher compression rate and lower video quality
# using -crf 0 (lossless) sometimes leads to glitches, use -crf 1 for best results

# note: the order of the arguments matter
ffmpeg -loop 1 -i image.png -t 5 -crf 20 -vcodec libx264 -pix_fmt yuv420p video.mp4