$ ffmpeg -loop 1 -i input_image.png -i input_audio.wav -c:v libx264 -crf 23 -vf "fps=30,format=yuv420p" -c:a aac -shortest output_video.mp4
$ ffmpeg -loop 1 -i input_image.png -i input_audio.wav -c:v libx264 -crf 23 -vf "fps=30,format=yuv420p" -c:a aac -shortest output_video.mp4