[LAU] ffmpeg video creation issue

Hey hey,
when creating videos with ffmpeg, using a still image, I always end up with video files much longer than the audio content. This is the commandline I use:
ffmpeg -loop 1 -framerate 1 -i image.jpg -i audio.wav -c:v libx264 -tune stillimage -profile:v main -level 3.1 -crf 18 -c:a aac -shortest -pix_fmt yuv420p video.mp4

Is there something wrong with it? Can someone suggest a fix?

TIA and best wishes,

Jeanette

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