invalid frame size while using ffmpeg

Question

I am trying scale and convert a video:

ffmpeg -i input.mkv -s 1920×1080 output.mp4

But every time it shows error (Windows):

Invalid frame size: 1920×1080.

or on Linux:

Invalid frame size: 1920×1080.

Answer 1

Use x, not ×.

• Incorrect: 1920×1080
• Correct: 1920x1080