Error while exporting animation

Question

When trying to export a video in the following manner

anim = ListAnimate[Table[Graphics[Rectangle[]], {j, 10}]]

Export["anim.mp4", anim, "FrameRate" -> 60, 
 ImageResolution -> 800, Antialiasing -> True]

where anim is just an example. The code is inspired by this answer, I get the following error message

"FrameRate" is working fine, but I also tried to add the " " to ImageResolution and Antialiasing, with no success. Any idea why, and how to solve this?

I'm using Mathematica 12.1 on Windows 10.

Answer 1

The allowed options for Export to mp4 are

But your command is

Export["anim.mp4", anim, "FrameRate" -> 60, 
 ImageResolution -> 800, Antialiasing -> True]

Therefore 2 of the options you used do not apply to mp4. These are ImageResolution and Antialiasing. That is why you get the errors.

If you remove these options then it works.

V 12.1 on windows,

reference https://reference.wolfram.com/language/ref/format/MP4.html