Which is easier to animate with vector or bitmap
also should i animate using costumes or backdrops

Vector.

It is better to animate with sprite costumes, as the sprites can be easily moved around and used.

CephalonSimaris wrote:

Which is easier to animate with vector or bitmap
also should i animate using costumes or backdrops

Always animate with sprites.

Either bitmap or vector makes fine animations. The techniques are different and the visual appearance is different, so you can't really substitute one for the other.

Neither one is any easier than the other once you have learned both of them.

As a general rule, all games supposed to look like Gameboy or old Nintendo games should be bitmap animations.

Games supposed to look like Flash games should be vector animations.

CephalonSimaris wrote:

Which is easier to animate with vector or bitmap
also should i animate using costumes or backdrops

If you want pixel art or retro sprites, it's better to use bitmap. Otherwise, I would use vector. Bitmap seems more glitchy.

CephalonSimaris wrote:

Which is easier to animate with vector or bitmap
also should i animate using costumes or backdrops

The easier one to do is Vector and you should animate using costumes