Divisible by 16?

[vid83]

When encoding videos, how do I know if my dimensions needs to be divisible by 16?

My final video needs to be 16:9 640 x 360 1:1 PAR for YouTube. Is there a way to find out what dimensions gives me both width and height that are divisible by 16 where the aspect ratio is 16:9 other than tedious calculations?

[JohnnyMalaria]

For 1:1 PAR, the following dimensions are 16:9 and multiples of 16:

256 x 144
512 x 288
768 x 432
1024 x 576

(keep adding 256 x 144 to get higher resolutions)

You can get close (e.g., 16.2 : 9) with other dimensions such as:

720 x 400

[jagabo]

16:9 x 16 x 1 = 256:144
16:9 x 16 x 2 = 512:288
16:9 x 16 x 3 = 768:432
16:9 x 16 x 4 = 1024:576
16:9 x 16 x 5 = 1280:720
...