The maximum file size allowed for all media (photos, videos or voice messages) to be sent or forwarded through WhatsApp is 16 MB on all platforms. On most phones, this will equal from about 90 seconds to 3 minutes of video.
For Status, you can share a video with a maximum duration of 30 seconds. At this time, it's not possible to share longer videos to Status.Which means on status, the file size would be smaller than a regular 16 MB.
1080px * 1920px is the recommended size for WhatsApp Status. The WhatsApp Status image Size is expected to be sized as at least 400 px wide and 150 px height.