When you send us the raw video Bytes, the video should be less than 50 megabytes.
You don't need to submit HD or 4K quality streams for video moderation to work. 240p quality is usually enough and will work well, while saving bandwidth costs.
Just like images, videos should be at least 50 pixels in width or height. Videos that are smaller might be rejected.
The Sequential API requires videos to be less than 60 seconds long.
The Continuous API works with longer videos. There currently is a timeout built-in that will stop any moderation task after 15 minutes. You can override this setting to up to 1 hour. If you need longer moderation periods please get in touch.