video encoding capability

[ll1]

I capture 3-video from 3 usb camera，and encode each of them to format h264, then save to the sd card，I want to get video processing capacity of imx6 or imx8. I know imx6，totall encoding frame rate is 720@60fps, so if 3-video from 3 usb camera, the frame rate of encoding each stream is 2*30fps/3=20fps？

[joanxie]

for  imx6, total encoding is 1080p@30,

and 2x720p@30, for 3 streaming, depends on what resolution you need,

3x frame rate x resolution < 1920X1080