Stretch 4:3 to 16:9 on Roku

Hi

Would it be possible to make the Roku auto Stretch 4:3 to 16:9 (Based on a setting)
Most of my TV collection is Classic TV and, of course, is filmed in 4:3 aspect ratio.

Neither of my UHDs do this.

My cable box can and does detect 4:3 and stretches it to 16:9

Don't know how hard that is to do but many free android media player apps do this..

Would be really Slick and nice for most folks that have any size TV collection.

Thanks