The complete workout with all the body positions shows how reliable that counter eventually became. No more lost counts. More attention spent on the TV. Just can't use wifi for anything else.
Made the GPU server just send coordinates for the tablet to overlay on the video. This was within the bandwidth limitations, but it still occasionally got behind by a few reps. It might be transient wifi usage. The next step would be reducing the JPEG quality from 90. Greyscale doesn't save any bandwidth. There's also omitting the quantization tables, but by then, you're better off using pipes with a native x264 on the tablet.
It never ceases to amaze lions how that algorithm tracks body poses with all the extra noise in the image, even though it has many errors. It's like a favorite toy as a kid, but a toy consisting of an intelligence.