I can't answer your question but when I'm watching Now TV a streaming quality number will pop up briefly in the top right hand corner of my TV, too brief to note and no indication what it actually means.
Yeah, like you, I'm stumped.
Can't remember the exact figures off the top of my head because i don't own a Smart TV with the inbuilt NowTV App.
But from a rough guide 7381 is 1080p (HD Boost Pass only) which should be on both Boxsets and live TV (subject to the content has been 1080p HD encoded).
Figure 4800 (can't remember the exact number) is 720p with a non Boost Pass again both Boxsets and live TV.
Where figure of 128 is either SD or the stream is ramping up to full bit rate.
I am sure somebody who has a suitable device that offers the bit rate information button will confirm the actual numbers involved.
I only use a Boost Pass nowdays and from me using my Youview Box on the rare occasions i believe a figure of 7831 if you press the info button on the remote confirms it's 1080p.
Where i see 7813 on both Live TV and Boxsets (where content has been encoded to 1080p).
Because i haven't used a NowTV Standard Pass in nearly a year now since Boost was introduced i can't remember fully the other exact figures for 720p and SD.
There is a couple of threads talked about this in the past (you just need to find them via the Community search feature).
@allanc Hi mate, I was using the app on my Sony 4k tv. I have a Nowtv stick which connects wirelessly at 170Mbs (according to the router). The TV is connected at 500+Mbs, (according to the router) so I thought that would be better. The stick says that the connection is good at 53Mb, it is a Plusnet superfast BB.
I have a few things connected to the system, perhaps I should turn them all off?