How to evaluate the development of your own HD player for live-stream?

Question

JW Player

The task is to evaluate the development of your own player for online HD live stream in all the latest browsers
. The reasons for this task are not known, it is clear that there are ready-made players and what could be the reason for your player is not clear ... but I have not encountered similar tasks in principle. I don't know what to expect and how to evaluate
. I estimate it at a long and expensive price: half a year - a year.
1. Help to estimate very approximately. month, half year, year. in man-hours days.
1.2. and for the occasion, add an open source player to full HD in livestream.
2. What difficulties may arise (generally, technical)
3. Help to suggest the reasons for the need for your own player? Is it really more expensive to buy?

Answer 1

The first thing that comes to mind is adult content, but still, why reinvent the wheel.