No one I know has tested it at 120Mb/s.
We know a couple of things:
- there are two different drivers: THETA V and THETA UVC 4K
- Most people are using THETA UVC 4K as there are or were problems using THETA V
I think, but do not know for sure, that the THETA V driver puts less load on the CPU. Thus, I suspect that to get maximum bitrate, it’s better to use THETA V, not THETA UVC 4K. Unfortunately, we can’t get the THETA V driver to work consistently on Windows 10.
With a fast computer, you can start increasing the bitrate of the stream until it maxes out. I do not have a fast computer in my office right now because I moved my fast computer to my son who wanted to play some heavy PC game over the summer in competition.
With my weak system with UVC 4K, I tried:
- 10Mb bitrate failed
- 8Mb bitrate shows high dropped framerate
- 6Mb bitrate setting shows max of 3.7Mb bitrate with 80% dropped frames on average
- 4Mb bitrate setting shows average of 2.3Mb/sec (greater than 50% dropped packets)
- 3Mb/sec bitrate shows similar to above
- 2Mb/sec bitrate shows about 2Mb/sec actual throughput and 0% dropped frames
I suspect that problem here is UVC 4K blender, which is in beta.
A test of THETA V (not UVC 4K) on MPC-HC (not OBS) might yield better results.
Other tests that I am thinking of trying:
- trying from Mac with THETA V driver
- higher-end Windows 10 system with 6 cores and better graphics card
- Trying MPC-HC with THETA V
Update 11/7/2017 afternoon
I updated this article to show how to test MPC-HC with the RICOH THETA V driver. I have not tested the bitrate.