MOS value for Foreman video remains low

[GoogleCodeExporter]

What steps will reproduce the problem?
1. VT client -c VT.conf
2. VT server
3.

What is the expected output? What do you see instead?
Normal output

What version of the product are you using? On what operating system?
Video-Tester .2 and Fedora 16

Please provide any additional information below.
I have been attempting to find the ideal bit rate for testing forman_cif.264 to 
receive a MOS of over 2 (preferably >3). I thought it was a network problem, 
but even when I run VT server on my loopback, I received a score of 1.0 - 1.3. 
I have used a bit rate ranging from 128 - 548, to no avail. Is this an encoding 
bit rate issue, should I continue to push more bps to this? Or is it something 
different altogether. 

My goal is to benchmark several videos with my test bed prior deploying my 
experiment on my topology. Ultimately to see the affect it has on video 
streaming. I am using akiyo, foreman, and football.

Original issue reported on code.google.com by rob.udec...@gmail.com on 25 Mar 2014 at 3:37

[GoogleCodeExporter]

The MOS scale implemented here is a slightly coarse mapping from PSNR (see this 
paper: http://www.eecs.tu-berlin.de/fileadmin/fg112/Papers/elsevier.pdf, page 
8, table 2). The SSIM index works much better than PSNR. Maybe you could find 
some literature that describes a method to map SSIM to MOS and help to extend 
Video Tester with new metrics. ;-)

Anyway, working with MOS from PSNR, if you are using the loopback interface and 
the values are still low, the only thing you can do is to push more bps. But my 
suggestion would still be to move onto SSIM.

Original comment by i.uca...@gmail.com on 25 Mar 2014 at 10:06

[GoogleCodeExporter]

Original comment by i.uca...@gmail.com on 4 Sep 2014 at 3:52

• Changed state: Done