EXFO EXpert IPTV Test Tools (FTB-200v2) - Manual (Page 53)

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(PSNR) value for the frame can be computed by
PSNR
br
= ‐10 log
10
MSE
br
.
Figure 2‐4 shows the estimated PSNR value on coding bitrate for MPEG‐2 encoded video.
Figure 2‐4
Estimated
PSNR on
Coding Bitrate
for Standard
Definition
MPEG‐2 Video
at 30 Frames
per Second
The following examples illustrate the impact of the coding bitrate on video quality. Both
images show the same frame from a video sequence encoded with MPEG‐2 at a resolution of
720x480, at 30 frames per second. In Figure 2‐5 the sequence was encoded at a bitrate of
5000 Kbps (610KB/s).