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Mon Dec 1 15:39:35 PST 2014


all. (Again, except intra frame case)

Assume YUV420 format, then 12 bits/ pixel

720p    : 41,472,000 bytes = 331776000 bits
1280p   : 93,312,000 bytes = 746496000 bits

bpp     compression ratio       Mbps/720p               Mbps/1080p
0.01    1/1200                0.27 Mbps (270Kbps)     0.7 Mbps (720 Kbps)
0.05    1/240                  1.35 Mbps                     3.6 Mbps
0.1     1/120                    2.7 Mbps                     7.2 Mbps
0.2     1/60                     5.4 Mbps                    14.5 Mbps
0.4     1/30                    10.8 Mbps                    29.1 Mbps
<====== WE DON'T CARE THIS!
1.0     1/12                      27 Mbps                      72.9 Mbps
<====== WE DON'T CARE THIS!

I believe 0.05 bpp ~ 0.2 bpp will be our forever target for 720p and 1080p
video delivery on web.

Also, if possible I hope we use 'Mbps' for x-axis (bit rate) instead of bpp.

Thanks!
Yushin

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