bandwidth required for live video resolution

[gavin han]

Hi,

As per below table,

1280 x 720@30 fps (720p30) => does 1280 represents bandwidth? i.e. 1280K?

Live video resolutions (encode/decode)

• 176 x 144@30 fps (QCIF) • 352 x 288@30 fps (CIF) • 512 x 288@30 fps (w288p) • 576 x 448@30 fps (448p) • 768 x 448@30 fps (w448p) • 704 x 576@30 fps (4CIF) • 1024 x 576@30 fps (w576p) • 640 x 480@30 fps (VGA) • 800 x 600@30 fps (SVGA) • 1024 x 768@30 fps (XGA) • 1280 x 1024@30 fps (SXGA) • 1280 x 720@30 fps (720p30)

• 1280 x 768@30 fps (WXGA) • 1920 x 1080@30 fps (1080p30)* • 1440 x 900@30 fps (WXGA+)* • 1680 x 1050@30 fps (WSXGA+)* • 1600 x 1200@30 fps (UXGA)* • 512 x 288@60 fps (w288p60)* • 768 x 448@60 fps (w448p60)* • 1024x576@60 fps (w576p60)* • 1280x720@60 fps (720p60) * Requires premium resolution option

[Andrew Vasel]

I would think it represents screen resolution... not bandwidth.

[Martin Koch]

Yes, Andrews is right, this overview just lists the supported resolutions.

The TC4.2 Admin guide (page 78) shows a bandwith / resolution matrix, which is also

dependent on the "Optimal definition profile".

http://www.tandberg.com/support/dl.php?id=1515&dir=User_Manuals&fn=profile_c90_and_codec_c90_administrator_guide_tc42.pdf

Other endpoints/software version and infrastructure devices (like the mcu) might have different mappings.

Optimal definition profiles for systems supporting 1080p

               w288p30 w448p30 w576p30 720p30 1080p30

Normal 256 kbit/s 512 kbit/s 768 kbit/s 1152 kbit/s 2560 kbit/s

Medium 128 kbit/s 384 kbit/s 512 kbit/s 1152 kbit/s 1920 kbit/s

High 128 kbit/s 256 kbit/s 512 kbit/s 768 kbit/s 1472 kbit/s

Optimal definition profiles for systems supporting 720p60

                  w144p60 w288p60 w448p60 w576p60 720p60

Normal 128 kbit/s 512 kbit/s 1152 kbit/s 1472 kbit/s 2240 kbit/s

Medium 128 kbit/s 384 kbit/s 768 kbit/s 1152 kbit/s 1920 kbit/s

High 128 kbit/s 256 kbit/s 512 kbit/s 768 kbit/s 1152 kbit/s