how to check bandwidth?

[Mark McLeod]

We need to shoot for a video bandwidth maximum of roughly less than 5Mb/s.

The field limit is 7Mb/s, but

• The video has transmission overhead that isn't being measured
• The command packets for driving take ~1Mb/s
• Network Tables to send/receive values between the Dashboard and cRIO will take some of the bandwidth too.
• We need some breathing room to accommodate transmission spikes and variations

The default Dashboard already gives video bandwidth feedback on the screen as well as easy adjustment of resolution/fps/compression to immediately see what the effect is on the look of the video.

[BOSS]

We have vision currently and are using a LED ring we have the bandwidth around 2mbps we are running robot and the camera and see the targets well is this to good to be true? We are using Labview, the default FRC code for the camera, compression at 60, the 320 X240. Will this work at the competition?

[Mark McLeod]

That sounds good, and normal.
Last year we ran two cameras at a combined ~1Mb/s, so it's certainly possible.

It's the unconstrained, uncompressed, over resolution raw video stream that's really the problem bandwidth-wize.