Any recommendations for a portable solution for the times it is necessary to feed NTSC downconverted video? I seem to recall seeing a recent post about a new small converter but I can't find it.
Battery powered and small are my main considerations.

This one is becoming popular with Steadicam ops.

Redbyte Design - Products DECIMATOR (http://www.redbytedesign.com/products-thedecimator.html)

Thats the one I was looking for, although I'm pretty impressed with the Black Magic miniature adapter for a bit more money. Need to look into SDI pass through from the box

Aja makes a small 12 volt powered unit

I use this Aja convertor to take the HD-SDI output of the camera and feed it into a small SD video wireless system.

HD10MD3 - AJA Video - Serial Digital Video Interface and Conversion (http://www.aja.com/products/converters/converters-hd-hd10md3.php)

Sad to say, it costs over $1K, though...