Using the mythtv to record from a VCR

It seems that how one uses a WinTV PVR-250 to record from a VCR has changed since the last time I did it. Here's what I ended up doing, after temporarily killing mythbackend. I have my directv box plugged into the SVideo and stereo audio ports, while the VCR was attached by coax.

# list the allowed frequency names
ivtv-tune -L
# set the tuner (to the wrong channel, but oh well...)
ivtv-tune -tus-bcast -c2
# search the web, and eventually learn that ivtv-ctl functionality
# has mostly moved to v4l2-ctl
v4l2-ctl 
v4l2-ctl --all
v4l2-ctl -T
# list possible outputs; I want the tuner
v4l2-ctl -n
# choose the tuner (coax input)
v4l2-ctl -i 0
# choose the s-video input (to test, since it works w/ the mythtv)
v4l2-ctl -i 1
v4l2-ctl --all
# copy a bit from the s-video input
cat /dev/video0 > foo.mpg
ls -l foo.mpg 
totem foo.mpg
rm foo.mpg
# switch to the tuner
v4l2-ctl -i 0
# copy fuzz since I'm on the wrong channel
cat /dev/video0 > foo.mpg
# switch to the right channel
ivtv-tune -tus-bcast -c3
# run a test
cat /dev/video0 > foo.mpg
totem foo.mpg
# success!