On Mon, Oct 7, 2019 at 9:51 PM Steve Longerbeam <slongerbeam@xxxxxxxxx> wrote: > Ah progress. Try: > > v4l2-ctl -d0 --set-fmt-video=field=interlaced Yes, with this hint I can run: # v4l2-ctl -d0 --set-fmt-video=field=interlaced # v4l2-ctl --device /dev/video0 --stream-mmap --stream-to=x.raw --stream-count=1 And it seems to accept the capture of a frame. Without passing field=interlaced, I used to get: # v4l2-ctl --device /dev/video0 --stream-mmap --stream-to=x.raw --stream-count=1 [ 163.838944] ipu1_csi0: capture format not valid So now I need to see if I can get Gstreamer to accept a pipeline like: gst-lauch-1.0 v4l2src ! kmssink Thanks > Unless you specify interlaced at the video interface, the driver will > just combine alternate fields into seq-bt. I guess the v4l2src plugin > doesn't support seq-bt.
