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-rw-r--r--Documentation/video4linux/vivid.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/video4linux/vivid.txt b/Documentation/video4linux/vivid.txt
index 6cfc8541a362..cd4b5a1ac529 100644
--- a/Documentation/video4linux/vivid.txt
+++ b/Documentation/video4linux/vivid.txt
@@ -912,6 +912,11 @@ looped to the video input provided that:
sequence and field counting in struct v4l2_buffer on the capture side may not
be 100% accurate.
+- field settings V4L2_FIELD_SEQ_TB/BT are not supported. While it is possible to
+ implement this, it would mean a lot of work to get this right. Since these
+ field values are rarely used the decision was made not to implement this for
+ now.
+
- on the input side the "Standard Signal Mode" for the S-Video input or the
"DV Timings Signal Mode" for the HDMI input should be configured so that a
valid signal is passed to the video input.
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