V4L/DVB (5179): Cx2341x encoder documentation update.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/Documentation/video4linux/cx2341x/fw-encoder-api.txt b/Documentation/video4linux/cx2341x/fw-encoder-api.txt
index e499cc07fe3d..242104ce5b61 100644
--- a/Documentation/video4linux/cx2341x/fw-encoder-api.txt
+++ b/Documentation/video4linux/cx2341x/fw-encoder-api.txt
@@ -680,7 +680,7 @@ Description
         the value.
 Param[0]
         Command number:
-         1=set initial SCR value when starting encoding.
+         1=set initial SCR value when starting encoding (works).
          2=set quality mode (apparently some test setting).
          3=setup advanced VIM protection handling (supposedly only for the cx23416
            for raw YUV).
@@ -689,7 +689,11 @@ Param[0]
          4=generate artificial PTS timestamps
          5=USB flush mode
          6=something to do with the quantization matrix
-         7=set navigation pack insertion for DVD
+         7=set navigation pack insertion for DVD: adds 0xbf (private stream 2)
+           packets to the MPEG. The size of these packets is 2048 bytes (including
+           the header of 6 bytes: 0x000001bf + length). The payload is zeroed and
+           it is up to the application to fill them in. These packets are apparently
+           inserted every four frames.
          8=enable scene change detection (seems to be a failure)
          9=set history parameters of the video input module
         10=set input field order of VIM