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media: dev-encoder.rst: add reference to V4L2_FMT_FLAG_ENC_CAP_FRAME_INTERVAL

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Setting the stateful encoder capture frame interval is only supported
if this flag is set. Document this.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Michael Tretter <m.tretter@pengutronix.de>
Acked-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Hans Verkuil 2020-05-26 11:00:51 +02:00 committed by Mauro Carvalho Chehab
parent 286cf7d3a9
commit d09382777e
1 changed files with 2 additions and 1 deletions
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Documentation/userspace-api/media/v4l/dev-encoder.rst
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@ -281,7 +281,8 @@ Initialization
5. **Optional** Set the coded frame interval on the ``CAPTURE`` queue via
:c:func:`VIDIOC_S_PARM`. This is only necessary if the coded frame
interval is different from the raw frame interval, which is typically
the case for off-line encoding.
the case for off-line encoding. Support for this feature is signalled
by the :ref:`V4L2_FMT_FLAG_ENC_CAP_FRAME_INTERVAL <fmtdesc-flags>` format flag.
* ** Required fields:**