path: root/Documentation/userspace-api
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authorStanimir Varbanov <>2020-11-24 01:01:37 +0100
committerMauro Carvalho Chehab <>2021-03-22 09:24:59 +0100
commitf2bf1bcb191b15c0ac135af2651ebed6c017bcb0 (patch)
tree65b87f4969ded80358b3e0318a85914cf0e0dafd /Documentation/userspace-api
parent644bcc0315f2b1c438132c46f78221cd6a6f67f3 (diff)
media: v4l2-ctrls: Add control for AUD generation
Add a control to enable inserting of AUD NALU into encoded bitstream. Reviewed-by: Hans Verkuil <> Signed-off-by: Stanimir Varbanov <> Signed-off-by: Mauro Carvalho Chehab <>
Diffstat (limited to 'Documentation/userspace-api')
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
index 86b23caf4be1..9963c1c9a4d5 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
@@ -694,6 +694,11 @@ enum v4l2_mpeg_video_frame_skip_mode -
of display order, in addition the hardware may still be using the
returned buffer as a reference picture for subsequent frames.
+ If enabled then, AUD (Access Unit Delimiter) NALUs will be generated.
+ That could be useful to find the start of a frame without having to
+ fully parse each NALU. Applicable to the H264 and HEVC encoders.
Enable writing sample aspect ratio in the Video Usability
Information. Applicable to the H264 encoder.