videocrop
This element crops video frames, meaning it can remove parts of the picture on the left, right, top or bottom of the picture and output a smaller picture than the input picture, with the unwanted parts at the border removed.
The videocrop element is similar to the videobox element, but its main goal is to support a multitude of formats as efficiently as possible. Unlike videbox, it cannot add borders to the picture and unlike videbox it will always output images in exactly the same format as the input image.
If there is nothing to crop, the element will operate in pass-through mode.
Note that no special efforts are made to handle chroma-subsampled formats in the case of odd-valued cropping and compensate for sub-unit chroma plane shifts for such formats in the case where the left or top property is set to an odd number. This doesn't matter for most use cases, but it might matter for yours.
Example launch line
gst-launch-1.0 -v videotestsrc ! videocrop top=42 left=1 right=4 bottom=0 ! ximagesink
Hierarchy
GObject ╰──GInitiallyUnowned ╰──GstObject ╰──GstElement ╰──GstBaseTransform ╰──GstVideoFilter ╰──videocrop
Factory details
Authors: – Tim-Philipp Müller
Classification: – Filter/Effect/Video
Rank – none
Plugin – videocrop
Package – GStreamer Good Plug-ins
Pad Templates
sink
video/x-raw:
format: { RGB, BGR, RGB16, RGB15, RGBx, xRGB, BGRx, xBGR, RGBA, ARGB, BGRA, ABGR, GRAY8, GRAY16_LE, GRAY16_BE, AYUV, YVYU, YUY2, UYVY, v210, I420, A420, YV12, Y444, Y42B, Y41B, I420_10BE, A420_10BE, Y444_10BE, A444_10BE, I422_10BE, A422_10BE, I420_10LE, A420_10LE, Y444_10LE, A444_10LE, I422_10LE, A422_10LE, I420_12BE, Y444_12BE, I422_12BE, I420_12LE, Y444_12LE, I422_12LE, GBR, GBR_10BE, GBR_10LE, GBR_12BE, GBR_12LE, GBRA, GBRA_10BE, GBRA_10LE, GBRA_12BE, GBRA_12LE, NV12, NV21 }
width: [ 1, 2147483647 ]
height: [ 1, 2147483647 ]
framerate: [ 0/1, 2147483647/1 ]
video/x-raw(ANY):
width: [ 1, 2147483647 ]
height: [ 1, 2147483647 ]
framerate: [ 0/1, 2147483647/1 ]
src
video/x-raw:
format: { RGB, BGR, RGB16, RGB15, RGBx, xRGB, BGRx, xBGR, RGBA, ARGB, BGRA, ABGR, GRAY8, GRAY16_LE, GRAY16_BE, AYUV, YVYU, YUY2, UYVY, v210, I420, A420, YV12, Y444, Y42B, Y41B, I420_10BE, A420_10BE, Y444_10BE, A444_10BE, I422_10BE, A422_10BE, I420_10LE, A420_10LE, Y444_10LE, A444_10LE, I422_10LE, A422_10LE, I420_12BE, Y444_12BE, I422_12BE, I420_12LE, Y444_12LE, I422_12LE, GBR, GBR_10BE, GBR_10LE, GBR_12BE, GBR_12LE, GBRA, GBRA_10BE, GBRA_10LE, GBRA_12BE, GBRA_12LE, NV12, NV21 }
width: [ 1, 2147483647 ]
height: [ 1, 2147483647 ]
framerate: [ 0/1, 2147483647/1 ]
video/x-raw(ANY):
width: [ 1, 2147483647 ]
height: [ 1, 2147483647 ]
framerate: [ 0/1, 2147483647/1 ]
Properties
bottom
“bottom” gint
Pixels to crop at bottom (-1 to auto-crop)
Flags : Read / Write
Default value : 0
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