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Object Hierarchy
GObject ╰── GInitiallyUnowned ╰── GstObject ╰── GstElement ╰── GstAggregator ╰── GstVideoAggregator ╰── GstGLBaseMixer ╰── GstGLMixer ╰── GstGLStereoMix
Description
Combine 2 input streams to produce a stereoscopic output stream. Input views are taken from the left pad and right pad respectively, and mixed according to their timelines.
If either input stream is stereoscopic, the approproriate view (left or right) is taken from each stream and placed into the output.
The multiview representation on the output is chosen according to the downstream caps.
Examples
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gst-launch-1.0 -v videotestsrc pattern=ball name=left \ videotestsrc name=right glstereomix name=mix \ left. ! vid/x-raw,width=640,height=480! glupload ! mix. \ right. ! video/x-raw,width=640,height=480! glupload ! mix. \ mix. ! video/x-raw'(memory:GLMemory)',multiview-mode=side-by-side ! \ queue ! glimagesink output-multiview-mode=side-by-side |
Mix 2 different videotestsrc patterns into a side-by-side stereo image and display it.
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gst-launch-1.0 -ev v4l2src name=left \ videotestsrc name=right \ glstereomix name=mix \ left. ! video/x-raw,width=640,height=480 ! glupload ! glcolorconvert ! mix. \ right. ! video/x-raw,width=640,height=480 ! glupload ! mix. \ mix. ! video/x-raw'(memory:GLMemory)',multiview-mode=top-bottom ! \ glcolorconvert ! gldownload ! queue ! x264enc ! h264parse ! \ mp4mux ! progressreport ! filesink location=output.mp4 |
Mix the input from a camera to the left view, and videotestsrc to the right view, and encode as a top-bottom frame packed H.264 video.
Synopsis
Element Information
plugin |
openglmixers |
author |
Jan Schmidt <jan@centricular.com> |
class |
Filter/Effect/Video |
Element Pads
name |
sink_%u |
direction |
sink |
presence |
request |
details |
video/x-raw(memory:GLMemory), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], texture-target=(string)2D |
| video/x-raw(meta:GstVideoGLTextureUploadMeta), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ] | |
| video/x-raw, format=(string){ RGBA, RGB, RGBx, BGR, BGRx, BGRA, xRGB, xBGR, ARGB, ABGR, Y444, I420, YV12, Y42B, Y41B, NV12, NV21, YUY2, UYVY, AYUV, GRAY8, GRAY16_LE, GRAY16_BE, RGB16, BGR16 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ] |
name |
src |
direction |
source |
presence |
always |
details |
video/x-raw(memory:GLMemory), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], texture-target=(string)2D |
| video/x-raw(meta:GstVideoGLTextureUploadMeta), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ] | |
| video/x-raw, format=(string){ RGBA, RGB, RGBx, BGR, BGRx, BGRA, xRGB, xBGR, ARGB, ABGR, Y444, I420, YV12, Y42B, Y41B, NV12, NV21, YUY2, UYVY, AYUV, GRAY8, GRAY16_LE, GRAY16_BE, RGB16, BGR16 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ] |
Property Details
The “downmix-mode” property
“downmix-mode” GstGLStereoDownmix
Output anaglyph type to generate when downmixing to mono.
Flags: Read / Write
Default value: Dubois optimised Green-Magenta anaglyph