Comments on: Video 4-way split screen gstreamer pipeline http://blogs.gnome.org/halfline/2009/10/11/video-4-way-split-screen-gstreamer-pipeline/ So... Thu, 04 Aug 2011 18:57:43 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: alex http://blogs.gnome.org/halfline/2009/10/11/video-4-way-split-screen-gstreamer-pipeline/comment-page-1/#comment-71 alex Tue, 08 Dec 2009 11:31:34 +0000 http://blogs.gnome.org/halfline/?p=55#comment-71 Would that work for v4l2 devices (2 of them side by side)? This works but the output of one of the devices is choppy: gst-launch v4l2src device=/dev/video1 ! videobox left=-1 ! videomixer name=mix ! ffmpegcolorspace ! xvimagesink mix. v4l2src device=/dev/video0 ! videoscale ! videobox left=-640 ! mix. However, I am unable to get something based on your filter to work. Any hint? gst-launch -vv \ v4l2src device=/dev/video0 name=upper_right_video \ ! videoscale \ ! ffmpegcolorspace \ ! videomixer.mymix.sink_0. \ v4l2src device=/dev/video1 name=upper_left_video \ ! videoscale \ ! ffmpegcolorspace \ ! videomixer.mymix.sink_1. \ videomixer name=mymix \ sink_0::xpos=1 sink_0::ypos=0 sink_0::zorder=0 \ sink_1::xpos=640 sink_1::ypos=0 sink_1::zorder=1 \ ! ffmpegcolorspace \ ! videoscale \ ! xvimagesink mymix. Would that work for v4l2 devices (2 of them side by side)?
This works but the output of one of the devices is choppy:

gst-launch v4l2src device=/dev/video1 ! videobox left=-1 ! videomixer name=mix ! ffmpegcolorspace ! xvimagesink mix. v4l2src device=/dev/video0 ! videoscale ! videobox left=-640 ! mix.

However, I am unable to get something based on your filter to work. Any hint?

gst-launch -vv \
v4l2src device=/dev/video0 name=upper_right_video \
! videoscale \
! ffmpegcolorspace \
! videomixer.mymix.sink_0. \
v4l2src device=/dev/video1 name=upper_left_video \
! videoscale \
! ffmpegcolorspace \
! videomixer.mymix.sink_1. \
videomixer name=mymix \
sink_0::xpos=1 sink_0::ypos=0 sink_0::zorder=0 \
sink_1::xpos=640 sink_1::ypos=0 sink_1::zorder=1 \
! ffmpegcolorspace \
! videoscale \
! xvimagesink mymix.

]]> By: Open Source, Portable Usability Testing Lab: Part 2 – The Parts « mairin http://blogs.gnome.org/halfline/2009/10/11/video-4-way-split-screen-gstreamer-pipeline/comment-page-1/#comment-36 Open Source, Portable Usability Testing Lab: Part 2 – The Parts « mairin Sat, 17 Oct 2009 21:55:24 +0000 http://blogs.gnome.org/halfline/?p=55#comment-36 [...] Ray Strode helped me write a gstreamer pipeline to construct the videos into a quad-screen video. (Ray has sinced worked out a much more efficient pipeline, and created a git repository on GNOME.org to make it [...] [...] Ray Strode helped me write a gstreamer pipeline to construct the videos into a quad-screen video. (Ray has sinced worked out a much more efficient pipeline, and created a git repository on GNOME.org to make it [...]

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