gstreamer/gst/videomixer
Tim-Philipp Müller cac9aab107 meson: Replace empty configuration_data() with copy keyword
Use 'copy' keyword to avoid meson warning message.
Note that 'copy' keyword in configure_file() is available
since meson 0.47.0

https://bugzilla.gnome.org/show_bug.cgi?id=797298
2018-10-17 14:15:33 +01:00
..
blend.c videomixer: fix illegal memory access in blend function with negative ypos 2015-01-19 12:34:25 +00:00
blend.h Fix FSF address 2012-11-04 00:07:18 +00:00
Makefile.am Remove plugin specific static build option 2017-05-16 14:41:19 -04:00
meson.build meson: Replace empty configuration_data() with copy keyword 2018-10-17 14:15:33 +01:00
README A plugin to add an alpha channel to I420 video. Can optionally do chroma keying. 2004-05-28 18:01:34 +00:00
videomixer2.c videomixer: drop reference to videomixer 2 2016-04-13 10:57:03 -07:00
videomixer2.h videomixer: fix up QoS handling for live sources 2014-11-17 23:16:03 +11:00
videomixer2pad.h videomixer: use video library code instead of copy 2014-09-24 16:46:36 +02:00
videomixerorc-dist.c Update ORC files 2018-02-09 09:00:46 +01:00
videomixerorc-dist.h videomixer: use video library code instead of copy 2014-09-24 16:46:36 +02:00
videomixerorc.orc videomixer: use video library code instead of copy 2014-09-24 16:46:36 +02:00

Video Mixer
-----------

A generice video mixer, it blends the ayuv buffers from all pads onto 
a new buffer. The new buffer has by default a checkerboard pattern but
its color can be changed with a property.
The mixer can mix streams with different framerates and video sizes. It
uses the duration value of the buffer to schedule the rendering of the
buffers. For streams with a different resoltion than the final output
resolution one can specify the position of the top left corner where this
image should be placed with the pad properties xpos and ypos.
The overall alpha value of a stream can also be specified with a pad
property.
By default, the streams are blended in the order that the pads were 
requested from the element. This can be overridden by changing the 
zorder pad property of the stream, a stream with lower zorder gets
drawn first.


TODO
----

- really implement zorder
- take I420 yuv as well
- output AYUV if possible.
- implement different blend modes, some code is already done
- use filter caps on srcpad to decide on the final output size