videomixer alpha transparency does not work on NVIDIA Jetson

[MaZderMind]

Hi

you could test compositor, which is another implementation of the
videomixer interface. It would also be interesting to know if the
greenscreen-alpha is working of if it is already broken at that point.
ypu might want to use pngenc / multifilesink or similar to save the
resulting iamges to pngs, checking their alpha channel.

Peter


Am 14.02.19 um 06:14 schrieb rary via gstreamer-devel:
> Hi All,
> 
> I'm trying following pipeline videomixer with 2 videotestsrc with alpha
> channels.
> This pipeline is from 
> https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good/html/gst-plugins-good-plugins-alpha.html
> 
> gst-launch-1.0 videotestsrc pattern=snow ! mixer.sink_0 \
>   videotestsrc pattern=smpte75 ! alpha method=green ! mixer.sink_1 \
>   videomixer name=mixer sink_0::zorder=0 sink_1::zorder=1 ! \
>   videoconvert ! video/x-raw,format=I420 ! xvimagesink
> 
> The pipeline works on my laptop linux machine.
> However, does not work on Jetson TX2 and Xavier.
> 
> The main difference is cpu.
> laptop is x86_64 but Jetson use arm cpu.
> 
> Anyone have information related to this?
> 
> Result picture:
> laptop linux machine
> https://imgur.com/a/ilxnvpg
> Jetson TX2/Xavier
> https://imgur.com/a/K2TqUEU
> 
> Thank you in advance.
> 
> 
> 
> --
> Sent from: http://gstreamer-devel.966125.n4.nabble.com/
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