Vaapidecode Format and OpenGL

[Hyunjun Ko]

Hi,

Probably you're using old version of gstreamer-vaapi, I guess it's 1.8 or
under it.
I recommend you use higher version of gstreamer-vaapi, 1.10 at least, 1.12
highly recommended, if you want to manipulate GL buffer from vaapi decoder.
Because there was important bug-fix and optimization for GLX/EGL in
gstreamer-vaapi between 1.8 and 1.10.

https://bugzilla.gnome.org/show_bug.cgi?id=769293
https://bugzilla.gnome.org/show_bug.cgi?id=766206

Then, I believe you can use this pipeline with GstVideoGLTextureUploadMeta
negotiated without capsfilter.

gst-launch-1.0 *-v* filesrc location=/home/perso/video.mp4 ! qtdemux !
vaapidecodebin ! glupload ! appsink 
(Note that this uses vaapidecodebin since vaapidecode is gone in 1.10)

In addition, probably you may want to choose GLX or EGL by env variable
GST_GL_PLATFORM=glx or GST_GL_PLATFORM=egl.




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