Cannot make it run on OrangePi PC (sun8i-h3) about libva-v4l2-request

[paulkocialkowski]

Hi,

I spent whole day until understood that VLC by default uses multi-threading for ffmpeg and this DISABLES any possibility for HW accel.

This is unheard of so far. Do you have anything to back this statement besides what you are describing? If not, can you indicate how to reproduce the issue in details?

Segmentation fault

Well, are you sure this is caused by our libva and not by your setup somehow? We need more information anyway.

Next I am trying to use gstreamer.

We don't support GStreamer at this point, but I think Nicolas has it working (with buffer copies) with patches from his pull request, that I'll pick up very soon.

What ever this can be? Can You please give me some ideas? What is wrong with VLC?

Things are working fine on my side, so I will need more information if you want to see the issue resolved. For instance, reproducing the segfault in gdb and sharing traces, etc.

[marsohod4you]

I found this thread: https://forum.videolan.org/viewtopic.php?t=134770
They discuss issue similar I had, they write (if I understood correctly) that VLC can be compiled to use libav or ffmpeg and if it uses ffmpeg then multithreading in ffmpeg disables VLC hw acceleration.
I have installed vlc with "apt install vlc" - that is all - I have no idea how it was built or which libraries it uses.
I followed their advice to disable multithreading and then it starts to call your driver.
Well, to be honest i am not interested on VLC at all.. so I stopped my research here.
Besides that libva-dump works perfectly.

Anyway I need gstreamer plugin and I dig in this direction, without success yet.
Is it possible somehow to get gstreamer patches or whatever? Copying frames is ok for me.

[marsohod4you]

What is exact version of libva library neccessary to work this driver?
What is proper or recommended source of libva library?
On armbian "apt install" gives me libva version 0.39 but probably this is too old?

[Dreyk007]

@paulkocialkowski same question as above: which version of libva (https://github.com/intel/libva) neccessary for libva-v4l2-request now? Thank you.