[Interest] Video acceleration with gstreamer 1.0 omx and Qt 5.9.4 / 5.10 eglfs on RPI3 (brcm)

[Paolo Angelelli]

Maybe this could be relevant:
https://gstreamer.freedesktop.org/data/events/gstreamer-conference/2016/John%20Sadler%20-%20Smooth%20video%20on%20Raspberry%20Pi%20with%20gst-mmal%20(Lightning%20Talk).pdf

On Wed, 31 Jan 2018 18:48:47 +0100
Petar Koretić <petar.koretic at gmail.com> wrote:

> Thanks Paolo,
> I also found something along that lines so I will be trying this next.
> 
> Vlad, thanks, I actually took buildroot one from that page to make sure it
> works :)
> yocto was also next on my list, but for the lack of time I always end up
> using buildroot in the end as it should work the same, and I knew I had
> this running on raspbian so I thought this will "just work" as I would
> somewhat expect this to be pretty standard
> 
> Best regards,
> Petar
> 
> 
> On Wed, Jan 31, 2018 at 6:42 PM, Vlad Stelmahovsky <
> vladstelmahovsky at gmail.com> wrote:  
> 
> > Hi
> >
> > have you  checked the link: http://www.jumpnowtek.
> > com/rpi/Raspberry-Pi-Systems-with-Yocto.html ?
> >
> > On Wed, Jan 31, 2018 at 5:28 PM, Petar Koretić <petar.koretic at gmail.com>
> > wrote:
> >  
> >> Hi all.
> >>
> >> So I haven't played around with this for some time but around one year
> >> ago or more I think I got this up running fairly easily. This was maybe
> >> still with gstreamer 0.10.
> >>
> >> For the past two days I was trying to get video working with acceleration
> >> on the RPI player through QtMultimedia using QML Video element.
> >>
> >> Using VC4 driver is a no go as there is no acceleration support in the
> >> driver yet as far as I know but the simple fullhd video played pretty
> >> nicely as far as it goes.
> >>
> >> Anyway I went back the standard omx route.
> >> I tried to build and use Qt 5.9 creating a system using buildroot as I
> >> always do and later checking with latest raspbian stretch.
> >> Both methods compiled without issues using eglfs and gstreamer 1 and
> >> using the broadcom driver.
> >>
> >> In the end these are the instructions that I decided to follow for
> >> rasbian http://www.tal.org/tutorials/building-qt-510-raspberry-pi-de
> >> bian-stretch
> >> where I used gstreamer-omx-rpi package.
> >>
> >> Playing example full hd video (http://cdn3.viblast.com/strea
> >> ms/hls/airshow/2670k/stream.m3u8) or any mp4 youtube file results in a
> >> not so smooth video with obvious stutters (gpu_mem is at 256mb)
> >> .GST_DEBUG=omx:4 shows that the omx is being used.
> >>
> >> I remember that I was able to play two videos at the same time (one full
> >> hd, one smaller) with animations without issues but I'm not sure if this
> >> was using eglfs and gstreamer 1.0 as it was more than a year ago.
> >>
> >> Is this expected to work in this setup with gstreamer omx on rpi and
> >> broadcom driver using eglfs or which route should I go? Any help is
> >> appreciated as I've tried a fair bit of different things and I'm still
> >> trying but can't understand if this should be possible at all.
> >>
> >> Best regards,
> >> Petar
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> _______________________________________________
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> >> Interest at qt-project.org
> >> http://lists.qt-project.org/mailman/listinfo/interest
> >>
> >>  
> >
> >
> > --
> > Best regards,
> > Vlad
> >