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

Vlad Stelmahovsky vladstelmahovsky at gmail.com
Wed Jan 31 18:42:41 CET 2018


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>

> 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-debian-stretch
> where I used gstreamer-omx-rpi package.
> Playing example full hd video (http://cdn3.viblast.com/
> streams/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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Best regards,
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