This is probably because v4l somehow uses vsync directly. Keep in mind
that v4l bypasses X11.
Also, you can use qt5 with pure framebuffer output. There, vsync works.
On 2014-09-23 19:19, Alfonso Tamés wrote:
Yes, the attached test video is tearing in EGL FB without X11/wayland.
This tears:
gst-launch-1.0 -v filesrc location=vttest.mp4 typefind=true ! qtdemux
! h264parse ! imxvpudec ! imxeglvivsink
This does not tear:
gst-launch -v filesrc location=vttest.mp4 typefind=true ! aiurdemux !
queue ! vpudec ! mfw_v4lsink
I was jut starting a project using qt-gst gl video sink. I guess it
will be a dead end
:(
On Sep 23, 2014, at 11:48 AM, Prabhu S <prabhusun...@gmail.com
<mailto:prabhusun...@gmail.com>> wrote:
i.MX6 X11 EGL is single buffered and there is no support for VSYNC.
The tearing with X11 is a known issue. We did investigate to fix
this, but the solution becomes too hacky and cannot be used in
production systems.
We are adding VSYNC support in Wayland. eglSwapInterval will be
supported for FBDEV and Wayland backends in the upcoming release(in
january). So Ozone-wayland can take advantage of this.
On Tue, Sep 23, 2014 at 9:55 AM, Carlos Rafael Giani
<d...@pseudoterminal.org <mailto:d...@pseudoterminal.org>> wrote:
On 09/23/2014 04:50 PM, Daiane Angolini wrote:
On Tue, Sep 23, 2014 at 11:31 AM, Gerard Bucas
<gerar...@tekmagic.net <mailto:gerar...@tekmagic.net>> wrote:
I agree Carlos!
This is a show-stopper for applications in markets like
the Digital Signage market - which could be huge for the
i.MX6. The i.MX6 could be the best "media player" out
there but the problems related to video playback in a
browser (like Chrome/Chromium) needs to be solved wih the
highest priority and at the highest level.
There seem to be TWO main issues:
Do you have only 2 issues? Have you double checked if they
are/are not
reported in bugzilla?
Do you have the detailed step-by-step? I want to reproduce them.
Daiane
Daiane,
try out the attached HTML example. It draws a white vertical bar
on a black background, and moves that bar horizontally. Run this
on an imx6 in Chromium in X11, and you will see how severe the
tearing is.
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