[mythtv-users] MythTV Raspberry Pi2 frontend testers

[Gary Buhrmaster]

On Mon, Nov 23, 2015 at 11:09 AM, Lawrence Rust <lvr at softsystem.co.uk> wrote:
> On Sun, 2015-11-22 at 12:41 -0500, Peter Bennett (cats22) wrote:
....
>> 3. If you pull up the menu while playing a recording (M key) or other
>> OSD displays such as Info (I key), the video becomes jerky while the OSD
>> is displayed.
>
> This indicates that the OSD is falling back to CPU rendered softblend.
> The opengl OSD uses EGL and requires Qt to run in EGLFS mode.
>
> I really need to find out why the EGLFS mode is jerky on some RPi's.  I
> have 2 RPis and they both play smoothly in EGLFS mode with SD and 1080p
> video.  I have these settings in /boot/config.txt:
>
> disable_overscan=1
> hdmi_drive=2
> # 1920x1080 @ 50Hz 16:9, clock:148MHz progressive
> hdmi_group=1
> hdmi_mode=31

Conceivably the jerkiness could be due to testing in 60Hz
countries, or countries with higher bit rate content, and
needing just a bit more resources (just like some lower
nvidia GPUs were observed to result in jitter/judder in
60Hz countries, and not in those countries where 50Hz
was the standard, or with higher bit rate material).

You may need to (privately) obtain some sample video
for testing.

In any case, I will again recommend reports include the
source material details, and the playback device details,
so correlations might be able to be identified.