Hello,
Subtitles & EPG info text is flickering on my Uclan ustym 4k pro.
Something that never happened on my old xtrend et6000.
I am attaching samples:
flickering subtitles & epg info text on uclan ustym 4k pro
Started by imperia, 05 Sep 2022 17:45
12 replies to this topic
#1
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Posted 5 September 2022 - 17:45
Re: flickering subtitles & epg info text on uclan ustym 4k pro #2
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Posted 6 September 2022 - 00:49
Never seen that before. Are those TXT subs or DVB subs?
And which OpenPLi is running?
Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), uClan Usytm 4K Ultimate (S2+T2), Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)
Due to my bad health, I will not be very active at times and may be slow to respond. I will not read the forum or PM on a regular basis.
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Re: flickering subtitles & epg info text on uclan ustym 4k pro #3
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Posted 7 September 2022 - 14:31
Subtitles are .srt files. While playing movies with media player.
Haven't noticed problems with DVB subtitles that are embedded into TS stream coming from the satellites.
Using latest normal OpenPLi 8.2 stable. Not development version.
Re: flickering subtitles & epg info text on uclan ustym 4k pro #4
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Posted 7 September 2022 - 14:37
There are some issues with the framebuffer layer on that type of boxes, which are being worked on. You can also notice it when you open the multiEPG, you can clearly see it being redrawn.
Make an autobackup of your 8.2 configuration, flash the current nightly build into a spare slot, and restore the autobackup after bootup, so your config is identical. And see if that makes a difference.
Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), uClan Usytm 4K Ultimate (S2+T2), Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)
Due to my bad health, I will not be very active at times and may be slow to respond. I will not read the forum or PM on a regular basis.
Many answers to your question can be found in our new and improved wiki.
Re: flickering subtitles & epg info text on uclan ustym 4k pro #5
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Posted 8 September 2022 - 16:41
I installed develop version on slot 4, but the issue is still present. Haven't tried multiEPG, but I can clearly see it specially on 2 line subtitles or EPG info screen.
Re: flickering subtitles & epg info text on uclan ustym 4k pro #6
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Posted 8 September 2022 - 16:52
Then more work is needed.
Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), uClan Usytm 4K Ultimate (S2+T2), Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)
Due to my bad health, I will not be very active at times and may be slow to respond. I will not read the forum or PM on a regular basis.
Many answers to your question can be found in our new and improved wiki.
Re: flickering subtitles & epg info text on uclan ustym 4k pro #7
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Posted 9 September 2022 - 14:31
If you are using preinstalled skin then make sure its full hd 1080p skin .
DM-900 ,DM-520, Vu+Duo2
Re: flickering subtitles & epg info text on uclan ustym 4k pro #8
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Posted 9 September 2022 - 17:21
I am using Pd1loi-hd-night skin, but I tried the default one too. PLi-FullNightHD. Haven't tested subtitles on this one, but epg info is flickering.
Re: flickering subtitles & epg info text on uclan ustym 4k pro #9
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Posted 8 February 2024 - 21:32
Hello,
This issue is still present after 15+ months. I am still hoping for resolution of the problem.
For the test I installed OpenATV and there seems to be no flickering.
You mentioned framebuffer layer. I was inspecting modules and noticed there is one called hi_fb.ko.
Is the root of the fault in this file or other place in OpenPLi code?
Can I copy the file from OpenATV to try it on OpenPLi or they are not interchangeable?
Re: flickering subtitles & epg info text on uclan ustym 4k pro #10
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Posted 9 February 2024 - 07:39
The YouTube movies do only demonstrate flickering of the 2nd line in the subtitles. On epg we do not have an example. It looks like it is related to the ‘source’. Is it a normal tv service? Are it teletext subs or dvb graphical subs? With my uclan and Dutch channels in dvb and teletext subs I cannot verify it. What channel or other source do you experience it?
Edited by littlesat, 9 February 2024 - 07:40.
WaveFrontier 28.2E | 23.5E | 19.2E | 16E | 13E | 10/9E | 7E | 5E | 1W | 4/5W | 15W
Re: flickering subtitles & epg info text on uclan ustym 4k pro #11
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Posted 9 February 2024 - 13:14
The "flickering" is caused by the screen being refreshed from the framebuffer while the framebuffer is being written.
You see the same thing in other parts of the GUI, like the MPEPG or the virtual keyboard, everywhere where there are a lot of graphical elements, especially if alphablending is used (which wouldn't surprise me on graphical subs with a transparent background).
It is a generic driver issue on all boxes with a HiSilicon chipset.
OE-A (which ATV uses) has a hack that freezes screen updates during writes. That removes the flickering, but also delays interaction and output, creating an often unacceptable lag on the output, so we haven't implemented it.
Currently in use: VU+ Duo 4K (2xFBC S2), VU+ Solo 4K (1xFBC S2), uClan Usytm 4K Ultimate (S2+T2), Octagon SF8008 (S2+T2), Zgemma H9.2H (S2+T2)
Due to my bad health, I will not be very active at times and may be slow to respond. I will not read the forum or PM on a regular basis.
Many answers to your question can be found in our new and improved wiki.
Re: flickering subtitles & epg info text on uclan ustym 4k pro #12
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Posted 9 February 2024 - 14:12
Indeed a good observation Wanwizard....
WaveFrontier 28.2E | 23.5E | 19.2E | 16E | 13E | 10/9E | 7E | 5E | 1W | 4/5W | 15W
Re: flickering subtitles & epg info text on uclan ustym 4k pro #13
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Posted 12 February 2024 - 07:22
I will make new videos at the first convenient moment.
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