32 replies to this topic

[gh_n]

Hi
It seems the PliExtraInfo convert the interlaced format in wrong digit instead of "i50" it gives "i25" most of the times and calculation when using Resolution String is not correct!
Could it be fixed
Thanks

[littlesat]

Are you sure it isn't driver related? On which box and which channels do you experience it?

[Old Satterhand]

... instead of "i50" it gives "i25" most of the times and calculation when using Resolution String is not correct!...

 

 

 

i25, a 25 fps interlaced picture, does not and cannot exist.

It is the wrong description for i50, which is de official name for a 50fps interlaced picture.

So you have tot read i50 everytime you see i25.

 

I hope this helps?

[gh_n]

Are you sure it isn't driver related? On which box and which channels do you experience it?

Yes
the box is zero4k
i tested in most of the normal full HD channels and also with SD channels, and compere it simultaneously with another converter at the same time and the result differs from other converter
as I said The only mistake calculation is about "i50" which it shows "i25"

[gh_n]

<widget source="session.CurrentService" render="Label" position="1700,1000" size="200,30" font="Regular;24" halign="right" valign="center" zPosition="1" foregroundColor="grey" backgroundColor="secondBG" transparent="1" >
<convert type="PliExtraInfo">ResolutionString</convert>

You could test it yourself with the other boxes and see the results

Edited by Frenske, 14 August 2023 - 20:10.
I edited your lines and put a part of this between code markers.

[gh_n]

<widget source="session.CurrentService" render="Label" position="1700,1000" size="200,30" font="Regular;24" halign="right" valign="center" zPosition="1" foregroundColor="grey" backgroundColor="secondBG" transparent="1" >
<convert type="PliExtraInfo">ResolutionString</convert>

You could test it yourself with the other boxes and see the results

Attached Files

•  1692034558242.png   1.33MB   2 downloads

[gh_n]

For the sample

Attached Files

•  1692034558242.png   1.33MB   2 downloads

[mrvica]

the resolution string is created here

enigma2/lib/python/Components/Converter/PliExtraInfo.py at develop · OpenPLi/enigma2 · GitHub

OpenATV looks very different because of new AVControl -> eAVControl, could you check it on OpenATV

enigma2/lib/python/Components/Converter/PliExtraInfo.py at 7.3 · openatv/enigma2 · GitHub

[WanWizard]

There is a lot of confusion about this, even in this thread.

 

Officially, the "i" and "p" should be associated to the resolution, so "1080i" and "1080p", where "1080i25" is a 1080 image with 25fps interleaved, and "1080p50" is an 1080 image with 50 fps non-interleaved. "1080i50" and 1080p25" don't exist (in the wild).

 

In the standard PLi skin is is displayed as "1920x1080i25". which is correct.

[littlesat]

I25 is indeed correct… it is i25 or p50..:

Edited by littlesat, 14 August 2023 - 20:05.

[gh_n]

There is a lot of confusion about this, even in this thread.
 
Officially, the "i" and "p" should be associated to the resolution, so "1080i" and "1080p", where "1080i25" is a 1080 image with 25fps interleaved, and "1080p50" is an 1080 image with 50 fps non-interleaved. "1080i50" and 1080p25" don't exist (in the wild).
 
In the standard PLi skin is is displayed as "1920x1080i25". which is correct.

Thanks WanWizard
So in this way now I get the point
25i and 50i are the same thing. 25i means "25 frames per second, interlaced". 50i means "50 fields per second", the latter implies interlaced video.

[WanWizard]

No, they are not the same.

 

25 fps is not the same as 50 fps, the latter has twice the number of frames per second. And 50 fps interlaced does not exist.

 

25i will only become 50 fps after deinterlacing, either by the box, or by the TV. depending on your HDMI settings.

[gh_n]

No, they are not the same.
 
25 fps is not the same as 50 fps, the latter has twice the number of frames per second. And 50 fps interlaced does not exist.
 
25i will only become 50 fps after deinterlacing, either by the box, or by the TV. depending on your HDMI settings.

As I told in previous post
50i means "50 fields per second"
not 50 frames per second

[gh_n]

I meant in this the way too

[gh_n]

Pic

Attached Files

•  IMG_20230814_234107.jpg   43.23KB   2 downloads

[littlesat]

Due to the interlace a frame also has the half of the lines as non interlace…

[Trial]

Hi,

I also had the discussion a few years ago. When you look at the development there is not only one interlaced (1080 but also less) format there are two. First is 50 frames and all from different picutues (50 pictures) and the second with 50 frames but 2 always belong to the same picture (odd/even lines) which means 25 real pictures. This was introduced with DVDs and flags telling the hardware that a frame belongs to the former frame and odd/even frame are combined then. Whereas the first is mainly made to a full picture by line doubling. I think in broadcast systems now the second one is mostly used. You could see the difference if you press stop and you see a good picture or you see a picture which looks like a fence. For the later simple deinterlacing like bob and weave were used.

 

Today we should not care about the name anymore as long as the quality is ok.

 

Ralf

[gh_n]

Thanks all for participating and sharing details about this post

[Old Satterhand]

I hope this helps?

 

Not a big help I see.
I did not mean to start a discussion.

Being a A/V engineer for half a decade I use i50, like all other professionals.
But using i25 is fine for me, as we mean the same thing.

 

 

Officially, the "i" and "p" should be associated to the resolution, so "1080i" and "1080p", where "1080i25" is a 1080 image with 25fps interleaved, and "1080p50" is an 1080 image with 50 fps non-interleaved. "1080i50" and 1080p25" don't exist (in the wild).

You mean in your world, de Enigma 2 world and probably some other consumer devices.
In my world i50 is used. Check some EBU or ETSI documents and learn.
And I assure you:1080p25 does exist, There is also no interleaved format, i think you mean interlaced.

[mrvica]

maybe we should use manufacturer driver values (/proc)

ZDF HD Astra 1280x720p50 (shown on the skin)

/proc value different

root@h7:/tmp# cat /proc/stb/video/videomode
1080p50

ServusTV HD Deutschland 1920x1080i25 (shown on the skin)

/proc value different

root@h7:/tmp# cat /proc/stb/video/videomode
1080p50

Edited by mrvica, 15 August 2023 - 13:42.