Posts by vasonline

Quote from dtech

The "disp_cap" contains 576cvbs only!

1. TV settings standard (4:3) -> The GUI shows itself to be 16:9, which looks like what has been compressed horizontally.
2. TV set to 16:9, the GUI ratio now looks good, only the edges hanging over in all directions (overscan).
3. I started a TV show that now under 16:9 looked like it was compressed vertically.
4. I started the video calibration from the PVR menu and adjusted the corners, which eliminated the wrong overscan.
   I also set the right aspect ratio for the correct display, the rectangle actually became square.

I don't know if this is a good solution, but it would be right for me.

After the last step of the calibration (pixel ratio adjustment), the GUI will also be displayed in the right aspect ratio:

forum.libreelec.tv/core/attachment/7664/

The problem is not the custom resolution, but the fact is that there are no signal via composite output if the resolution set other than 480* or 576*. At least that is what I have experienced.

Hi Dtech,

Thanks for explaining the steps.

I understand what you did.

"disp_cap" contains 576cvbs

Problem is, that in step 1, I get

1. TV settings standard 4;3 -> the gui itself shows itself to be 4:3 which is perfecty fine, but not widescreen (black bars left / right)

2. TV set to 16:9. The gui ratio now looks bad, with everything horizontally stretched. (but no black bars)

I give up. You did what you could.

I'll swap the s905 for something that can output widescreen.

Greetings

Hi Dtech,

Thanks for the try!

That looks indeed just fine.

Thanks for testing it!

Did you stretch it from 4:3 to 16:9 with the video calibration? It shows an adjustment of 1,4.

Without video cal, did you not have 4:3?

Fixing 4:3 to 16:9 with video calibration,

isn't that "wrong way" to do that?

Gui settings aspect ratio still mangled at wrong res.

I am not sure.

Maybe the question is more:

How can I put in a custom resolution in Libreelec?

Maybe I am asking in this in the wrong forum?

No offence meant!

Greetings!

Found something is dmesg about screen aspect.

[ 19.147831@3] vdac_enable: on:1,module_sel:8

[ 19.147881@3] tv_vout: new mode =576cvbs set ok

[ 19.147900@3] vout_serve: vinfo mode is: 576cvbs

[ 19.147920@3] vout_serve: new mode 576cvbs set ok

[ 19.147972@3] hdmitx: edid: not find mapped vic

[ 19.147992@3] hdmitx: edid: not find mapped vic

[ 19.148024@3] hdmitx: video: get current mode: 576cvbs

[ 19.148041@3] hdmitx: update rx hdr info 0

[ 19.148058@3] hdmitx: update physcial size: 4 3

Quote from dtech

Is the 576i not the same as the 720x576i50? Because its ratio is still 4:3.

Hi Dtech,

16:9 resolution is actually the same as 4:3

it is 720x576i 50Hz

But the S905D should send the picture stretched out like this:

The TV will then compress it and put it in the right aspect ratio.

I'll attach a picture what it should do.

The problem I see is, that even with the hdmi input to a flatscreen tv I am unable to obtain a 16:9 picture as well.

Tested with 720 setting -> Ok widescreen

Tested with 1080 setting -> Ok Widescreen

Tested with 576 setting -> Nok -4:3

Is this a Librelec issue? Shoulden't the S905 support more video modes?

Greetings!

Quote from dtech

Well, I may not have anything to suggest.

I have tried to look for this error here in the forum or on the internet only in relation to Kodi, but I did not find anything relevant.

Hi Dtech,

Thanks for trying. If you can i'd appreciate it very much if you want to test the cvbs connection this weekend on lcd tv.

However when playing with the LCD tv and connecting the box with HDMI, I notice something odd: you can't change the resolution in Kodi. The options under system settings are grayed out...

It that the same with your S905 boxes?

Hm might have something to do with the disp_cap file in place. Yes it does. I am unable to find a list with resolutions. Why not put 576i wdescreen in there? hmm.

Quote from vasonline

I will try the same setup on a more recent lcd, that also has cvbs input. I think the result will be the same. But will try first.

Confirmed with a LCD TV using the composite input. It is the same. We have a 4:3 output on 16:9 TV.

Quote from dtech

vasonline

Unfortunately, newer LG OLED TVs no longer have any analog inputs installed, so I can't try it now.

But this weekend I will also try the CVBS output with another TV. (16:9 LCD with composite input)

Hi Dtech,

Thumbs up for you!

I will try the same setup on a more recent lcd, that also has cvbs input. I think the result will be the same. But will try first.

Greetings

Hi Dtech,

Cool you never seen one Always a first

Yes, there existed such a thing as analog 16:9 over here. For quite some time. It was called PAL plus.

It was used untill the end of the analog broadcast shutdown. Imagine a regular 4:3 / 576 lines picture, with a letterbox 16:9 broadcast inside it. That's what you would see on a regular 4:3 TV.

However inside the "black bars" above and below the rest of the TV lines were "hidden".(if you really cranked up the brightness you could see them)

A widescreen tv would decode those hidden lines & then give you the full resolution picture. (w/o the black bars of course).

Now in modern times, the every set top box, dvd player does this as follows: output an anamorphic 4:3 picture. (everything is stretched when in 4:3) The TV is then set to "Wide" and it will compress the 4:3 picture to a 16:9 aspect ratio. Same result, but much easier.

I have attached what's inside my display_cap file.

I did not find any other settings. Maybe there are?

I am not sure if this is a kodi setting or a libreelec setting. With the (original) Android tv, you could set the aspect ratio (4:3 / 16:9) With 16:9 it did a proper anamorpic ratio. That setting was however not in Kodi, but somewher in the Android settings.

For the video's a found a partial solution: inside a clip setting (wheel bottom right I could enable 'stretch to 16:9) No if only I could find this for the GUI...

That still wrong.

Added some screenshots to show the problem.

With the various modes you can set the TV set "in to" illustrate what happens when the ratio's are wrong...

The TV mode is displayed in green color (centered).

Greetings!

Hi Dtech,

Your image for the KI-Pro works just fine!

on my M8S+DVB with 1Gb RAM.

(see picture)

All the basics work, and amremote works too.

Dvb tuner not yet tried.

However no composite output,

Add disp_cap and composite output works.

Just one problem it: it outputs a 4:3 letterbox picture

& but it should be 4:3 anamorphic (16:9) for the TV.

Do you know the place where you can set the correct aspect ratio? (4:3 or 16:9).

I have added two TV pictures, so you can see the letterboxing on the video (4:3 with black bars above and below). Basically it just outputs a regular 4:3.

Greetings.

Hi Dtech,

Thank you for the fast reply.

I will try your build for the KI-Pro, with the correct dtb.

I don't use the wlan, so that's no problem for me.

I will let you know how it goes.

Greetings,

Hey Dtech,

Thank you for your great work making these images!

Question: Would you be so kind to make a version for the Amlogic 905D with 1G ram / 8Gb eMMC too?

I have the M8S Plus with DVB-T (KI Pro)

but not with 2Gb / 16Gb eMMC.

but instead the 1Gb ram /8Gb version.

Attached is a dmesg from corelec that I got running on sd card.

Greetings!