About TV

Company: Daewoo DC

Purchase date: Last 15 years, and the most modern of its time

Size: 24 inch

Interface: Has Audio-Video port

[Other than that, its just a radioactive box, weird signal goes in, video comes out]

About Raspberry pi

Model: Raspberry Pi 4B (4GB RAM)

OS: Raspberrypi OS

Situation

Its not cabling thats the issue. The TV shows visual but the graphics is very hazy and blurry. I suppose it has something to do with either the frame rate made for digital monitors being too high for the TV or the video resolution being too unbarable.

I have used CRT computer monitors but they used VGA. In those monitors, I used to set resolution to 800x600px and it would show the clearest. CRT monitors dont have this concept of pixels, yet setting pixels to 800x600 does the job in VGA CRT monitors. It did not work in case of my TV.

I should mention that the device I purchased to convert HDMI to Audio Video has a toggleable switch that can be changed to NTSC or PAL. I dont know what that is, both works but setting to PAL seems to be slightly clearer.

I am asking here in hopes someone else has done it and how they made it barable.

[Also I am sorry I do not understand the language that is mostly used here. This community seems to be the most active one so I decided to ask for help here]

  • cy_narrator@discuss.tchncs.deOP
    1·
    10 months ago

    Sure, I think I will try 320x240 since 640x480 clearly didnt work. Should I/Could I set the frame rate to 30fps through config.txt hdmi_ctv option? Also should I set it to progressive or interlaced?

    • RxBrad@lemmings.worldEnglish
      2·
      10 months ago

      If you’re playing games, I’d actually recommend sticking to 640x480 if at all possible, and trying to increase the font size in any UIs you have running so they’re readable.

      Most game consoles ran at odd resolutions that don’t divide evenly into 320x240, so you get weird scaling issues. I’ve had best results running at 640x480; setting a custom viewport in Retroarch & manually adjusting the x & y resolutions to fit the screen for each system; and then applying the sharp-bilinear-2x-prescale shader to every system.

      If you’re in the US, I’d stick to NTSC 60fps. If you’re elsewhere like Europe, you’ll likely use PAL 50fps.

      It’s likely that your HDMI adapter is probably converting whatever signal you pump into it to 480i, so I’d just pick whatever looks best between progressive and interlaced.

      • cy_narrator@discuss.tchncs.deOP
        1·
        10 months ago

        I live in Nepal which is neither US nor Europe, this is whats confusing me more.

        Well, what I found was both NTSC and PAL works over HDMI (I purchased a Composite to HDMI converter) though NTSC is worse than PAL. So I assumed my TV is PAL.

        I dont really have any aim for this “project” I just noticed this old TV lying right across my bed doing nothing and now I wonder if it can do anything.

        I will likely use it to watch Youtube videos or something. I do have a DVD player compatible with this TV but it would be nice if I could make it more powerful than that. Afterall, I dont have any other 24 inch display for larger video.