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At least for RetroPie, there's a config file you can edit directly on the SD-card, to force a video output and resolution and set overscan. I'm using it force

At least for RetroPie, there's a config file you can edit directly on the SD-card, to force a video output and resolution and set overscan. I'm using it force mine into 480p mode, to feed a HDMI->S-Video converter, which gives better video quality than using the composite output.

mark-r 9y ago
Yes, S-video is better than composite. But RGB component is the best, if your TV has inputs for it.
- KozmoNau7 9y ago
  My TV has 2x SCART RGB, unfortunately I haven't found any good options for converting HDMI to SCART RGB. Everything is HDMI->component.
  - ValentineC 9y ago
    Something like this [1] seems like it might work (just go with whichever's cheapest). [1] https://www.aliexpress.com/item/1080p-HDMI-to-Scart-converter-kabel-with-power-supply-for-PS4-DVD-ect-to-old-TV/32823445938.html https://www.aliexpress.com/item/1080p-HDMI-to-Scart-converte...
    - KozmoNau7 9y ago
      All of those cheap converters only output composite video over SCART, no better than the Pi's composite output. Finding one that actually does RGB is either impossible, or really expensive.
  - mark-r 9y ago
    I had never heard of SCART before, but it seems to be just a connector. There appear to be cables that would connect SCART to RCA component video.
    - KozmoNau7 9y ago
      SCART RGB and component are not compatible, I've tried that.
happycube 9y ago
BTW if you have a device that takes component (i.e. PVM's) you can use an HDMI->Component adapter and drive 240P/480I/480P directly from the Pi with no rescaling :) The HDMI output on the Pi is really flexible... you can even coax 2160P24 out of it... at least for static 2D displays.
khedoros1 9y ago
Setting resolution through config.txt is a feature of the firmware, not of any specific OS (although I think there's something weird about how NOOBS and Berryboot map their /boot partitions around, or something...and that's part of why I avoid them). Anyhow, setting resolution in config.txt ought to work everywhere.

mark-r 9y ago

Yes, S-video is better than composite. But RGB component is the best, if your TV has inputs for it.

KozmoNau7 9y ago
My TV has 2x SCART RGB, unfortunately I haven't found any good options for converting HDMI to SCART RGB. Everything is HDMI->component.
- ValentineC 9y ago
  Something like this [1] seems like it might work (just go with whichever's cheapest). [1] https://www.aliexpress.com/item/1080p-HDMI-to-Scart-converter-kabel-with-power-supply-for-PS4-DVD-ect-to-old-TV/32823445938.html https://www.aliexpress.com/item/1080p-HDMI-to-Scart-converte...
  - KozmoNau7 9y ago
    All of those cheap converters only output composite video over SCART, no better than the Pi's composite output. Finding one that actually does RGB is either impossible, or really expensive.
- mark-r 9y ago
  I had never heard of SCART before, but it seems to be just a connector. There appear to be cables that would connect SCART to RCA component video.
  - KozmoNau7 9y ago
    SCART RGB and component are not compatible, I've tried that.

happycube 9y ago

BTW if you have a device that takes component (i.e. PVM's) you can use an HDMI->Component adapter and drive 240P/480I/480P directly from the Pi with no rescaling :) The HDMI output on the Pi is really flexible... you can even coax 2160P24 out of it... at least for static 2D displays.

khedoros1 9y ago

Setting resolution through config.txt is a feature of the firmware, not of any specific OS (although I think there's something weird about how NOOBS and Berryboot map their /boot partitions around, or something...and that's part of why I avoid them). Anyhow, setting resolution in config.txt ought to work everywhere.