Can’t get optimal timings with FFVII

NewHome Forums OSSC, OSSC Pro and DExx-vd isl OSSC – Discussion and support Can’t get optimal timings with FFVII

Viewing 3 posts - 1 through 3 (of 3 total)
  • Author
    Posts
  • #61673
    nullifer
    Participant

      Hello,
      I’ve tried all the optimal settings for FFVII on my 90k ps2 with component cables (same outcome with my scart cable), at all line multplication settings. I’ve tried messing with phase, vth,  h sample rate, and more but the image on text allmost looks bob de-interlaced but horizontally if that helps you understand the issue i’m having.

      anyone been able to dial in optimal settings on this game? if so what did you have to do?

       

      Update: it actually appears to be ALL PS1 games

      • This topic was modified 1 year, 2 months ago by nullifer.
      • This topic was modified 1 year, 2 months ago by nullifer.
      #61678
      Zacabeb
      Participant

        The PS2 uses a different video clock than the PSX, at 54 MHz rather than the ~53 MHz used by the PSX. This means that optimized timings are quite different between the two.

        The target optimized sample rate per line for the PS2 regardless of whether you’re playing PS2 or PSX games should be 858 (NTSC) or 864 (PAL) for 640 pixel wide games, 686.4 (NTSC) or 691.2 (PAL) for 512 pixel wide games, and 490.3 (NTSC) or 493.7 (PAL) for 384/368 pixel wide games. In the optimized modes for 320 and 256 pixel games the sample rate should be set to half that of 640 and 512 respectively.

        The OSSC oversamples 256 and 320 pixel optimized modes at 2x and also does its best to find a multiple of the fractional rates resulting in an integer number of samples per line, discard samples to recover the desired resolution, and repeat the pixels to maintain the aspect ratio the best it can. It’s often not perfect.

        If you can use a higher line multiplication factor with your display and the OSSC set to 4:3 Generic mode, you’ll get a picture that’s oversampled to match the vertical scaling factor as closely as possible. Given that the PS2 has rather high video bandwidth, this can still give a sharp picture and be the best compromise across in-game resolutions, especially in games that switch resolutions between gameplay and menus.

        #61679
        nullifer
        Participant

          4:3 generic works just fine, the problem is the image is soft even at 5x.

          I tried setting 490 for 384 but there is no image then. I also tried the other numbers you gave me but the image still has that same appearance.

          i kind of got the 256 one working, but unfortunately these game use multple resolutions in the 240p range so it’s looking like i might be forced to use generic

          • This reply was modified 1 year, 2 months ago by nullifer.
        Viewing 3 posts - 1 through 3 (of 3 total)
        • You must be logged in to reply to this topic.