OSSC image and sound cutting in/out?

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  • #22630
    1985jms
    Participant

    Hello!
    First I want to apologize incase my English isn’t perfect, please feel free and ask me to specify a little more, incase there is something unclear.
    I tried to seach the forum to find an answer to my problem, but no luck this time.
    So… I am using the latest OSSC with SCART cables and I am having a slight problem, especially with my SEGA Saturn.
    For example: When I play Daytona USA, I make my slections on the main menu: “game mode > Selecting car > selecting race track” and then the game proceeds to load the race with a screen saying “gentlemen, start your engines”, with a voice repeating the same sentence.
    The problem is the transitions between the menu > game > going back to scoreboard after the race.
    It seems that the image and sound cuts off during these transitions with a significant delay.
    What I mean is when the game says “gentlemen, start your engines” the OSSCs image and sound activates with a delay, so I only get to hear only half of the announcers voice.
    Same problem occurs after the race when the announcer says: “Now list your name, with the other champions!”. The sound and image comes late and I can only hear “other champions!”.

    Hopefully this makes atleast somekind of sense. Maybe this is something you can adjust from the OSSC menu, but unfortunately I am not familiar with all the tweaks and options the device offers. I am more of a gamer, not so much of a technical person.
    Thank you!

    #22636
    nmalinoski
    Participant

    If it’s what it sounds like, that game uses 240p for gameplay and 480i for menus; and, when the video mode changes, sync drops briefly. On CRTs, the displays with which the Saturn was expected to be used, video modes can change very quickly, so switching between the two modes frequently can be done without inconveniencing the player.

    Unfortunately, when sync drops over an HDMI interface, all of the HDMI devices between the source (the OSSC in this case) and the display need to reestablish sync, and it usually takes a second or two for everything to come back. From what I’ve seen, games for HDMI consoles tend to output at a single resolution for everything, so players won’t be inconvenienced with the time it takes to recover from a mode switch/sync drop.

    Unfortunately, there isn’t much you can do–even the Framemeister isn’t immune. The only device I’m aware of that can make those video modes seamless is a presentation switcher, which will maintain a consistent resolution and framerate on the output regardless of input or lack thereof, but at the cost of dropped/inserted frames (which cause video judder) and added lag from the scaler. Analog presentation switchers are affordable, but will not handle 240p properly; and I’m assuming HDMI presentation switchers are recent enough that they’re significantly expensive.

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