How many ms delay is OK?
category: general [glöplog]
PulkoMandy, yes, but I noticed on several occasions already, that watching my tightly-synched demos at a party can a cringe-worthy experience. You spend hours fixing every small detail, and on the big screen it often looks a lot less synchronized. I was trying to eradicate various external factors, for example, I now have the setup to listen to virtual speakers even in headphones, so that I make better choices of sounds to synchronize to (because headphones emphasise completely wrong sounds sometimes).
Nevertheless, the last demo I watched seemed very substantially un-synched during the event. I thought that it may be was a sleepless night and alcohol, but maybe it was not.
Of course, the best synch resolution I can afford on ZX Spectrum is 20ms (one frame), so the talk of 5ms is a bit abstact from my prospective.
Nevertheless, the last demo I watched seemed very substantially un-synched during the event. I thought that it may be was a sleepless night and alcohol, but maybe it was not.
Of course, the best synch resolution I can afford on ZX Spectrum is 20ms (one frame), so the talk of 5ms is a bit abstact from my prospective.
Quote:
FWIW in our game the audio system was running with a fixed latency of 100ms, and it was "okay".
Apparently the average input delay on modern game consoles (i.e. the time it takes from button press to visible action on the screen) exceeds 100 ms, so it matches that at least.
Speccy and any other old platform also suffer when paired with most scalers as +90% aren't really optimized for older hardware. 50 fields, where 1-2 can get buffered and compared to the previous frame in order to create a "nicer hi-res look". Plus it doesn't help that most systems are slightly off-spec from 50 / 59.94Hz so you get some extra buffering going on from there too. All these create some mild drifting and/or artifacts during flashes and such.
These can increase when you record to video and the video file itself has to sync up with screens it's being played back on. Of course there are many different factors in play here and that's just the worst case scenario where everything is slightly off and poor settings cause additional delays when trying to re-sync..
But sync and latency in general is really an issue if not properly prepared for, especially if projector chain is separate from the audio chain at a party.
These can increase when you record to video and the video file itself has to sync up with screens it's being played back on. Of course there are many different factors in play here and that's just the worst case scenario where everything is slightly off and poor settings cause additional delays when trying to re-sync..
But sync and latency in general is really an issue if not properly prepared for, especially if projector chain is separate from the audio chain at a party.
