Posts for JBarnes

Posted: 11/2/2005 4:03 PM
Post subject: Save-state timing
Quote
JBarnes
Experienced Forum User
Joined: 11/2/2005
Posts: 3
Location: Saint Paul, Minnesota
This is really weird. I can alter the way in which it desyncs based upon the frame in which I record the save state. For example, if I record a save state in frame 29341 and play the movie from there, it desyncs as if I'd watched the movie straight through. If I record a save state one frame earlier or one frame later (that is, in frame 29340 or frame 29342) and play from there, it desyncs much earlier, in a completely different way. The difference in desync times is illusory, though. The desync is actually immediate; it just takes a while to be visible to the human observer. Take the following two images, both depicting frame 29342 of the movie. The image on the left was taken after loading from the save state recorded in frame 29340. The image on the right was taken after loading from the save state recorded in frame 29341. They should be identical. But if you flip back and forth between the images, you'll see a significant difference in the position of the sprites. It's as if the save states are recording Dixie's position incorrectly. (The control state in each frame is what it should be.)
Posted: 11/2/2005 1:54 PM
Post subject: WIP timing
Quote
JBarnes
Experienced Forum User
Joined: 11/2/2005
Posts: 3
Location: Saint Paul, Minnesota
DeHackEd wrote:
Using WIP timing?
Yep.
Posted: 11/2/2005 10:15 AM
Post subject: My own video is desyncing
Quote
JBarnes
Experienced Forum User
Joined: 11/2/2005
Posts: 3
Location: Saint Paul, Minnesota
I'm having desync problems with a movie of my own creation, on the machine I used to create it, with no settings changes. I don't know what's going on. I skimmed the sticky thread on desync problems and messed with my sound settings a bit, but it didn't help. The ROM I'm using is: Donkey Kong Country 2 - Diddy's Kong Quest (U) (V1.1) [!] CRC32: 4E2D90F4 Here is a link to my movie. I'm running Snes9X v1.43+ on Windows 2000. Steps to reproduce:
  1. Play the provided movie on the specified ROM.
  2. Fast-forward (or not) through the first 30800 frames or so; they aren't relevant.
  3. At around frame 30850 or so (needn't be exact), create a save state.
  4. At around frame 30885, the movie desyncs. In particular, observe that Dixie swims into the alcove on the ceiling and gets stuck momentarily.
  5. Now load the save state you just saved. This time, Dixie swims past the alcove as she's meant to; the movie stays synchronized.
In summary, the movie desyncs if you watch it straight through, but if you create a save state just before it desyncs and play the movie from that save state, it never desyncs. Any idea what could be causing this? It seems to me like a bug in Snes9x but, you know, blaming the emulator is the first refuge of the incompetent.