Another damn video question

[Gossoon]

has anyone noticed that the character models in the Barricades movie sometimes move jerkily (yes, that is a word)? now, i know that since this is a VIDEO, the reason for this should not really be a matter of hardware. taking that logic, does this mean that the comp that ran the demo sucked or that something is flawed in the renderer or whatever? i'm not a software guy, thus i may be speaking out of my ass. you tell me.

 

[Black-Falcon]

I think it was a bug in the tech demo at the time. Not sure if they fixed it or not.

 

[nsxownzme]

i heard it's bink's fault.. idk, and i dont know if anyones here really knows.

 

[freddythefrog]

Its surely is binks fault. The sync in the vids wasnt captured perfectly by the bink software, best example for that is the crowbar issue in traptown, where wood brakes before it was hit.

 

[Feath]

Originally posted by freddythefrog
Its surely is binks fault. The sync in the vids wasnt captured perfectly by the bink software, best example for that is the crowbar issue in traptown, where wood brakes before it was hit.

Nothing to do with BINK.

It because the Demo playback optimisations by Valve. It causes stuff to break before it was hit and stuff like that. They've probably changed this.

They didn't expect anyone to do a frame by frame analysis of the videos.

 

[Pol]

It because the Demo playback optimisations by Valve. It causes stuff to break before it was hit and stuff like that. They've probably changed this.

correct, though i doubt its been changed, since its a technical problem, in order to record and get a decent framerate

 

[commando]

have any of you noticed....in traptown at the start. when you start to walk towards the door, the COMBINE SPAWNS. he jus appears in the background. and you can tell he spawned cause he appears and falls (about an inch) to the floor. then he shoots at you. go look close you will see.

 

[Gossoon]

Originally posted by Feath
Nothing to do with BINK.

It because the Demo playback optimisations by Valve. It causes stuff to break before it was hit and stuff like that. They've probably changed this.

They didn't expect anyone to do a frame by frame analysis of the videos.

that is kind of insane when you think about it. how could valve not expect this level of analysis? no footage has been this combed-over since the Zapruder film. and i'm hoping that this "optimization" is the reason for the awful syncing in the Lab video. it looked like a bad, or a good, kung fu flick.

 

[Direwolf]

Dunno, my syncing is dead on.
Your video can get that if you have a memory shortage though.

 

[Gossoon]

i've got 768 MBs. maybe that isn't a lot. but it can handle full-motion DVD, so i don't know why the hell it couldn't play a GAMEPLAY VIDEO.

 

[Feath]

Originally posted in the Valve Info Thread
The physics behaviors you point out are an interpolation artifact during demo playback, not of the physics system. They aren't there when you play. It didn't really occur to us that people would be doing a frame-by-frame analysis of shaky cam video of demo playback. Demo playback is NOT even vaguely pixel or frame accurate to actual gameplay - if you want that you need to make a movie instead and be really careful about how you manage time in your production pipeline (and you will have to ignore pixel and motion artifacts introduced by your compressor). The current demo playback behavior is good enough for our uses.

 

[Gossoon]

oh. thanks.
there really is nothing new under the sun.

 

[Dagobert]

that is kind of insane when you think about it. how could valve not expect this level of analysis?

Ummm, maybe they weren't able to fix it in time, and there were much bigger bugs to fix?