Author Topic: SEQ file creation and such  (Read 1670 times)

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Offline lskovlun

Re: SEQ file creation and such
« Reply #15 on: August 17, 2015, 07:08:51 PM »
It's possible that the KQ6 version simply does not support that video mode. KQ6 switches to a different video mode (some sort of Mode-X, 360x480 perhaps?) using a kernel call before playing the intro. I wanted to try this in SCI32, but my GK1 installation is acting up at the moment (due to my ScummVM work I often have weird files lying around in my game directories that sometimes break things; no jokes please). I even wanted to say I'd tried it, but then it occurred to me that that was ScummVM, and it works there, as you note.

What video mode is your SEQ authored for? I guess 320x200?

Offline Kawa

Re: SEQ file creation and such
« Reply #16 on: August 17, 2015, 07:50:40 PM »
320x200, yes. Video mode, huh? I can't imagine that being an issue with KQ6 switching between SEQ and pic/view like that... Too bad I can't research this until I wake up tomorrow.

Also, I didn't specify but Template played THEEND in tiny thumbnails too.

Edit: another thought. If KQ6 changed to 360x480 (what kinda res is that?) DOSBox's window would've resized. And the SEQ files seem to be 320x200. Or rather, FS1 is and the others work fine in my player, which is 320x200.

Editē: It is a SetVideoMode call, but it's not 360x480.
« Last Edit: August 18, 2015, 05:21:32 AM by Kawa »

Offline lskovlun

Re: SEQ file creation and such
« Reply #17 on: August 18, 2015, 07:43:40 PM »
320x200, yes. Video mode, huh? I can't imagine that being an issue with KQ6 switching between SEQ and pic/view like that... Too bad I can't research this until I wake up tomorrow.

Also, I didn't specify but Template played THEEND in tiny thumbnails too.

Edit: another thought. If KQ6 changed to 360x480 (what kinda res is that?) DOSBox's window would've resized. And the SEQ files seem to be 320x200. Or rather, FS1 is and the others work fine in my player, which is 320x200.

Editē: It is a SetVideoMode call, but it's not 360x480.
360x480 was just something I wrote. Mode X is typically either 320 or 360 times 240 or 480. Someone commented elsewhere (I can't recall where) that an additional benefit in that Mode X is planar, unlike standard VGA, and that this could be beneficial for a video player. Mode X is actually a standardized name:
https://en.wikipedia.org/wiki/Mode_X
EDIT: It could just be planar 320x200... If the file format does not reflect the planarity of the display mode (as would seem to be the case), then nothing needs to change apart from the two added calls to SetVideoMode. If it does, well maybe that is the source of your color problem.
« Last Edit: August 18, 2015, 08:08:43 PM by lskovlun »

Offline Kawa

Re: SEQ file creation and such
« Reply #18 on: August 18, 2015, 08:05:08 PM »
Quote
It is possible to enable planar memory in standard 320x200 mode, which became informally known as "Mode Y" in the Usenet rec.games.programmer group.
Considering the resolution in KQ6 doesn't seem to change (DOSBox stays the same size) and the SEQ files are most certainly 200 pixels tall, this struck me as minorly relevant.

At any rate, it seems you can run the whole damn game in planar mode, but that breaks transitions. Perhaps other things too, like... scaling, maybe? I haven't tried. There's a bit of an interlace-like ghosting effect sometimes where you can kinda see the planar layout, but other than that and the lack of transitions, things seem playable enough in planar mode.

Offline Collector

Re: SEQ file creation and such
« Reply #19 on: August 18, 2015, 11:26:15 PM »
Don't know if this will help, probably not, but the DOS SEQ intro has a stuttering problem in DOSBox. This can be fixed by using the VGA320.DRV from the GK1 demo.
KQII Remake Pic

Offline Kawa

Re: SEQ file creation and such
« Reply #20 on: August 19, 2015, 05:35:21 AM »
Confirmed on both counts.

Offline MusicallyInspired

Re: SEQ file creation and such
« Reply #21 on: August 28, 2016, 09:58:30 PM »
Bump. What do you suppose the framerate of a SEQ would be?
Brass Lantern Prop Competition

Offline Kawa

Re: SEQ file creation and such
« Reply #22 on: August 28, 2016, 10:18:45 PM »
I think it depends on the parameter you pass, but considering a few things, 15 or thereabouts sounds good.


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