VOGONS


First post, by veloopity

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this is not really a question related to Dosbox but I thought that if anywhere, I would get help here most likely.

I have this old MSDOS fractal animation program that I wrote in the early nineties. (http://www.mpeters.de/mpeweb/hop/)
It is very slow under Dosbox the last time I tried, it is much better under native DOS or W98 in fullscreen mode.

Question: I would love to capture the animations created by this software losslessly in realtime to a video file, AVI or similar. I guess I probably need some kind of hardware solution to do that ... or does anyone know a software (possibly under W98) that can grab the video output of a DOS fullscreen in realtime?

thanks

-Michael
www.michaelpeters.de

Reply 1 of 8, by gidierre

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veloopity wrote:

this is not really a question related to Dosbox

actually, I guess this should best become the dos section here

or does anyone know a software (possibly under W98) that can grab the video output of a DOS fullscreen in realtime?

afaik there's no such thing, but maybe someone knows better

I can only think of using such TSR apps as Pcxdump or ScreenThief or Grabber et al.
to dump the dos screens into a bunch of .pcx images

does that make do ?

Reply 2 of 8, by wd

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It is very slow under Dosbox

There's a readme coming with dosbox, believe it or not.
So for more speed use core=dynamic and cycles=max,
vid cap is also mentioned in the readme.

Reply 3 of 8, by veloopity

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I can only think of using such TSR apps as Pcxdump or ScreenThief or Grabber et al. to dump the dos screens into a bunch of .pcx images - does that make do ?

not really ... I'm looking for realtime video grabbing

-m

Reply 4 of 8, by veloopity

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@wd:

There's a readme coming with dosbox, believe it or not.

I know 😀

So for more speed use core=dynamic and cycles=max,
vid cap is also mentioned in the readme.

well I haven't tried the latest versions, but a year or two ago I ran HOP in Dosbox and it was painfully slow. Maybe I should try again.

-m

Reply 5 of 8, by gidierre

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veloopity wrote:

not really ... I'm looking for realtime video grabbing

-m

yeah I can see

maybe it's not worth much
but the nearest thing to it that crosses my mind is :

if you know/remember Grand Prix 2 (dos game from 1996 iirc by G. Crammond)
well then René Smit and Frank Ahnert made an editor for it called Gp2Lap which among a whole lot of incredible features could grab a full lap into a video

you could check its ways out
I mean
as long as it would be providing a way to dump the screens to a real .avi or so vs. a series of .pcx
it's true that the very game made for a chance to capture a video (in practice, a lap replay) to begin with

what about that

Reply 6 of 8, by ripa

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well I haven't tried the latest versions, but a year or two ago I ran HOP in Dosbox and it was painfully slow. Maybe I should try again.

You can increase dosbox's emulated cycles beyond the capability of your computer, but the recorded video/audio won't have any of the negative effects (stuttering audio, low fps). Set core=dynamic and cycles=100000 for example and record video using that. Even if your computer can't handle in real-time emulation, the recorded video should be fine.

Reply 7 of 8, by wd

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well I haven't tried the latest versions, but a year or two ago I ran HOP in Dosbox and it was painfully slow. Maybe I should try again.

Seems like you neither read my reply nor the readme.
Thankfully ripa repeated the necessary stuff though.

Reply 8 of 8, by veloopity

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ok I'll try again then - thanks so far !!

-m