Second Reality good video capture?

category: offtopic [glöplog]
Does anyone have (or can do) a *good* video capture of Second Reality? The best one I can find is this one:


But the chess board doesn't bounce in sync with the music. Some timer issues in later parts I think too.

The one in Mindcandy is correct, but the video quality is not too good for today's standards...

Lossless would be great.
added on the 2012-02-16 04:15:17 by mrdoob mrdoob
here is a rip I did while back, its the best I could get it.

added on the 2012-02-16 05:38:45 by nebadon nebadon
doh.. i just realized the link you posted was to my video.. hehe ah well, I could not get it any better than that, I tried several times, dosbox gets pretty wonky when recording that demo
added on the 2012-02-16 05:50:23 by nebadon nebadon
Which makes me think, has anyone tried kkapturing DOSBox? Is there any reaosn why it wouldn't work?
i ended up using fraps, kkapture can not run dos apps that I am aware of, unless someone has a modded version but I have not seen that, the major issue is with this demo is the resolution keeps changing, and it cause major issues with capturing this as video, in the end i was forced to use fraps and do it in sections, i spent a good day trying to capture this demo properly cause like Mr.doob i could not find a good quality video, I would also be interested if someone could do better than what I did in finding out how they did it, so if you by chance do, please explain how the hell you did it!
added on the 2012-02-16 09:38:22 by nebadon nebadon
http://www.mindcandydvd.com/1/demos perhaps? :) No idea tho if the captures are available online nowadays.
added on the 2012-02-16 10:32:57 by kb_ kb_
The one in Mindcandy is correct, but the video quality is not too good for today's standards...
added on the 2012-02-16 11:19:41 by tomaes tomaes
Huh? A DOS-demo in DVD-resolution isn't good enough? :)
added on the 2012-02-16 11:32:31 by gloom gloom
Resolution isn't everything, you know. ;)
added on the 2012-02-16 12:13:57 by tomaes tomaes
I know -- so please tell me what's wrong with the way the DemoDVD-team spent months capturing the most famous PC demo in history.
added on the 2012-02-16 12:37:56 by gloom gloom
They blacked out the Dolby logo.
added on the 2012-02-16 12:39:09 by Gargaj Gargaj
According to Trace, the lack of the Dolby-logo wasn't his major complaint. :)
added on the 2012-02-16 12:42:47 by gloom gloom
Cooking up a video atm.
You can also just use dosbox's built-in ctrl+F5 :)
My settings are: Gus enabled, ET4000 (s3 seems to glitch during the intro screenmode change), simple core, 386 emulation, 50000 cycles.

Don't worry about the jerkiness while recording, think kkapture-like capping.

Going to do both 4:3 stretched and "vanilla" and downconvert FPS to 60 since the 70fps looks rather awful without frame interpolation on 60hz.
added on the 2012-02-16 13:09:53 by oasiz oasiz
I don't want to disappoint you, but the capture will most probably not be "correct". If that's what you want to go for - fine.
Converting to 60fps is fine with me (do it too), but in reality you should use a elaborate framerate conversion, not just "drop every n'th frame".
Pretty please: before encoding resize the video to double the real capture size, it gives a much better picture because of the way (lossy xvid, mp4) video codecs and also scaling in players work.
added on the 2012-02-16 13:27:10 by raer raer
Yeah, I know.
Upscaled the framerate (strainght dupes) to 420fps and did a blend to 60fps in order to minimize the droprate.
As for 2x blowup, I'll do it, but first I will provide an lagarith encode which is around 1.5gigs~, this means no loss at all.

As for the aspect ratio: I actually blew stuff to 640x400 instead, media players can take care of the scaling since it isn't that hard.
If people REALLY want and need it, I will do the pre-scaled as well :p

And yes, not so sure on how accurate the capture is to the real deal as I don't have an GUS on my old dos system, otherwise I could have tried to capture it from there.
added on the 2012-02-16 13:39:26 by oasiz oasiz
do a 6x blowup so it becomes 1920x1440 :D
added on the 2012-02-16 13:58:50 by Gargaj Gargaj
1920x1200 i mean
added on the 2012-02-16 13:59:20 by Gargaj Gargaj
Sure, I can do that but will you really need it? The advantages above 1280x800 are diminishing though as the source in low-res parts is 320x200 and 640x400 in hi-rez, basically getting less useful as the chrome subsampling issue is already avoided in hi-res parts with 1280x800 (lowres parts are 4x scaled already at this point)

http://lerppu.net/second_lagarith.avi for the 1.5~ gig cap in 640x400 (no loss, converted ~70fps > 60fps) Useful if you want to post-process yourself or just get the "flac-like" video.
Dithered plasma has some small framerate conversion artifacts, not that bad though. I can also give the original dosbox sources with their original resolution/refresh rate if anyone wants.

I'll have the x264 with 1280x800 up once the encoder is done and I get it uploaded.
added on the 2012-02-16 14:12:10 by oasiz oasiz
media players can take care of the scaling

That is the problem. If you uscale a 320x200 video to a 1920 screen, it'll look smudged. If you upscale it BEFORE it looks blockier, and thus more like the original.
Also codecs convert to YUV and downsample color/chroma, e.g. 4:2:2 or 4:2:0, thus color information is lost (color only for every other line vertically and/or horizontally). If you upsample (or encode to 4:4:4) you can at least make sure less information is lost.

Your framerate conversion sounds really good though!
added on the 2012-02-16 14:18:56 by raer raer
media players can take care of the scaling since it isn't that hard.
No, they can't and yes it is.
added on the 2012-02-16 14:21:15 by gloom gloom
Important point: Media player scale up AFTER compression.
added on the 2012-02-16 14:27:08 by Gargaj Gargaj
Depends on the media players you are using, I personally just manually set filtering to either nearest (pixel art, older stuff) or bi-linear (movies etc..) in media player classic (VLC had one as well from what I remember). That way it always uses pixel perfect crisp scaling (no blending!), no matter what the content. I suggest looking it out since it can make so many videos look a lot better! :)
Oh, and MPC has it under: "Option" => "Playback" => "Output" ==> "Resizer: Nearest neighbour"
We actually used that in demowall2010 when we had mixed low-res content and hi-res stuff already at the projector's native resolution, you can't really tell the difference. (Nowdays we do pre-upscale everything to the projector res so there are as little issues as possible.)

Done with the x264, will get it uploaded once I am done with the 4:3 (1600x1200, sorry, no 1920 for you gargaj! the aspect ratio is like it's supposed to be though, so you will just have black bars with 1920x1200 and 1:1 pixel mapping)

Hopefully these three videos will be enough to satisfy people :p
added on the 2012-02-16 14:49:57 by oasiz oasiz
Oh yeah, that media player scaling of course assumes that you have no lossy content (like raw avi). with 2x blasted content like 640x480 stretched to a big screen, there still is a big difference even with the subsampling issues defeated.
added on the 2012-02-16 14:51:20 by oasiz oasiz
here is a dosbox capture in mp4.
was taken at 640x400 and encoded 2x2.
sound comes from the original s3m, not from the emulator.

added on the 2012-02-16 15:17:32 by hfr hfr
Ah, great!
Looks good.
I'll just cancel the encodes then and I'd suggest for people to use that one instead.
added on the 2012-02-16 15:28:41 by oasiz oasiz