DVD based game ?

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Por Metalion

Paladin (687)

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02-05-2011, 13:59

Hello,

A fellow french MSX fan just pointed out that the MSX system could pilot almost anything through the RS-232 serial port. Some DVD (and even BluRay) players do have a RS-232 serial port which are used as a alternative way to pilot the player (effectively replacing the remote control).

It means that such a DVD player could be used in the same way as a LD player associated with an superimposing able MSX !

The MSX would pilot the DVD player.
The DVD player would output the video back to a superimposing able MSX.
The MSX would add an image (if needed) and send it to screen.

With the easy access we have now to DVD authoring and burning, it could be used for two things :

1 - Make backups of those old LD games
2 - Create new DVD based games

What do you think ?

TongueTongueTongue

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Por Lord_Zett

Champion (426)

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02-05-2011, 14:11

nice idea i will use the printer port easier you kan better select things and load data to the msx by cassete pport

real oldskool

Por enribar

Hero (604)

Imagen del enribar

02-05-2011, 14:52

Great idea!
Also, without having animated graphics or video in background, we can have static stages in hi-res and sprites moving on them.
Or maybe a shot-em-up with vertical or horizontal scrolling scenario.
Videos could be made easely in flash, too, and then converted in mpg.
Very good idea!

Por JohnHassink

Ambassador (4175)

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02-05-2011, 15:00

Also, without having animated graphics or video in background, we can have static stages in hi-res and sprites moving on them.
Or maybe a shot-em-up with vertical or horizontal scrolling scenario.
Videos could be made easely in flash, too, and then converted in mpg.

That would be pretty awesome!
How about streaming sound as well? We could use PCM for that?

Por Manuel

Ascended (10027)

Imagen del Manuel

02-05-2011, 17:52

This won't work, sorry. The thing that an LD has but a DVD not is frame-based access. You can directly search for a certain frame on an LD, which is used extensively in the LD games. You can't do that on a DVD. Unless I'm overlooking something?

Streaming sound: you have the sound from the DVD, right? It is just linked to the video you see Smile (For a good example of a shooter on LD doing this: check out Rolling Blaster.)

Por MäSäXi

Paragon (1776)

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02-05-2011, 18:32

Metalion, you are late, it is an old idea.

http://www.atariarchives.org/bigcomputergames/showpage.php?page=103

(please notice publishing year of the book and please notice that it was described in a BASIC computer game book:))

Por SLotman

Paragon (1133)

Imagen del SLotman

02-05-2011, 23:44

This won't work, sorry. The thing that an LD has but a DVD not is frame-based access. You can directly search for a certain frame on an LD, which is used extensively in the LD games. You can't do that on a DVD. Unless I'm overlooking something?

I'm not 100% sure of this - but I think you can create as many 'chapters' as you want - so you just create chapters on those videos and then you would be able to jump to specific scenes in the movie.

But I think it's not half as fast as an LD is - so it could take a couple of seconds to change from one chapter to another...

Some games, you can even forget about the MSX - and make it work 100% standalone. I once made a penalty shootout game that runs entirely from DVD!

Here, found a picture:
www.icongames.com.br/portfolio/images/dvd03.png

Now, I never saw a DVD with a serial controller... can you guys name some models? Would be nice to see if this can be done afterall...

Por Metalion

Paladin (687)

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03-05-2011, 09:29

Metalion, you are late, it is an old idea
I'm not saying it's a new thing ... It was done with LDs at the time.
What's new though is that it could be done with a DVD player.
And we have now extensive access to DVD authoring and burning on our personal computers.

This won't work, sorry. The thing that an LD has but a DVD not is frame-based access. You can directly search for a certain frame on an LD, which is used extensively in the LD games. You can't do that on a DVD. Unless I'm overlooking something?

I'm not 100% sure of this - but I think you can create as many 'chapters' as you want - so you just create chapters on those videos and then you would be able to jump to specific scenes in the movie.

Of course you can use the chapters on DVD, and you can indeed create as many chapters as you want. About access time, I do not know the difference between LD and DVD but I do clearly remember that on Dragon's Lair (the arcade version) it was clearly not instantaneous !! You had to wait a fraction of a second ... And if this is representative of the access time on a LD, it is very close if not the same as on DVD.

Now, I never saw a DVD with a serial controller... can you guys name some models? Would be nice to see if this can be done afterall...
Here is one : Yamaha BD-S1900
Go to the specs page, and you'll see the RS-232 port listed.
I have downloaded the owner's manual and it is indeed used as a network input to control the player.

And here is some forum talk about other models :
http://www.charmedquark.com/vb_forum/showthread.php?t=6161
http://www.avsforum.com/avs-vb/showthread.php?t=996729

Por wolf_

Ambassador_ (9471)

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03-05-2011, 09:49

One word: content

..or the lack of it..

I think, anno 2011, one should approach MSX developers for what they are doing, not what they could be doing. The past few years show clearly what MSX developers (or at least some of them) are doing: MSX1 ROMs. A handful o' small MSX2 games, but no big RPGs or otherwise big games. And whatever big game may be produced, it'll prolly end up on a large ROM, several megabytes in size, which is probably the best medium for large games anyway.. A DVD MSX game will probably end up being played in an emulator, meaning that your game merely ends up as an .iso rather than a .rom, a .dsk or a .cas. Someone needs to explain me the usefulness of that.. Smile

Por Metalion

Paladin (687)

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03-05-2011, 13:10

I do agree with you, wolf ...

But if not used to develop a new game, it could at least be used to make backups and/or working copies of the LD games.
Of course, the extent of the work needed to modify the code to adapt it to a DVD version is unknown, and prolly important, but nonetheless ...

Tongue

Por Metalion

Paladin (687)

Imagen del Metalion

03-05-2011, 14:01

This won't work, sorry. The thing that an LD has but a DVD not is frame-based access. You can directly search for a certain frame on an LD, which is used extensively in the LD games. You can't do that on a DVD. Unless I'm overlooking something?
An excerpt from the Wikipedia article :

With CAV Laserdiscs the user can jump directly to any individual frame of a video simply by entering the frame number on the remote keypad, a feature not common among DVD players. However, some DVD players have cache features which stores a certain amount of the video in RAM which allows the player to index a DVD as quickly as an LD, even down to the frame in some players.

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