LASERDISC Launcher for OpenMSX

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Door giuseve

Paladin (733)

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11-03-2012, 12:13

HI to all,
I've made a small frontend to launch LASERDISC GAMES.
I used:
OpenMSX
Pioneer Palcom Bios
Laserdisc Isos in .ogv format
A small EXE that manage all theese.
I'm thinking about a name for the whole package: all ideas are welcome.
Could someone be interesting in download it?
Regards

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Van Gradius2

Hero (574)

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11-03-2012, 16:08

Keep in mind those emulated games aren't even close to the real thing.

Van Manuel

Ascended (15686)

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11-03-2012, 22:41

Gradius2: What do you mean?

Van Gradius2

Hero (574)

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12-03-2012, 19:11

It hangs a lot, it search for wrong frames/places, the video quality is crap (ogv was used), there are a lot ghosting & interlace issues on video.

Can be more, I just used 2x the emulated thing.

Van Manuel

Ascended (15686)

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12-03-2012, 21:16

Weird, it doesn't hang here, no wrong frames, and the video quality looks just very good...

So, I don't understand what has gone wrong. The emulation was written by Sean Young, who actually owns the whole setup and I think he thinks it's very close to the real thing.

Which games give you problems? Which openMSX version did you use? Did you use the correct dump? (There are some older ones with wrong metadata.)

Van Gradius2

Hero (574)

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12-03-2012, 23:29

I have all those games, so I can compare, I know what I'm talking about, plus years before I did a lot professional remastering from LDs to DVDs.

AFAIK, Sean just captured them, the openMSX team did the rest.

The interlace/ghosting/tracing problem is present on ALL games.  The hang/wrong frames/scenes, I don't remember them all, but I recall Badlands begin 1 of them.

To be close to REAL thing it should be used MPEG-2, but he told me about royalties or something like that, well I call that BS since the team behind Dragon's Lair and many others, did all in MPEG-2 w/o any problem or restriction.

Van Gradius2

Hero (574)

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12-03-2012, 23:41

Besides, RW, FW, SEARCH and PLAY using MPEG-2 is MUCH faster and better than crappy ogv.

The other guys:
http://www.daphne-emu.com

As for version I used the official: 0.8.0 back there.

Van seanyoung

Resident (48)

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13-03-2012, 13:02

Hi Gradius2,
1) There are some ghosting and interlacing problems in Badlands. I've made a new capture which processes it differently which solves problems with the original ogv, I haven't shared it yet.
2) I don't know what problems you talk about with the other files. Some examples would be appreciated.
3) mpeg 2 isn't that great. Why would you want to use a patent encumbered video codec from the '90s?
4) Patent issues are real and certainly not BS. Also I would like openmsx to be part of debian, ubuntu and fedora repositories.
5) Seeking speed isn't great in ogg formats, but it's not terrible either. The more important point is that real laserdisc hardware spends WAY LONGER seeking that either of these. openmsx purposely implements delays like a real laserdisc player. If you don't want this to happen then do a "set fullspeedwhenloading true" in openmsx. So the ogv format is not a problem.
6) There certainly are better video codecs than theora, but this would only improve the file size, not the video quality. The raw captures and compressed files do not look much different. I would like to use VP8 or webm.
7) I've used some filters in my latest captures which removes some of the noise, it does look a bit better.
8) I've captured and compressed all files myself.
9) Some ogg seek improvements were made in 0.8.2 -- there were some bugs in it. Please let me know if it is still buggy or hangs.
Sean

Van seanyoung

Resident (48)

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13-03-2012, 12:55

Hi Giuseve,
Your launcher sounds very interesting. Would you mind sharing it with me/everyone?
Thanks,
Sean

Van Manuel

Ascended (15686)

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13-03-2012, 19:30

10) Sean is part of the openMSX team and implemented all laserdisc functionality himself.

Van mesiasmsx

Prophet (3150)

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13-03-2012, 19:44

When the games, the audio sounds falls, is this normal?

example: Whawhawhawhawhy?

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