MAMEWorld >> News
View all threads Index   Flat Mode Flat  

smf
I've been here before
Reged: 01/16/15
Posts: 130
Send PM
Re: Dragon’s Lair Update
01/10/20 08:47 PM


> I am no expert here, but this sounds way too much GB, for a a PAL format as maximum
> resolution.

They are NTSC format.

> 720x480 = 345,600 pixels x 3bytes (YUV) = 1.037 MB / frame

Laserdiscs don't have pixels, it's analogue & they are sampling exactly what is on disc. The decoding of the video into something that can be displayed is done by ld-decode from the huge files. By keeping the large files, they can improve the decoding without having to re-read the laser discs (which may have rotted in the mean time).

There is also quite a bit of data in each frame that isn't displayed.

> 4:4:4 sampling = ~112 GB / hour (uncompressed)

CAV Laser discs, necessary for interactive use, are limited to 30 minutes.

You can't 4:4:4 sample it, it's an undecoded wave form.

> Also FLAC is just a audio codec AFAIK, but it is true that this codec compress audio
> with a 2:1 ratio.

How do you think FLAC can tell whether it's compressing audio or not? It's just taking a stream of numbers with certain characteristics. What he's telling you is that the huge dumps from the laser disc have the right characteristics for FLAC to compress.







Entire thread
Subject Posted by Posted on
* Dragon’s Lair Update anoid 01/06/20 05:06 AM
. * Re: Dragon’s Lair Update Doosh  02/23/20 09:29 AM
. * Re: Dragon’s Lair Update Doosh  03/16/20 01:26 PM
. * Re: Dragon’s Lair Update MooglyGuy  03/16/20 06:00 PM
. * Re: Dragon’s Lair Update Doosh  05/09/20 01:09 AM
. * Re: Audio cassettes ICEknight  05/09/20 10:52 PM
. * Re: Dragon’s Lair Update Doosh  03/16/20 08:38 PM
. * Re: Dragon’s Lair Update The Nate  01/18/20 12:18 AM
. * Re: Dragon’s Lair Update MooglyGuy  01/20/20 07:24 AM
. * Re: Dragon’s Lair Update Master O  01/26/20 06:47 PM
. * Re: Dragon’s Lair Update gregf  01/30/20 09:33 PM
. * Re: Dragon’s Lair Update Bullishunderdog  08/22/20 07:32 AM
. * Bega's Battle, decoded MooglyGuy  01/13/20 02:31 PM
. * Re: Bega's Battle, decoded casm  01/13/20 05:36 PM
. * Re: Bega's Battle, decoded MooglyGuy  01/13/20 06:03 PM
. * Re: Bega's Battle, decoded DomesdayCollector  01/13/20 10:55 PM
. * Re: Bega's Battle, decoded DomesdayCollector  01/14/20 12:38 AM
. * Re: Bega's Battle, decoded Haze  01/14/20 02:23 PM
. * Re: Bega's Battle, decoded agard  01/14/20 12:46 AM
. * Re: Dragon’s Lair Update agard  01/06/20 05:18 PM
. * Re: Dragon’s Lair Update gregf  01/06/20 05:52 PM
. * Re: Dragon’s Lair Update pablopelos  01/08/20 04:41 AM
. * Re: Dragon’s Lair Update agard  01/07/20 12:53 AM
. * Re: Dragon’s Lair Update gregf  01/06/20 05:26 AM
. * Re: Dragon’s Lair Update Antny  01/07/20 06:28 AM
. * Re: Dragon’s Lair Update WarrenO  01/08/20 01:55 PM
. * Re: Dragon’s Lair Update uman  01/09/20 05:10 PM
. * Re: Dragon’s Lair Update R. Belmont  01/14/20 05:03 PM
. * Re: Dragon’s Lair Update DomesdayCollector  01/15/20 12:25 AM
. * Re: Dragon’s Lair Update Olivier Galibert  01/15/20 12:04 AM
. * Re: Dragon’s Lair Update ICEknight  01/10/20 09:18 PM
. * Re: Dragon’s Lair Update VirtuaIceMan  01/11/20 04:27 PM
. * Re: Dragon’s Lair Update smf  01/10/20 08:47 PM
. * Re: Dragon’s Lair Update MooglyGuy  01/09/20 07:02 PM
. * Re: Dragon’s Lair Update jonwil  01/09/20 01:36 PM
. * Re: Dragon’s Lair Update gregf  01/07/20 10:33 AM

Extra information Permissions
Moderator:  John IV, Robbbert, Tafoid 
0 registered and 29 anonymous users are browsing this forum.
You cannot start new topics
You cannot reply to topics
HTML is enabled
UBBCode is enabled
Thread views: 4225