oompa loompa
I AM THE GOVERNATOR 
"Git 'Er Dun!"
Posts: 1,301
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Post by oompa loompa on Dec 11, 2004 11:52:04 GMT -5
okay, if basiegaxorz were to have support to play movies, would anyone use movies in their games? =P i'm just asking because i still have a lot of ram left on the 68k coprocessor, and want to add more features to it, so fmv would be pretty decent. there would be lots of limitations on movies though, 32 colors per frame, and i'm thinking of scaling all videos down to 160*112 since the sega cd drive isn't really fast 56x like todays drives. i dunno, any suggestions or ideas would be appreciated  |
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Post by vyeyendra on Dec 15, 2004 7:43:04 GMT -5
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Post by Fmn64man on Dec 30, 2004 20:21:08 GMT -5
Yeah good idea, go for it! It was my original suggestion. |
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Post by Fonzie3 on Dec 31, 2004 5:27:24 GMT -5
I don't know but it should be a good idea to use mdsuper archiver to store the frames in CD (using lzss compression).
Lzss compression is able to compress + 60 up to +90 % of a standard tiled picture.
Since FDarkangel wrote a super fast lzss asm decompressor....
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Post by Tom Maneiro on Dec 31, 2004 10:07:25 GMT -5
LZSS is based on LZ77 or LZMA?
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Fonzie
Moldy Popcorn
h?h
Posts: 31
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Post by Fonzie on Dec 31, 2004 10:37:14 GMT -5
Lz77 i suppose.
Stronger than rar (30%) and zip (40%) on classic genesis files.
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oompa loompa
I AM THE GOVERNATOR
"Git 'Er Dun!"
Posts: 1,301
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Post by oompa loompa on Jan 4, 2005 19:47:16 GMT -5
hehe, the archiver is great =P
i dunno how i'll implement this. Maybe have FMV movies stored as SCD programs, so its easy to imclude in basiegaxorz. how does your archiving system work with the sega cd? does it store data in iso9600, or whatever? basiegaxorz just stores in straight clusters, no allocation tables
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Post by Tulio Adriano on Jan 5, 2005 6:09:21 GMT -5
There is a ISO compatibilty mode that will write each file stored in the begining of the cd sectors. It will also generate a file toc to help your program to find the archived file. I developed the tool but Fonzie can explain it better than me. ;D Seeya |
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oompa loompa
I AM THE GOVERNATOR
"Git 'Er Dun!"
Posts: 1,301
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Post by oompa loompa on Jan 5, 2005 19:28:52 GMT -5
one drawback though: audio
i can't be reading video data and audio data from the cd-rom at the same time, unless i code a really good player like the cinepack one, which i doubt i can do
i think the z80 is just fine for audio stuff, so no wave or mp3 support then =P
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Post by MaskofDestiny on Mar 4, 2005 1:04:00 GMT -5
Doing audio along with the video isn't that hard. The PCM chip on the Sega CD is much easier to use than the Genesis DAC since you don't need to time everything manually. The FMV code in Sonic CD is dirt simple.
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Fonzie
Moldy Popcorn
h?h
Posts: 31
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Post by Fonzie on Mar 6, 2005 18:42:41 GMT -5
"I developed the tool but Fonzie can explain it better than me. "
Héhé, the mdsa file system can be used for a movie ...
Interlacing one frame of lzss picture (+-6KB for a full screen 320*224 pic) and one decompressed frame of sound...
Well, in fact, it should be easy to design a special movie system using lzss...
Assuming a sector is 2KB; we fix 3 sectors of picture , one of sound. That makes 4 sectors per frame...
The only limit is to develop a codec (for virtual dub, it should be perfect) to translate the movie into the good segacd format...
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Fonzie
Moldy Popcorn
h?h
Posts: 31
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Post by Fonzie on May 5, 2005 9:36:10 GMT -5
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oompa loompa
I AM THE GOVERNATOR
"Git 'Er Dun!"
Posts: 1,301
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Post by oompa loompa on May 12, 2005 12:08:28 GMT -5
wow, very very nice =D
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