ChanServ changed the topic of ##yamahasynths to: Channel dedicated to questions and discussion of Yamaha FM Synthesizer internals and corresponding REing. Discussion of synthesis methods similar to the Yamaha line of chips, Sound Blasters + clones, PCM chips like RF5C68, and CD theory of operation are also on-topic. Channel logs: https://freenode.irclog.whitequark.org/~h~yamahasynths
<HXLNT>
Thanks, Stilett0.
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<KitsuWhooa>
<cr1901_modern> I'm waiting for a domesday86-like project to tap into a VCR's raw output and capture VHS from those signals <-- best you'll get is chroma and luma anyway if I'm not mistaken
<KitsuWhooa>
so it's probably not too worth it
<KitsuWhooa>
(I'd love to be wrong)
<cr1901_modern>
Hrm, maybe I should just save up for a VCR that's good, so I can capture to hard disk. Rather than trying to be cute
<KitsuWhooa>
Get one that's S-VHS and plug it in to a bt878 card on a linux machine. It'll be as good as it gets :p
<KitsuWhooa>
over S-Video that is
<cr1901_modern>
4.5MHz NTSC bandwidth * 8 bits DAC * 3600 secs * 6 hours = ~100GB of raw data for a single tape
<cr1901_modern>
and 8 bits is probably not good enough
<KitsuWhooa>
fwiw, there were some VCRs that had actual RGB out
<KitsuWhooa>
but from what I remember they just converted the chroma and luma to rgb, which is a bit pointless
<cr1901_modern>
Oh right, I have to sample at twice the b/w. So... ~180GB
<KitsuWhooa>
yup :p
<KitsuWhooa>
If you really want raw data though it's totally feasible
<KitsuWhooa>
doing something with it is another story :D
<cr1901_modern>
I have literally 50 tapes to sample. One of them dates back to 1992
<cr1901_modern>
(although that one is already preserved on DVD)
<KitsuWhooa>
The way I think of it is that the VHS tapes that are worth archiving are usually home videos
<KitsuWhooa>
There are of course exceptions
<cr1901_modern>
Well those too, but like hell I'm sharing those w/ the world
<KitsuWhooa>
yes :p
<cr1901_modern>
Dad has some 8mm film... I belive all of it was digitized, but the projector still worked last we tried
<sorear>
copy them to more durable media and throw them in a 100 year time capsule wcpgw
<cr1901_modern>
what could pawsibly go wrong- famous last words by an irritating 90s mascot
<KitsuWhooa>
:D
<KitsuWhooa>
I have quite a few VHS tapes I've been meaning to archive, but I found out the bt878 can't sync well, so I instead attempted to add support on the linux kernel for another card I had, and I wanted to upstream it, so I wanted to get DVB working...
<KitsuWhooa>
but I never got it working, and I got distracted
<KitsuWhooa>
so the tapes are still sitting here :p
<cr1901_modern>
That reminds me... need to finish rsyncing DVD-RWs I have that are 10+ years old
<KitsuWhooa>
rsync?
<cr1901_modern>
old backups
<KitsuWhooa>
Ah
<sorear>
(not actually sure if there's reasonably commodity storage media that would hold data for 100 years ... maybe flash would be good enough if stored cryogenically?)
<KitsuWhooa>
Isn't there some kind of fancy disc that does?
<KitsuWhooa>
M-Disc is what I'm thinking of
<cr1901_modern>
These old discs have some good stuff like... *checks* FF3 savestates/srm files, my old SMB hack in SMBUtil
<cr1901_modern>
and files from high school which were completely irrelevant by the time I backed them up
<cr1901_modern>
oh and a few babby's first torrents
<KitsuWhooa>
:p
<sorear>
"trade secret", pass
<KitsuWhooa>
Does it matter?
<cr1901_modern>
We can't even figure out the 11 herbs and spices in KFC. I don't think we're gonna figure out M-Disc
<sorear>
nearly all of the the citations are from either the company or commercial "reviews"
<KitsuWhooa>
Oh you mean about their claims?
<KitsuWhooa>
sure :p
<sorear>
the nice thing about selling a "1000 year DVD" is that if you're selling BS, nobody will be able to call you on it in this life
<KitsuWhooa>
but then there's DVD-Rs that have sat for like 10 years and are now almost unreadable :p
<KitsuWhooa>
thank fuck for ddrescue
<cr1901_modern>
Right, I don't want my old files, useless as they are, to disappear
<KitsuWhooa>
Now I wonder if anyone has reverse engineered the sony optical assy pcb that's on the sega cd 2....
<KitsuWhooa>
it's that nasty pcb that has the components printed on it
<cr1901_modern>
l_oliviera would be the person to ask about that. If he ever decides to log in