A Laserdisc really does not need time base correction, although a TBC will keep the sync stable through bad dropout conditions.
For vhs and other helical scan analog video formats, it really is a must because they make a mess out of the sync signal, even after restoration by the vcr. Sent from my iPhone > On Aug 26, 2016, at 8:09 AM, Derek Morton <[email protected]> wrote: > > Gregg, > > How would this work for digitizing Laser Discs? I have a handful of discs > which have never been released on DVD or Blu-Ray and it would be nice to get > the content in the digital domain. I have no idea about the whole time base > correction aspect… Is it required? > > There are likely better modern solutions, but I am not sufficiently motivated > (too lazy) to look. > > Derek > >> On Aug 26, 2016, at 5:49 AM, 'Gregg Eshelman' via Vintage Macs >> <[email protected]> wrote: >> >> Got a Quadra 840AV or a 110Mhz NuBus PowerMac or clone? I have a Media 100 >> system I've no use for. >> >> Both NuBus boards, the interconnect cables, ADB dongles, breakout box, >> software and manuals. Even has a Media 100 sticker to put on the inside of >> your window or glass door to tell your clients you're using some hot new >> technology to digitize their VHS tapes. ;) >> >> It will work in many different NuBus Macs but the faster Quadras or NuBus >> PowerMac models are preferred. >> >> One gotcha though, due to never fully fixed hardware issues with the NuBus >> PowerMacs (and all the clones) you cannot use a NuBus SCSI card with the >> Media 100 hardware. However you *can* use a G3 upgrade, except for having to >> turn it off and run on the 601 for capturing video. The G3 will speed up >> rendering, effects and outputting to digital video files. >> >> In a Quadra it will work with any of the NuBus SCSI cards from ATTO, FWB and >> others. In a PowerMac the only way to get up enough speed on storage to hit >> the minimum 4 megabytes per second sustained write for 150K per frame (best >> quality) is to use software like FWB Hard Disk Toolkit to RAID 0 stripe >> across multiple drives on the internal and external SCSI. I tried a single >> 17 gig drive that had the specifications, and the internal bus is faster, >> with a theoretical speed above the minimum - but something always came along >> after a bit to steal bandwidth and drop it below 4 megabyte/sec and *pow* >> instant stoppage. >> >> It also really needs a professional VTR (VHS, BETA, Betacam etc) with a time >> base corrector and RS-422 serial for remote control. The system *can* be >> used with a manually operated VCR, even without a TBC - but it will stop >> capturing at the slightest problem with synch. There's no frame buffer nor >> any built in hardware correction in this first generation of Media 100. A >> TBC, built into the VCR or as an in between unit, will be a huge help for >> manual operation. It has to be a full frame TBC, the line type doesn't fix >> all types of sync problems. >> >> With the right stuff to 'wrap around' the M100 you can get exceptionally >> good recordings from VHS and Beta tapes, at 640x480 for NTSC (slightly >> higher resolution for PAL). This equipment was used back in the day for >> editing and effects for television shows. >> >> It has inputs for Composite, S-Video and Component, and balanced (XLR) and >> unbalanced stereo audio inputs and outputs. It has the Component video >> daughterboard. Those tricky folks at Media 100 made *everything* optional on >> this. Everything except the component video function was actually built into >> the hardware and various dongles plugged into the ADB port between Mac and >> keyboard unlocked the functions. There was a basic dongle that limited the >> system to draft mode, only able to capture and output at lowest quality and >> pretty much limited the software to basic cutting and generating edit >> decision lists. >> >> The EDLs would then go to the people higher up the editing chain, entrusted >> with systems with the Full Deal dongle so they could do the fancy stuff. If >> I remember right, I'm sure there's a Full Deal dongle with this. There's >> also one from a newer M100 that when plugged in pops up "Power Input" on the >> splash screen that lists the enabled functions. "Power Input" is not listed >> in the manuals for this version. >> >> Or it's just some neat stuff for the collector of old Macintosh gear that >> wants something different. > > -- > -- > ----- > You received this message because you are a member of the Vintage Macs group. > The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our > netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml > To post to this group, send email to [email protected] > To leave this group, send email to [email protected] > For more options, visit this group at > http://groups.google.com/group/vintage-macs > > Support for older Macs: http://lowendmac.com/services/ > --- > You received this message because you are subscribed to the Google Groups > "Vintage Macs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- -- ----- You received this message because you are a member of the Vintage Macs group. 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