>>11837451>Laser Disc video is pretty much uncompressed in quality.>>11837476>43GB of RAW data from a game released in 1995. Suck it, Blu-Ray!Laserdisks were analog, making them very tricky to dump without any quality loss unless you want absurd filesizes like this. They didn't hold 43GB of "data" any more than you can call an audio recording on a cassette data. It's just a capture of the laser itself an absolutely absurd sampling rate that is well beyond it's limits to make sure nothing that could have ever possibly read is not recorded in the capture.
>>11837538That's exactly what the Nyquist–Shannon sampling theorem is for
>The theorem states that the sample rate must be at least twice the bandwidth of the signal to avoid aliasing. In practice, it is used to select band-limiting filters to keep aliasing below an acceptable amount when an analog signal is sampled or when sample rates are changed within a digital signal processing function.Basically, if you want to ensure that you capture the entire signal and not lose any part of it, you want to sample it at more than double of it's original rate. If you had a 20K signal for example, sampling it at 44.1K would ensure you capture all of it.
>>11837563According to the Domesday Duplicator (A device meant to tap into specific LD players to extract the disk's data like this) github page:
>The Domesday Duplicator is a LaserDisc capture focused, USB 3.0 based DAQ capable of 40 million samples per second acquisition of analogue RF data at 10-bits resolution, the data being in generic PCM style stream format is ready for FLAC compression or direct use with a wide range of decoders.>The Domesday Duplicator captures the raw RF signal from a laserdisc player’s laser. The player provides the mechanical tracking, focus and movement of the laser over the disc’s surface and the duplicator records the signal. This effectively turns the laserdisc player into a highly accurate optical scanner.
