(Then again, there's doubtless some 'cheap and nasty' production being done also.) Though there are people who crunch down DVD too. The DVD production company has essentially already 'done the work for you' using some (hopefully) pretty much state of the art equipment and experts steeped in the minutia of video compression. I think it rather begs the question, why bother buying Blu-Ray if one intends to crunch it down to something 'less good' - why not save time and money and buy DVD instead.

Whether one can discern the difference is of course an entirely subjective judgement. The compression mechanisms are inherently 'lossy' (some detail has already been lost in the original production of the BD/DVD). Trans-coding means (effectively) 'rendering' out the source then re-encoding it to something smaller (which is a CPU intensive process as there's lot's of maths involved and explains why it takes a while to run.)īecause of the way the compression mechanisms work, it is highly unlikely you'd get a pixel-for-pixel identical copy of the original if you transcode. When people talk about compression, they are usually referring to trans-coding to yield a smaller file. Incidentally, all common media are 'compressed' - about the only form that isn't are audio CD's which use PCM encoding. If they are new titles, sometimes it takes is a while to 'catch up' with the latest mechanisms.

MakeMKV has to break the encryption of any discs that have it.

Makemkv rip blu ray disc