The setup of k-lite codec pack lets me choose between ffdshow DXVA and MPC-HC internal DXVA for H.264 and VC-1.
What should I choose, and why?
I mostly use MPC (which comes with k-lite) to play videos, but I'd like to know if choosing its internal decoder is best, and if it will make DXVA unavailable to, say, VLC.
Some implimentations work better with some graphics cards - and the best way to work out which is better is to look up that particular graphics card.
Off the top of my head on windows 7 and older intel IGP implementations, the DXVA codec built into windows worked best, otherwise I used ffdshow. In this specific case, there should be no difference. I'd suggest using the default unless there's a specific issue with one of them. The differences in any case should be minor.
internal lav: a fork of ffdshow decoder, new and simple interface, cannot be updated without updating the player because it's an internal decoder ffdshow: the old decoder, advanced settings, can be updated by updating ffdshow codec because it uses the external ffdshow decoder
Just forget about K-Lite at all. Use CCCP-Project's player. K-Lite have always had a fishy reputation.
(As a sidenote, CCCP's MPC-HC uses the ffdshow DXVA implementation, not the internal one.)
