View Single Post
Old 2nd October 2017, 07:26   #26508  |  Link
mparade
Registered User
 
Join Date: Nov 2013
Posts: 577
Quote:
Originally Posted by AmigaFuture View Post
If it were lossless you'd have a much larger file than what is being imported. Lossless means without compression. Otherwise it's lossy. A DivX or XviD becomes much larger, for example. So not lossless.

Update: To be Lossless every frame would have to be packed into a file or as pictures without any compression.
I made lossless avis (50-60GB each) with Huffyuv codec in 4:2:2 YUY2 format. I just would like to know a bit about what is happening behind the very fast (it takes half an hour for a 70 minutes video) converting to x264 during import. The color space is converted to 4:2:0 YV12 I assume. The resulting structure is ~8GB so some kind of lossy encode is performed. The reencode is unnecessary at this stage because reencoding the imported source will result in a bigger filesize at a CRF value of 16. Those lossless avis are very important to me so my aim is obtaining visually lossless archives with BD-RB.
mparade is offline   Reply With Quote