On Thu, Feb 25, 2010 at 10:20 AM, Rolf Ernst <rolf.ernst at silverlightning.org > wrote: > On Thu, Feb 25, 2010 at 10:01 AM, Krzysztof Duchnowski <amidk75 at gmail.com>wrote: > >> andrew at WARnux.com pisze: >> >>> I've been using x264 to encode videos now for months. Encoding a full >>> length movie used to take about 11 hrs and the quality was splendid. I >>> built the latest mplayer/mencoder and x264 a few days ago and now my >>> encodes only take about 4 hours but the quality is degraded. What really >>> confuses me is that I didn't change my command line parameters at all. >>> >>> How is this possible? >>> >> >> Did you used CRF mode? >> If yes then for month now (or two) CRF mode not reflect QP anymore but >> instead it is a "Quality factor" and thus considerable good quality you >> could achieve is with CRF in 18-21 range. >> >> -- >> Krzysztof 'DK75' Duchnowski >> GetFirefox - http://www.mozilla.com/firefox/ >> Konfiguracja UTF-8 dla czytnik?w - http://evil.pl/pip/utf/ >> _______________________________________________ >> MPlayer-users mailing list >> MPlayer-users at mplayerhq.hu >> https://lists.mplayerhq.hu/mailman/listinfo/mplayer-users > > > 18-21 gives you rather large files. I use 23 (last month's build) and get > incredibly good quality. For 720x480 resolution it often comes across > somewhere in the 1800kbps range. But it depends. > > /re > I should add that I use pyramid, adaptive frame, 6 ref rames, 5 b frames,CABAC (of course) and what not, pretty much maxing out whatever I can do to lower the bit rate.
