Francesco Romani wrote: > > On Wed, 2008-01-23 at 08:14 +0000, Andrew Church wrote: > > >I am using transcode 1.1.0alpha6, and I am trying to encode a video using > > >the x264 module. I want to encode them using 1 pass VBR, with the quality > > >set using x264's crf parameter. (It's faster than 2-pass, and the quality > > >stays pretty much the same between movies) However, I can not for the life > > >of me figure out how to do it using transcode. I set the crf parameter in > > >my x624.cfg, and it shows up when I launch transcode with -q 2, but it > > >seems > > >to have no effect. > > > > The crf parameter is currently accepted but ignored. I've just committed > > a patch to CVS HEAD that activates constant-quality mode if the crf > > parameter is given (and nonzero). > > Will be part of alpha7 as well.
That's great! Though, I have certain issues with "constant quality", since quantifying quality is a tricky business. Myself, I feel better about specifying "do your darndest with an abr of 2200 kbits", since I can guess what size the output will be, and have a pretty good idea of the quality as well. With cfr, you can have a pretty good idea of the quality, but no idea of the size. My fear is that people will be attracted to cfr for the same reason that people think they want to create dvd's with a target bitrate of 7000 kbits.
