I remember having similar encoding rates with similar kind of footage with my former machine based on a 2009 low-end E5200 CPU (without frame interpolation but with at least as resource-intensive denoising filters). And the encoding rate is surprisingly low : 0.127x which is about 3.80 frames per second if I'm not mistaken (I started it at 02:51 and now at 11:22 it's about 75% completed).
AVISYNTH FFMPEG MOVIE
QTInput("HD_BARS.mov", quality=100, audio=2)ĬolorMatrix(mode="Rec.709->Rec.I'm currently encoding a 1h23min video in 1280x720 resolution and 29.97 FPS framerate, using ffmpeg 32 bits + libx264 -crf 20 -preset "slower", through an Avisynth script which involves mainly interpolation commands to repair blurry frames (quite a lot – about 8000 out of 150000, using a combination of FrameSurgeon, Morpheus and Morph), from a losslessly rendered movie in Lagarith codec (about 120GB), with a computer based on an Intel i7 6700K CPU with 16GB of RAM. This is the Avisynth script I currently use, for reference, to get good results: > _īut I am currently using Avisynth to do the down-conversion and the result is really good, and Avisynth is only 8 bit, so it shouldn't matter that the colormatrix filter only works in 8 bit? > Thanks for all your help Carl, appreciated. > I guess it's time to throw the towel in and give up, back to avisynth :( > Using that in my command line gave me the closest conversion I could achieve, now I know why it wasn't perfect, no colormatrix 10 bit support! > (My question was why you are inserting yuvy422 colourspace.) > Or is there any other way to convert from bt709 to bt601 in 10 bit? Any chance this will get 'upgraded' to support 10 bit, or perhaps a patch? > Thats a bit of a show stopper! A real shame the colormatrix filter has this limitation. > we are back where we originally started. > Unfortunately, the colormatrix filter only works with eight bit, so > To: ffmpeg-user at > From: cehoyos at ag.or.at> Date: Tue, 16:37:24 +0000
> Subject: Re: HD> SD Down-Convert Prores Color
> From: kevwells at .uk> To: ffmpeg-user at > Date: Tue, 18:44:48 +0000