On Fri, Dec 4, 2015 at 4:06 AM, D <[email protected]> wrote: > On 03.12.2015 22:22, Lou wrote: > >> On Thu, 3 Dec 2015 16:43:28 +0100 >> D <[email protected]> wrote: >> > The other thing I find weird with -preset is that one can use -crf setting > with it. I thought a preset would cover this and no -crf setting would be > needed/allowed. But because it is, the question is what other settings are > allowed/needed? Confusing. > > I would suggest you read a bit on x264 to reduce the confusion. Here is a good place to start: https://trac.ffmpeg.org/wiki/x264EncodingGuide
When using presets, there are essentially three things you can vary: encoding speed, quality, and bitrate. You specify relative encoding speed with the choice of preset, then specify either quality or bitrate. You can't specify all three in one encode. At a given quality level (crf), you will get lower bitrate with a slower preset. At a given bitrate level, you will get better quality with a slower preset. _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
