2019-02-07 21:21 GMT+01:00, James Almer <jamr...@gmail.com>: > On 2/7/2019 5:08 PM, Carl Eugen Hoyos wrote: >> 2019-02-07 20:57 GMT+01:00, James Almer <jamr...@gmail.com>: >>> On 2/7/2019 4:53 PM, Carl Eugen Hoyos wrote: >>>> Hi! >>>> >>>> Lossless libvpx encoding is possible with "-crf 0". >>> >>> Does that work with all supported versions, or was it a recent change? >> >> No, it needs a newer version than 1.4.0 >> >> Sorry, Carl Eugen > > What's the first version where this works?
It works with 1.6.0 but not with 1.5.0. > We could bump the minimum required version. It would > also let us remove a considerable amount of ifdeffery. > > Debian Oldstable has a libvpx 1.6.1 package in the official backports > repository, and Ubuntu Xenial (oldest LTS) ships with 1.5.0. And if it > was added after those, an argument could also be made that if you're > compiling latest ffmpeg you can also compile its popular dependencies. > Not to mention libvpx is a library that's best to have as up to date as > possible. No strong opinion here, I hadn't realized that -crf 0 only works with newer versions. Can you explain why crf alone has no effect and needs -b:v 0? Isn't this a bug both with libvpx and libaom? Carl Eugen _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel