https://bugs.kde.org/show_bug.cgi?id=370480
--- Comment #3 from Jean-Baptiste Mardelle <j...@kdenlive.org> --- This requires some more testing. Currently, using vaapi, to encode i get ~160fps: ffmpegmlt -vaapi_device /dev/dri/renderD128 -i input.mp4 -vf 'format=nv12|vaapi,hwupload,scale_vaapi=640:220' -c:v h264_vaapi output.mp4 Using software encoding, I get ~180-230 fps with this command: ffmpegmlt -i input.mp4 -vf scale=640:-1 -g 5 -crf 25 -ab 128k -vcodec libx264 -acodec libvorbis -preset:v veryfast output.mov This is most likely due to the fact that we can use h264 profiles (veryfast) in software encoding, but I could not find a way to change the provile using the va_api encoder, so it produces HQ but slow h264. So in my tests, there is no benefit to use hardware encoders for Kdenlive's proxy feature (quickly producing low quality files). -- You are receiving this mail because: You are watching all bug changes.
