Same file size for different CRF values

1. offizieller Beitrag

    Hello,

    I'm using Voukoder 12.2 and Davinci 18.1.3.

    Irrespective of the CRF value in Voukoder the resulting file size stays the same.

    Code
    crf=40.000 noise_reduction=8 opencl=1 preset=medium rc=crf x264-params=qpmax=24:chroma-qp-offset=-2:aq-mode=3:aq-strength=0.800:rc-lookahead=110:keyint=480:min-keyint=3:bframes=11:b-adapt=2:ref=3:deblock=0:direct=auto:no-weightb=0:me=umh:merange=32:subme=10:psy-rd=0.77:no-chroma-me=1:trellis=2:no-fast-pskip=1

    Here I'm using an exaggerated CRF value of 40.

    Is this a bug or am I doing something wrong?

  • Vouk 8. Februar 2023 um 17:14

    Hat das Thema freigeschaltet.

    I can't see a visual difference between CRF=1 and CRF=51 but the file size difference is huge in this case (6.17 GB vs 328.2 GB).

    Apparently, there are file size differences after all.

    crf01.mp4 --> 6.17 GB

    crf14.mp4 --> 528.8 MB

    crf23.mp4 --> 328.2 MB

    crf40.mp4 --> 328.2 MB

    crf51.mp4 --> 328.2 MB

    This option should not be present on this version of Voukoder though. I have removed it from all presets a long time ago, and this change has been merged. Try reinstall Voukoder at this point.

  • Vouk 13. April 2023 um 18:27

    Hat das Label Behoben hinzugefügt.