[x264-devel] Does X.264 support scaling lists?

Jason Garrett-Glaser jason at x264.com
Wed Aug 10 00:28:31 CEST 2011


On Tue, Aug 9, 2011 at 3:05 PM, Dan Rosen <drosen at drdsystems.com> wrote:
> Was looking at x264.h and wondered if there's a way to specify a scaling
> list / matrix in the SPS?
>
> Thanks, Dan Rosen
> VideoReDo

Three different ways.  grep for cqm:

    int         i_cqm_preset;
    char        *psz_cqm_file;      /* JM format */
    uint8_t     cqm_4iy[16];        /* used only if i_cqm_preset ==
X264_CQM_CUSTOM */
    uint8_t     cqm_4py[16];
    uint8_t     cqm_4ic[16];
    uint8_t     cqm_4pc[16];
    uint8_t     cqm_8iy[64];
    uint8_t     cqm_8py[64];
    uint8_t     cqm_8ic[64];
    uint8_t     cqm_8pc[64];

Jason


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