inlink->format is supposed to be set to a valid format controlled by query_formats().
LUT3DContext *lut3d = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
LUT3DContext *lut3d = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
lut3d->clut_is16bit = 0;
switch (inlink->format) {
case AV_PIX_FMT_RGB48:
lut3d->clut_is16bit = 0;
switch (inlink->format) {
case AV_PIX_FMT_RGB48: