From: Mark Reid <mindm...@gmail.com>

---
 libavfilter/vf_lut3d.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/libavfilter/vf_lut3d.c b/libavfilter/vf_lut3d.c
index 6730a424ce..988f6c8b55 100644
--- a/libavfilter/vf_lut3d.c
+++ b/libavfilter/vf_lut3d.c
@@ -878,18 +878,16 @@ static int parse_cinespace(AVFilterContext *ctx, FILE *f)
 
                     prelut_sizes[i] = npoints;
                     in_min[i] = FLT_MAX;
-                    in_max[i] = FLT_MIN;
+                    in_max[i] = -FLT_MAX;
                     out_min[i] = FLT_MAX;
-                    out_max[i] = FLT_MIN;
-
-                    last = FLT_MIN;
+                    out_max[i] = -FLT_MAX;
 
                     for (int j = 0; j < npoints; j++) {
                         NEXT_FLOAT_OR_GOTO(v, end)
                         in_min[i] = FFMIN(in_min[i], v);
                         in_max[i] = FFMAX(in_max[i], v);
                         in_prelut[i][j] = v;
-                        if (v < last) {
+                        if (j > 0 && v < last) {
                             av_log(ctx, AV_LOG_ERROR, "Invalid file, non 
increasing prelut.\n");
                             ret = AVERROR(ENOMEM);
                             goto end;
-- 
2.27.0

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