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-rw-r--r--libavfilter/vf_gradfun.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavfilter/vf_gradfun.c b/libavfilter/vf_gradfun.c
index ca7ef69144..80b7e412e3 100644
--- a/libavfilter/vf_gradfun.c
+++ b/libavfilter/vf_gradfun.c
@@ -56,7 +56,7 @@ DECLARE_ALIGNED(16, static const uint16_t, dither)[8][8] = {
void ff_gradfun_filter_line_c(uint8_t *dst, uint8_t *src, uint16_t *dc, int width, int thresh, const uint16_t *dithers)
{
int x;
- for (x = 0; x < width; x++, dc += x & 1) {
+ for (x = 0; x < width; dc += x & 1, x++) {
int pix = src[x] << 7;
int delta = dc[0] - pix;
int m = abs(delta) * thresh >> 16;