PR #21533 opened by mkver URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21533 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21533.patch
Fixes ticket #21486. >From 137f500077a76dea6bf5e768d20a0929a097386f Mon Sep 17 00:00:00 2001 From: Andreas Rheinhardt <[email protected]> Date: Wed, 21 Jan 2026 00:28:35 +0100 Subject: [PATCH] avcodec/motion_est: Fix left shifts of negative numbers Fixes ticket #21486. Signed-off-by: Andreas Rheinhardt <[email protected]> --- libavcodec/motion_est.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/libavcodec/motion_est.c b/libavcodec/motion_est.c index 33166f2a90..8ca6f16a7c 100644 --- a/libavcodec/motion_est.c +++ b/libavcodec/motion_est.c @@ -1082,11 +1082,9 @@ int ff_pre_estimate_p_frame_motion(MPVEncContext *const s, get_limits(s, 16*mb_x, 16*mb_y, 0); c->skip=0; - P_LEFT[0] = s->p_mv_table[xy + 1][0]; + P_LEFT[0] = FFMAX(s->p_mv_table[xy + 1][0], c->xmin * (1 << shift)); P_LEFT[1] = s->p_mv_table[xy + 1][1]; - if(P_LEFT[0] < (c->xmin<<shift)) P_LEFT[0] = (c->xmin<<shift); - /* special case for first line */ if (s->c.first_slice_line) { c->pred_x= P_LEFT[0]; -- 2.52.0 _______________________________________________ ffmpeg-devel mailing list -- [email protected] To unsubscribe send an email to [email protected]
