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Wed, 21 Jan 2026 01:31:50 +0200 (EET) MIME-Version: 1.0 To: ffmpeg-devel@ffmpeg.org Date: Tue, 20 Jan 2026 23:31:50 -0000 Message-ID: <176895191091.25.15223482408324829865@4457048688e7> Message-ID-Hash: QOFPPMOB37R3KQCQWNACGU477L5HCA2S X-Message-ID-Hash: QOFPPMOB37R3KQCQWNACGU477L5HCA2S X-MailFrom: code@ffmpeg.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; header-match-ffmpeg-devel.ffmpeg.org-0; header-match-ffmpeg-devel.ffmpeg.org-1; header-match-ffmpeg-devel.ffmpeg.org-2; header-match-ffmpeg-devel.ffmpeg.org-3; emergency; member-moderation X-Mailman-Version: 3.3.10 Precedence: list Reply-To: FFmpeg development discussions and patches Subject: [FFmpeg-devel] [PR] avcodec/motion_est: Fix left shifts of negative numbers (PR #21533) List-Id: FFmpeg development discussions and patches Archived-At: Archived-At: List-Archive: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: mkver via ffmpeg-devel Cc: mkver Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Archived-At: List-Archive: List-Post: 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 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 --- 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<xmin<c.first_slice_line) { c->pred_x= P_LEFT[0]; -- 2.52.0 _______________________________________________ ffmpeg-devel mailing list -- ffmpeg-devel@ffmpeg.org To unsubscribe send an email to ffmpeg-devel-leave@ffmpeg.org