Attached.
From 8295be1415649255b26cfdb0308d7be208711b4d Mon Sep 17 00:00:00 2001
From: Paul B Mahol <one...@gmail.com>
Date: Wed, 6 Sep 2023 02:27:56 +0200
Subject: [PATCH] avcodec/yuv4enc: do not read past end of input in case of odd
height
Signed-off-by: Paul B Mahol <one...@gmail.com>
---
libavcodec/yuv4enc.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/libavcodec/yuv4enc.c b/libavcodec/yuv4enc.c
index 8123260d5d..dd1874ff25 100644
--- a/libavcodec/yuv4enc.c
+++ b/libavcodec/yuv4enc.c
@@ -41,7 +41,7 @@ static int yuv4_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
u = pic->data[1];
v = pic->data[2];
- for (i = 0; i < avctx->height + 1 >> 1; i++) {
+ for (i = 0; i < avctx->height >> 1; i++) {
for (j = 0; j < avctx->width + 1 >> 1; j++) {
*dst++ = u[j] ^ 0x80;
*dst++ = v[j] ^ 0x80;
@@ -55,6 +55,17 @@ static int yuv4_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
v += pic->linesize[2];
}
+ if (avctx->height & 1) {
+ for (j = 0; j < avctx->width + 1 >> 1; j++) {
+ *dst++ = u[j] ^ 0x80;
+ *dst++ = v[j] ^ 0x80;
+ *dst++ = y[2 * j ];
+ *dst++ = y[2 * j + 1];
+ *dst++ = y[2 * j ];
+ *dst++ = y[2 * j + 1];
+ }
+ }
+
*got_packet = 1;
return 0;
}
--
2.39.1
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