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-rw-r--r--libavcodec/mjpegenc_common.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/mjpegenc_common.c b/libavcodec/mjpegenc_common.c
index 31868c9bed..3038ebde6e 100644
--- a/libavcodec/mjpegenc_common.c
+++ b/libavcodec/mjpegenc_common.c
@@ -573,7 +573,7 @@ int ff_mjpeg_encode_stuffing(MpegEncContext *s)
ff_mjpeg_escape_FF(pbc, s->esc_pos);
- if((s->avctx->active_thread_type & FF_THREAD_SLICE) && mb_y < s->mb_height)
+ if((s->avctx->active_thread_type & FF_THREAD_SLICE) && mb_y < s->mb_height - 1)
put_marker(pbc, RST0 + (mb_y&7));
s->esc_pos = put_bits_count(pbc) >> 3;
fail: