From 13450b67229540fd79075a84185b29db1eec2687 Mon Sep 17 00:00:00 2001 From: James Almer Date: Fri, 14 Apr 2023 16:34:21 -0300 Subject: [PATCH] avcodec/mpegvideo_enc: ensure lmin is smaller than lmax Fixes ticket #10234 Signed-off-by: James Almer --- libavcodec/ituh263enc.c | 5 +++++ libavcodec/mpegvideo_enc.c | 5 +++++ 2 files changed, 10 insertions(+) diff --git a/libavcodec/ituh263enc.c b/libavcodec/ituh263enc.c index c30ecad438..97abfb3f45 100644 --- a/libavcodec/ituh263enc.c +++ b/libavcodec/ituh263enc.c @@ -865,6 +865,11 @@ av_cold void ff_h263_encode_init(MpegEncContext *s) s->c_dc_scale_table= ff_mpeg1_dc_scale_table; } + if (s->lmin > s->lmax) { + av_log(s->avctx, AV_LOG_WARNING, "Clipping lmin value to %d\n", s->lmax); + s->lmin = s->lmax; + } + ff_thread_once(&init_static_once, h263_encode_init_static); } diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c index bcd2f9ef1d..efd8e63aa8 100644 --- a/libavcodec/mpegvideo_enc.c +++ b/libavcodec/mpegvideo_enc.c @@ -798,6 +798,11 @@ av_cold int ff_mpv_encode_init(AVCodecContext *avctx) AV_CODEC_FLAG_INTERLACED_ME) || s->alternate_scan); + if (s->lmin > s->lmax) { + av_log(avctx, AV_LOG_WARNING, "Clipping lmin value to %d\n", s->lmax); + s->lmin = s->lmax; + } + /* init */ ff_mpv_idct_init(s); if ((ret = ff_mpv_common_init(s)) < 0)