From: Paul B Mahol <onemda@gmail.com>
Date: Sun, 14 Feb 2021 17:20:03 +0100
Subject: avcodec/pngenc: remove monowhite from apng formats

Monowhite pixel format is not supported, and it does not make sense
to add support for it.

Fixes #7989

Upstream-status: Pending

---
 libavcodec/pngenc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/pngenc.c b/libavcodec/pngenc.c
index efcae8c..eebb164 100644
--- a/libavcodec/pngenc.c
+++ b/libavcodec/pngenc.c
@@ -1174,7 +1174,7 @@ AVCodec ff_apng_encoder = {
         AV_PIX_FMT_PAL8,
         AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A,
         AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_YA16BE,
-        AV_PIX_FMT_MONOBLACK, AV_PIX_FMT_NONE
+        AV_PIX_FMT_NONE
     },
     .priv_class     = &apngenc_class,
 };