From bd31a7750f5c7bd9d2aff426566cfc9f40fa07b6 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sun, 17 Mar 2002 19:45:33 +0000
Subject: [PATCH] scene change detection
Originally committed as revision 337 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavcodec/mpegvideo.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index 9b236719529..054f12a5773 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -487,7 +487,6 @@ int MPV_encode_picture(AVCodecContext *avctx,
} else {
s->pict_type = I_TYPE;
}
- avctx->key_frame = (s->pict_type == I_TYPE);
MPV_frame_start(s);
@@ -518,6 +517,7 @@ int MPV_encode_picture(AVCodecContext *avctx,
}
encode_picture(s, s->picture_number);
+ avctx->key_frame = (s->pict_type == I_TYPE);
MPV_frame_end(s);
s->picture_number++;
@@ -1078,6 +1078,18 @@ static void encode_picture(MpegEncContext *s, int picture_number)
}
}
+ if(s->avg_mb_var < s->mc_mb_var && s->pict_type != B_TYPE){ //FIXME subtract MV bits
+ int i;
+ s->pict_type= I_TYPE;
+ for(i=0; i<s->mb_height*s->mb_width; i++){
+ s->mb_type[i] = I_TYPE;
+ s->mv_table[0][i] = 0;
+ s->mv_table[1][i] = 0;
+ }
+ }
+
+// printf("%d %d\n", s->avg_mb_var, s->mc_mb_var);
+
if (!s->fixed_qscale)
s->qscale = rate_estimate_qscale(s);
--
GitLab