ref: 4bc7f4828fc0cb95027ab1fde476b4d05a2b1f80
parent: fc99636f1bc09603434a16181c2eb9307a844ec6
author: Yaowu Xu <[email protected]>
date: Fri Feb 13 09:53:11 EST 2015
Fix an encoder/decode mismatch bug This commit prevent the encoder to update last_frame_type when a frame is dropped in the encoder. Prior to this fix, if there is a dropped frame immediatedly after a key frame, decoder would have the value of last_frame_type as key frame, different from encoder as the dropped frame in encoder would have updated the value to an inter frame. This leads to different probability update in encoder and decoder, thereby encoder/decoder mismatch. This fixes issue #941 Change-Id: I27115224b138bec43ae3916c016574f5740822b0
--- a/vp9/encoder/vp9_ratectrl.c
+++ b/vp9/encoder/vp9_ratectrl.c
@@ -1320,7 +1320,6 @@
void vp9_rc_postencode_update_drop_frame(VP9_COMP *cpi) {// Update buffer level with zero size, update frame counters, and return.
update_buffer_level(cpi, 0);
- cpi->common.last_frame_type = cpi->common.frame_type;
cpi->rc.frames_since_key++;
cpi->rc.frames_to_key--;
cpi->rc.rc_2_frame = 0;