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dont randomly dissallow direct MBs 

some PSNR/bitrate gain for b frames with adaptive quant or QPRD

Originally committed as revision 7341 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2006-12-21 13:23:49 +00:00
parent 2d1e5071e2
commit 51b1a6c939
3 changed files with 15 additions and 16 deletions
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1
libavcodec/h263.c
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@ -546,7 +546,6 @@ void ff_clean_mpeg4_qscales(MpegEncContext *s){
for(i=1; i<s->mb_num; i++){
int mb_xy= s->mb_index2xy[i];
if(qscale_table[mb_xy] != qscale_table[s->mb_index2xy[i-1]] && (s->mb_type[mb_xy]&CANDIDATE_MB_TYPE_DIRECT)){
s->mb_type[mb_xy]&= ~CANDIDATE_MB_TYPE_DIRECT;
s->mb_type[mb_xy]|= CANDIDATE_MB_TYPE_BIDIR;
}
}

14
tests/ffmpeg.regression.ref
View File

@ -75,13 +75,13 @@ stddev: 10.40 PSNR:27.78 bytes:7602176
600188 ./data/a-mpeg4-adv.avi
60edc5a67271e425d0a2a52981895b81 *./data/out.yuv
stddev: 10.25 PSNR:27.91 bytes:7602176
e8387041071301c4527377e1666136b0 *./data/a-mpeg4-qprd.avi
658496 ./data/a-mpeg4-qprd.avi
d2fa3fecdf033e70590e948a3c88976b *./data/out.yuv
stddev: 12.13 PSNR:26.44 bytes:7602176
cf202860731f8a85d07dae559417f330 *./data/a-mpeg4-adap.avi
400830 ./data/a-mpeg4-adap.avi
e9fb8b8e8bef48085d19c4969b012f36 *./data/out.yuv
8cbcdc72a33e5a8d624f38529efd93c8 *./data/a-mpeg4-qprd.avi
657582 ./data/a-mpeg4-qprd.avi
5b620f592a795b1caad323ab3fab0859 *./data/out.yuv
stddev: 12.12 PSNR:26.45 bytes:7602176
b41b9915af65da1c03f17f59a1806d0e *./data/a-mpeg4-adap.avi
400192 ./data/a-mpeg4-adap.avi
9dffb8079a1666c054514ab02d9d4871 *./data/out.yuv
stddev: 14.68 PSNR:24.78 bytes:7602176
5fff534f0b958547dfdb811d4f289931 *./data/a-mpeg4-thread.avi
761170 ./data/a-mpeg4-thread.avi

16
tests/rotozoom.regression.ref
View File

@ -75,14 +75,14 @@ stddev: 4.24 PSNR:35.56 bytes:7602176
173590 ./data/a-mpeg4-adv.avi
699edf05648fdc42196b7bebef9be269 *./data/out.yuv
stddev: 4.84 PSNR:34.41 bytes:7602176
a5dca818743c7871287160c5834a7536 *./data/a-mpeg4-qprd.avi
235794 ./data/a-mpeg4-qprd.avi
2cd225619e34fe8c12d10e7a28bb6cca *./data/out.yuv
stddev: 4.27 PSNR:35.50 bytes:7602176
c43ef40b07d77347beedd4ee16be0646 *./data/a-mpeg4-adap.avi
206290 ./data/a-mpeg4-adap.avi
ac55933a03c32f3941dfc8b71d738cd0 *./data/out.yuv
stddev: 4.10 PSNR:35.85 bytes:7602176
7006aa0ad8643348ec0d6d87bf03202c *./data/a-mpeg4-qprd.avi
235016 ./data/a-mpeg4-qprd.avi
224969c07440a23b376521c484936e75 *./data/out.yuv
stddev: 4.24 PSNR:35.56 bytes:7602176
62c7e87076d4741eb99d76e3ec424db0 *./data/a-mpeg4-adap.avi
205456 ./data/a-mpeg4-adap.avi
fe20d6bd1aa019196fb6426fdd0f4779 *./data/out.yuv
stddev: 4.08 PSNR:35.91 bytes:7602176
8cd8940d7451925784536fe9b2f2a5e3 *./data/a-mpeg4-thread.avi
254260 ./data/a-mpeg4-thread.avi
d160a4224ea1af66c85178912f8d3a7c *./data/out.yuv