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Further CQ, Key frame and ARF changes

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This code fixes a bug in the calculation of
the minimum Q for alt ref frames.

It also allows an extended gf/arf interval for sections
of clips that completely static (or nearly so).

Change-Id: I1a21aaa16d4f0578e5f99b13bebd78d59403c73b
This commit is contained in:
Paul Wilkins
2011-01-18 15:19:05 +00:00
parent 339c512762
commit 57136a268a
4 changed files with 36 additions and 21 deletions
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18
vp8/encoder/firstpass.c
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@@ -1375,7 +1375,7 @@ static void define_gf_group(VP8_COMP *cpi, FIRSTPASS_STATS *this_frame)
// what level of boost is appropriate for the GF or ARF that will be coded with the group
i = 0;
while (((i < cpi->max_gf_interval) || ((cpi->frames_to_key - i) < MIN_GF_INTERVAL)) && (i < cpi->frames_to_key))
while (((i < cpi->static_scene_max_gf_interval) || ((cpi->frames_to_key - i) < MIN_GF_INTERVAL)) && (i < cpi->frames_to_key))
{
double r;
double this_frame_mvr_ratio;
@@ -1485,18 +1485,20 @@ static void define_gf_group(VP8_COMP *cpi, FIRSTPASS_STATS *this_frame)
boost_score += (decay_accumulator * r);
// Break out conditions.
if ( /* i>4 || */
if ( /* i>4 || */
// Break at cpi->max_gf_interval unless almost totally static
(i >= cpi->max_gf_interval && (loop_decay_rate < 0.99)) ||
(
(i > MIN_GF_INTERVAL) && // Dont break out with a very short interval
((cpi->frames_to_key - i) >= MIN_GF_INTERVAL) && // Dont break out very close to a key frame
// Dont break out with a very short interval
(i > MIN_GF_INTERVAL) &&
// Dont break out very close to a key frame
((cpi->frames_to_key - i) >= MIN_GF_INTERVAL) &&
((boost_score > 20.0) || (next_frame.pcnt_inter < 0.75)) &&
((mv_ratio_accumulator > 100.0) ||
(abs_mv_in_out_accumulator > 3.0) ||
(mv_in_out_accumulator < -2.0) ||
((boost_score - old_boost_score) < 2.0)
)
)
)
((boost_score - old_boost_score) < 2.0))
) )
{
boost_score = old_boost_score;
break;