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libvpxenc,vp9: add corpus-complexity option

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Corpus VBR mode is a variant of standard VBR where the complexity
distribution midpoint is passed in rather than calculated for a specific
clip or chunk.

The valid range is [0, 10000]. 0 (default) uses standard VBR.

Signed-off-by: James Zern <jzern@google.com>
This commit is contained in:
James Zern 2017-11-20 17:32:23 -08:00
parent ed4a0c7923
commit 86cead5256
2 changed files with 21 additions and 0 deletions
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5
doc/encoders.texi
View File

@ -1683,6 +1683,11 @@ colorspaces:
Enable row based multi-threading.
@item tune-content
Set content type: default (0), screen (1), film (2).
@item corpus-complexity
Corpus VBR mode is a variant of standard VBR where the complexity distribution
midpoint is passed in rather than calculated for a specific clip or chunk.
The valid range is [0, 10000]. 0 (default) uses standard VBR.
@end table
@end table

16
libavcodec/libvpxenc.c
View File

@ -110,6 +110,7 @@ typedef struct VPxEncoderContext {
float level;
int row_mt;
int tune_content;
int corpus_complexity;
} VPxContext;
/** String mappings for enum vp8e_enc_control_id */
@ -213,6 +214,10 @@ static av_cold void dump_enc_cfg(AVCodecContext *avctx,
width, "rc_2pass_vbr_bias_pct:", cfg->rc_2pass_vbr_bias_pct,
width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct,
width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct);
#if VPX_ENCODER_ABI_VERSION >= 14
av_log(avctx, level, " %*s%u\n",
width, "rc_2pass_vbr_corpus_complexity:", cfg->rc_2pass_vbr_corpus_complexity);
#endif
av_log(avctx, level, "keyframing settings\n"
" %*s%d\n %*s%u\n %*s%u\n",
width, "kf_mode:", cfg->kf_mode,
@ -565,6 +570,14 @@ FF_ENABLE_DEPRECATION_WARNINGS
if (avctx->rc_max_rate)
enccfg.rc_2pass_vbr_maxsection_pct =
avctx->rc_max_rate * 100LL / avctx->bit_rate;
#if CONFIG_LIBVPX_VP9_ENCODER
if (avctx->codec_id == AV_CODEC_ID_VP9) {
#if VPX_ENCODER_ABI_VERSION >= 14
if (ctx->corpus_complexity >= 0)
enccfg.rc_2pass_vbr_corpus_complexity = ctx->corpus_complexity;
#endif
}
#endif
if (avctx->rc_buffer_size)
enccfg.rc_buf_sz =
@ -1140,6 +1153,9 @@ static const AVOption vp9_options[] = {
#if VPX_ENCODER_ABI_VERSION >= 14
{ "film", "Film content; improves grain retention", 0, AV_OPT_TYPE_CONST, {.i64 = 2}, 0, 0, VE, "tune_content" },
#endif
#endif
#if VPX_ENCODER_ABI_VERSION >= 14
{ "corpus-complexity", "corpus vbr complexity midpoint", OFFSET(corpus_complexity), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 10000, VE },
#endif
LEGACY_OPTIONS
{ NULL }