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libvpxenc: add overshoot-pct option 

balances the presence of undershoot-pct

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Zern <jzern@google.com>
This commit is contained in:
James Zern 2015-06-06 10:24:44 -07:00
parent 2c70436e69
commit fd004e10d3
1 changed files with 4 additions and 0 deletions
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4
libavcodec/libvpxenc.c
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@ -92,6 +92,7 @@ typedef struct VP8EncoderContext {
int static_thresh;
int max_intra_rate;
int rc_undershoot_pct;
int rc_overshoot_pct;
// VP9-only
int lossless;
@ -484,6 +485,8 @@ static av_cold int vpx_init(AVCodecContext *avctx,
#endif
if (ctx->rc_undershoot_pct >= 0)
enccfg.rc_undershoot_pct = ctx->rc_undershoot_pct;
if (ctx->rc_overshoot_pct >= 0)
enccfg.rc_overshoot_pct = ctx->rc_overshoot_pct;
//_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO
if (avctx->keyint_min >= 0 && avctx->keyint_min == avctx->gop_size)
@ -932,6 +935,7 @@ static int vp8_encode(AVCodecContext *avctx, AVPacket *pkt,
{ "crf", "Select the quality for constant quality mode", offsetof(VP8Context, crf), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 63, VE }, \
{ "static-thresh", "A change threshold on blocks below which they will be skipped by the encoder", OFFSET(static_thresh), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE }, \
{ "undershoot-pct", "Datarate undershoot (min) target (%)", OFFSET(rc_undershoot_pct), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 100, VE }, \
{ "overshoot-pct", "Datarate overshoot (max) target (%)", OFFSET(rc_overshoot_pct), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1000, VE }, \
#define LEGACY_OPTIONS \
{"speed", "", offsetof(VP8Context, cpu_used), AV_OPT_TYPE_INT, {.i64 = 1}, -16, 16, VE}, \