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avcodec/nvenc: use encoder level options for qmin/qmax

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AV1 uses a vastly different range than what the global options permit,
and also for the other codecs the range of the global options is at
least misaligned.

Fixes #11365
This commit is contained in:
Timo Rothenpieler
2025-01-09 00:14:04 +01:00
parent a583f7e2fd
commit 89b37b4dcb
5 changed files with 44 additions and 19 deletions
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49
libavcodec/nvenc.c
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@ -884,8 +884,8 @@ static av_cold void set_constqp(AVCodecContext *avctx)
rc->constQP.qpIntra = av_clip(ctx->cqp * fabs(avctx->i_quant_factor) + avctx->i_quant_offset + 0.5, 0, qmax);
}
avctx->qmin = -1;
avctx->qmax = -1;
avctx->qmin = ctx->qmin = -1;
avctx->qmax = ctx->qmax = -1;
}
static av_cold void set_vbr(AVCodecContext *avctx)
@ -899,27 +899,37 @@ static av_cold void set_vbr(AVCodecContext *avctx)
int qmax = 51;
#endif
if (avctx->qmin >= 0 && avctx->qmax >= 0) {
if (avctx->qmin >= 0 || avctx->qmax >= 0)
av_log(avctx, AV_LOG_WARNING, "Passing qmin/qmax via global AVCodecContext options. Use encoder options instead.\n");
if (avctx->qmin >= 0 && ctx->qmin < 0)
ctx->qmin = avctx->qmin;
if (avctx->qmax >= 0 && ctx->qmax < 0)
ctx->qmax = avctx->qmax;
avctx->qmin = ctx->qmin;
avctx->qmax = ctx->qmax;
if (ctx->qmin >= 0 && ctx->qmax >= 0) {
rc->enableMinQP = 1;
rc->enableMaxQP = 1;
rc->minQP.qpInterB = avctx->qmin;
rc->minQP.qpInterP = avctx->qmin;
rc->minQP.qpIntra = avctx->qmin;
rc->minQP.qpInterB = ctx->qmin;
rc->minQP.qpInterP = ctx->qmin;
rc->minQP.qpIntra = ctx->qmin;
rc->maxQP.qpInterB = avctx->qmax;
rc->maxQP.qpInterP = avctx->qmax;
rc->maxQP.qpIntra = avctx->qmax;
rc->maxQP.qpInterB = ctx->qmax;
rc->maxQP.qpInterP = ctx->qmax;
rc->maxQP.qpIntra = ctx->qmax;
qp_inter_p = (avctx->qmax + 3 * avctx->qmin) / 4; // biased towards Qmin
} else if (avctx->qmin >= 0) {
qp_inter_p = (ctx->qmax + 3 * ctx->qmin) / 4; // biased towards Qmin
} else if (ctx->qmin >= 0) {
rc->enableMinQP = 1;
rc->minQP.qpInterB = avctx->qmin;
rc->minQP.qpInterP = avctx->qmin;
rc->minQP.qpIntra = avctx->qmin;
rc->minQP.qpInterB = ctx->qmin;
rc->minQP.qpInterP = ctx->qmin;
rc->minQP.qpIntra = ctx->qmin;
qp_inter_p = avctx->qmin;
qp_inter_p = ctx->qmin;
} else {
qp_inter_p = 26; // default to 26
}
@ -965,8 +975,8 @@ static av_cold void set_lossless(AVCodecContext *avctx)
rc->constQP.qpInterP = 0;
rc->constQP.qpIntra = 0;
avctx->qmin = -1;
avctx->qmax = -1;
avctx->qmin = ctx->qmin = -1;
avctx->qmax = ctx->qmax = -1;
}
static void nvenc_override_rate_control(AVCodecContext *avctx)
@ -980,7 +990,7 @@ static void nvenc_override_rate_control(AVCodecContext *avctx)
return;
#ifndef NVENC_NO_DEPRECATED_RC
case NV_ENC_PARAMS_RC_VBR_MINQP:
if (avctx->qmin < 0) {
if (avctx->qmin < 0 && ctx->qmin < 0) {
av_log(avctx, AV_LOG_WARNING,
"The variable bitrate rate-control requires "
"the 'qmin' option set.\n");
@ -1103,7 +1113,8 @@ static av_cold int nvenc_setup_rate_control(AVCodecContext *avctx)
ctx->rc = NV_ENC_PARAMS_RC_CONSTQP;
} else if (ctx->twopass) {
ctx->rc = NV_ENC_PARAMS_RC_VBR_HQ;
} else if (avctx->qmin >= 0 && avctx->qmax >= 0) {
} else if ((avctx->qmin >= 0 && avctx->qmax >= 0) ||
(ctx->qmin >= 0 && ctx->qmax >= 0)) {
ctx->rc = NV_ENC_PARAMS_RC_VBR_MINQP;
}
}

2
libavcodec/nvenc.h
View File

@ -271,6 +271,8 @@ typedef struct NvencContext
float quality;
int aud;
int bluray_compat;
int qmin;
int qmax;
int init_qp_p;
int init_qp_b;
int init_qp_i;

4
libavcodec/nvenc_av1.c
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@ -119,6 +119,10 @@ static const AVOption options[] = {
OFFSET(qp_cb_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, -12, 12, VE },
{ "qp_cr_offset", "Quantization parameter offset for cr channel",
OFFSET(qp_cr_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, -12, 12, VE },
{ "qmin", "Specifies the minimum QP used for rate control",
OFFSET(qmin), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 255, VE },
{ "qmax", "Specifies the maximum QP used for rate control",
OFFSET(qmax), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 255, VE },
{ "no-scenecut", "When lookahead is enabled, set this to 1 to disable adaptive I-frame insertion at scene cuts",
OFFSET(no_scenecut), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
{ "forced-idr", "If forcing keyframes, force them as IDR frames.",

4
libavcodec/nvenc_h264.c
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@ -174,6 +174,10 @@ static const AVOption options[] = {
OFFSET(qp_cb_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, -12, 12, VE },
{ "qp_cr_offset", "Quantization parameter offset for cr channel",
OFFSET(qp_cr_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, -12, 12, VE },
{ "qmin", "Specifies the minimum QP used for rate control",
OFFSET(qmin), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE },
{ "qmax", "Specifies the maximum QP used for rate control",
OFFSET(qmax), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE },
{ "weighted_pred","Set 1 to enable weighted prediction",
OFFSET(weighted_pred),AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "coder", "Coder type", OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = -1 },-1, 2, VE, .unit = "coder" },

4
libavcodec/nvenc_hevc.c
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@ -158,6 +158,10 @@ static const AVOption options[] = {
OFFSET(qp_cb_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, -12, 12, VE },
{ "qp_cr_offset", "Quantization parameter offset for cr channel",
OFFSET(qp_cr_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, -12, 12, VE },
{ "qmin", "Specifies the minimum QP used for rate control",
OFFSET(qmin), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE },
{ "qmax", "Specifies the maximum QP used for rate control",
OFFSET(qmax), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE },
{ "weighted_pred","Set 1 to enable weighted prediction",
OFFSET(weighted_pred),AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
#ifdef NVENC_HAVE_HEVC_BFRAME_REF_MODE