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https://git.videolan.org/?p=ffmpeg.git;a=commit;h=8fe2fec45321d1b82f98f9725ad9118cefcfa58d
https://git.videolan.org/?p=ffmpeg.git;a=commit;h=e5b5dd66535f444451e0fee59247b224d866f334
From 8fe2fec45321d1b82f98f9725ad9118cefcfa58d Mon Sep 17 00:00:00 2001
From: Christopher Degawa <ccom@randomderp.com>
Date: Sun, 20 Nov 2022 13:07:36 -0600
Subject: [PATCH] avcodec/libsvtav1: only set max_buf_sz if both bitrate and
rc_buf_sz is set
maximum_buffer_size_ms should only be set if both are specified or if
the user sets it through -svtav1-params buf-sz=val
Signed-off-by: Christopher Degawa <ccom@randomderp.com>
--- a/libavcodec/libsvtav1.c
+++ b/libavcodec/libsvtav1.c
@@ -179,7 +179,8 @@ static int config_enc_params(EbSvtAv1EncConfiguration *param,
param->min_qp_allowed = avctx->qmin;
}
param->max_bit_rate = avctx->rc_max_rate;
- param->maximum_buffer_size_ms = avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
+ if (avctx->bit_rate && avctx->rc_buffer_size)
+ param->maximum_buffer_size_ms = avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
if (svt_enc->crf > 0) {
param->qp = svt_enc->crf;
--
2.30.2
From e5b5dd66535f444451e0fee59247b224d866f334 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jan=20Ekstr=C3=B6m?= <jeebjp@gmail.com>
Date: Thu, 9 Mar 2023 20:27:06 +0200
Subject: [PATCH] avcodec/libsvtav1: use larger of bit rate and max rate for
buffer size
Generally if maxrate is set, the calculation should be maxrate over
bufsize. This additionally enables CRF + maxrate & bufsize usage.
In order to keep negative values from enabling zero to be treated
as larger and causing a division by zero, check that one of the
variables is larger than zero.
--- a/libavcodec/libsvtav1.c
+++ b/libavcodec/libsvtav1.c
@@ -179,8 +179,10 @@ static int config_enc_params(EbSvtAv1EncConfiguration *param,
param->min_qp_allowed = avctx->qmin;
}
param->max_bit_rate = avctx->rc_max_rate;
- if (avctx->bit_rate && avctx->rc_buffer_size)
- param->maximum_buffer_size_ms = avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
+ if ((avctx->bit_rate > 0 || avctx->rc_max_rate > 0) && avctx->rc_buffer_size)
+ param->maximum_buffer_size_ms =
+ avctx->rc_buffer_size * 1000LL /
+ FFMAX(avctx->bit_rate, avctx->rc_max_rate);
if (svt_enc->crf > 0) {
param->qp = svt_enc->crf;
@@ -297,7 +299,8 @@ static int config_enc_params(EbSvtAv1EncConfiguration *param,
avctx->bit_rate = param->rate_control_mode > 0 ?
param->target_bit_rate : 0;
avctx->rc_max_rate = param->max_bit_rate;
- avctx->rc_buffer_size = param->maximum_buffer_size_ms * avctx->bit_rate / 1000LL;
+ avctx->rc_buffer_size = param->maximum_buffer_size_ms *
+ FFMAX(avctx->bit_rate, avctx->rc_max_rate) / 1000LL;
if (avctx->bit_rate || avctx->rc_max_rate || avctx->rc_buffer_size) {
AVCPBProperties *cpb_props = ff_add_cpb_side_data(avctx);
--
2.30.2
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