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avcodec/ratecontrol: Try to keep fps as a rational

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-06-18 15:48:21 +02:00
parent f81602fb3a
commit eb9c96a82f
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GPG Key ID: B18E8928B3948D64
1 changed files with 14 additions and 8 deletions
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22
libavcodec/ratecontrol.c
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@ -56,20 +56,25 @@ void ff_write_pass1_stats(MpegEncContext *s)
s->header_bits);
}
static double get_fps(AVCodecContext *avctx)
static AVRational get_fpsQ(AVCodecContext *avctx)
{
if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
return av_q2d(avctx->framerate);
return avctx->framerate;
FF_DISABLE_DEPRECATION_WARNINGS
return 1.0 / av_q2d(avctx->time_base)
#if FF_API_TICKS_PER_FRAME
/ FFMAX(avctx->ticks_per_frame, 1)
return av_div_q((AVRational){1, FFMAX(avctx->ticks_per_frame, 1)}, avctx->time_base);
#else
return av_inv_q(avctx->time_base);
#endif
;
FF_ENABLE_DEPRECATION_WARNINGS
}
static double get_fps(AVCodecContext *avctx)
{
return av_q2d(get_fpsQ(avctx));
}
static inline double qp2bits(const RateControlEntry *rce, double qp)
{
if (qp <= 0.0) {
@ -332,12 +337,13 @@ static int init_pass2(MpegEncContext *s)
RateControlContext *rcc = &s->rc_context;
AVCodecContext *a = s->avctx;
int i, toobig;
double fps = get_fps(s->avctx);
AVRational fps = get_fpsQ(s->avctx);
double complexity[5] = { 0 }; // approximate bits at quant=1
uint64_t const_bits[5] = { 0 }; // quantizer independent bits
uint64_t all_const_bits;
uint64_t all_available_bits = (uint64_t)(s->bit_rate *
(double)rcc->num_entries / fps);
uint64_t all_available_bits = av_rescale_q(s->bit_rate,
(AVRational){rcc->num_entries,1},
fps);
double rate_factor = 0;
double step;
const int filter_size = (int)(a->qblur * 4) | 1;