On Mon, Aug 17, 2020 at 7:08 PM Joose Sainio <joose.sai...@tuni.fi> wrote: > > On 7.8.2020 5.40, myp...@gmail.com wrote: > > On Sun, Jul 26, 2020 at 8:45 PM Jun Zhao <mypopy...@gmail.com> wrote: > >> From: Jun Zhao <barryjz...@tencent.com> > >> > >> Export choosen pict_type and qp. > >> > >> Signed-off-by: Jun Zhao <barryjz...@tencent.com> > >> --- > >> libavcodec/libkvazaar.c | 30 ++++++++++++++++++++++++++++++ > >> 1 file changed, 30 insertions(+) > >> > >> diff --git a/libavcodec/libkvazaar.c b/libavcodec/libkvazaar.c > >> index 71c9c8f..9032547 100644 > >> --- a/libavcodec/libkvazaar.c > >> +++ b/libavcodec/libkvazaar.c > >> @@ -37,6 +37,7 @@ > >> > >> #include "avcodec.h" > >> #include "internal.h" > >> +#include "packet_internal.h" > >> > >> typedef struct LibkvazaarContext { > >> const AVClass *class; > >> @@ -170,6 +171,7 @@ static int libkvazaar_encode(AVCodecContext *avctx, > >> kvz_data_chunk *data_out = NULL; > >> uint32_t len_out = 0; > >> int retval = 0; > >> + int pict_type; > >> > >> *got_packet_ptr = 0; > >> > >> @@ -257,6 +259,34 @@ static int libkvazaar_encode(AVCodecContext *avctx, > >> avpkt->flags |= AV_PKT_FLAG_KEY; > >> } > >> > >> + switch (frame_info.slice_type) { > >> + case KVZ_SLICE_I: > >> + pict_type = AV_PICTURE_TYPE_I; > >> + break; > >> + case KVZ_SLICE_P: > >> + pict_type = AV_PICTURE_TYPE_P; > >> + break; > >> + case KVZ_SLICE_B: > >> + pict_type = AV_PICTURE_TYPE_B; > >> + break; > >> + default: > >> + av_log(avctx, AV_LOG_ERROR, "Unknown picture type encountered.\n"); > >> + return AVERROR_EXTERNAL; > >> + } > >> +#if FF_API_CODED_FRAME > >> +FF_DISABLE_DEPRECATION_WARNINGS > >> + avctx->coded_frame->pict_type = pict_type; > >> +FF_ENABLE_DEPRECATION_WARNINGS > >> +#endif > >> + > >> + ff_side_data_set_encoder_stats(avpkt, frame_info.qp * FF_QP2LAMBDA, > >> NULL, 0, pict_type); > >> + > >> +#if FF_API_CODED_FRAME > >> +FF_DISABLE_DEPRECATION_WARNINGS > >> + avctx->coded_frame->quality = frame_info.qp * FF_QP2LAMBDA; > >> +FF_ENABLE_DEPRECATION_WARNINGS > >> +#endif > >> + > >> *got_packet_ptr = 1; > >> } > >> > >> -- > >> 2.7.4 > >> > > ping ? > Sorry, I forgot I was subscribed to the list on the old organization > so the message didn't go through originally. > > In terms of Kvazaar this seems ok but the QP to lambda conversion will > result > in vastly different lambda value than what Kvazaar would have used > internally (and in fact the FF_QP2LAMBDA macro states it is for h.263). > I can't comment whether this is problem on the ffmpeg side. > > The correct formula for hevc/h.265 would be > lambda = 0.57 * pow(2.0, (qp - 12 / 3.0)) This is the other issue, I think, will try to fix it. > > - Joose > _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
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