diff options
| -rw-r--r-- | libhb/enc_qsv.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/libhb/enc_qsv.c b/libhb/enc_qsv.c index 765777f7e..228eb401c 100644 --- a/libhb/enc_qsv.c +++ b/libhb/enc_qsv.c @@ -978,10 +978,21 @@ int encqsvInit(hb_work_object_t *w, hb_job_t *job) else { // introduced in API 1.1 + // HEVC 10b has QP range as [-12;51] + // with shift +12 needed to be in QSV's U16 range + unsigned int low_limit = 0; + unsigned int shift = 0; + + if (pv->param.videoParam->mfx.CodecProfile == MFX_PROFILE_HEVC_MAIN10) + { + low_limit = -12; + shift = 12; + } pv->param.videoParam->mfx.RateControlMethod = MFX_RATECONTROL_CQP; - pv->param.videoParam->mfx.QPI = HB_QSV_CLIP3(0, 51, job->vquality + pv->param.rc.cqp_offsets[0]); - pv->param.videoParam->mfx.QPP = HB_QSV_CLIP3(0, 51, job->vquality + pv->param.rc.cqp_offsets[1]); - pv->param.videoParam->mfx.QPB = HB_QSV_CLIP3(0, 51, job->vquality + pv->param.rc.cqp_offsets[2]); + pv->param.videoParam->mfx.QPI = HB_QSV_CLIP3(low_limit, 51, job->vquality + pv->param.rc.cqp_offsets[0]) + shift; + pv->param.videoParam->mfx.QPP = HB_QSV_CLIP3(low_limit, 51, job->vquality + pv->param.rc.cqp_offsets[1]) + shift; + pv->param.videoParam->mfx.QPB = HB_QSV_CLIP3(low_limit, 51, job->vquality + pv->param.rc.cqp_offsets[2]) + shift; + // CQP + ExtBRC can cause bad output pv->param.codingOption2.ExtBRC = MFX_CODINGOPTION_OFF; } |