Hi10P영상을 어떻게 해야 손실을 최소로 해서 8비트로 바꿀수있나요?

일단

Video 부분의 정보가

Video
ID                                       : 2
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High 10@L5.0
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 9 frames
Muxing mode                              : Header stripping
Codec ID                                 : V_MPEG4/ISO/AVC
Duration                                 : 23mn 54s
Bit rate mode                            : Variable
Maximum bit rate                         : 40.0 Mbps
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 29.970 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 10 bits
Scan type                                : Progressive
Title                                    : ANK-Raws
Writing library                          : x264 core 122 r2183+656+26 13893a7 tMod [10-bit@4:2:0 X86]
Encoding settings                        : cabac=1 / ref=9 / deblock=1:-2:-2 / analyse=0x3:0x133 / me=umh / subme=11 / psy=1 / fade_compensate=0.00 / psy_rd=0.60:0.00 / mixed_ref=1 / me_range=48 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=6,3 / fast_pskip=1 / chroma_qp_offset=-2 / threads=18 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / fgo=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=0 / crf=17.5000 / qcomp=0.60 / qpmin=8 / qpmax=36 / qpstep=9 / vbv_maxrate=40000 / vbv_bufsize=50000 / crf_max=0.0 / nal_hrd=vbr / ip_ratio=1.40 / pb_ratio=1.30 / aq=4:1.00
Language                                 : English
Default                                  : Yes
Forced                                   : No
Color primaries                          : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer characteristics                 : BT.709-5, BT.1361
Matrix coefficients                      : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

이렇습니다

인코딩을 할때

사용팁 부분을 보고 참고하려고 했는데

미묘하게 UI가 달라서..

파일 형식 mkv에

비디오 코덱 libx264

퀀타이저에, 비디오 퀀타이저 0

코덱설정 가서

프로필 none 레벨 auto 프리셋 이건 마음대로

튜닝 none 으로 두면  손실 최소화 할수 있는걸까요?

근데 저러면 또 용량이 너무 커지더군요

어떻게 하면 10->8비트의 변환을하면서 효율적일지...