인코딩 초보입니다. 첫 번째 이미지가 원본이고 두 번째가 x264, main, 4.1, veryfast로 변환한 영상입니다.
뭐가 잘못된 건지 변환하고 보니 선명도가 확 떨어졌는데요. 설정을 어떻게 해야 원본과 동일한 수준으로 변환 가능한지 궁금합니다~
General
Unique ID : 337293202938792431658118841383863808392 (0xFDC04ED652B2FF7869A48F2E9C397188)
Complete name : F:\Downloads\2014 브라질 월드컵\FIFA World Cup 2014 720p\Game 3 - Group stage (Group B) - Spain vs Netherlands - HD Feed 720p - Papai.mkv
Format : Matroska
Format version : Version 4 / Version 2
File size : 5.77 GiB
Duration : 2h 19mn
Overall bit rate : 5 926 Kbps
Writing application : Lavf55.22.100
Writing library : Lavf55.22.100
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High 4:2:2@L3.2
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 2h 19mn
Bit rate : 5 232 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 50.000 fps
Color space : YUV
Chroma subsampling : 4:2:2
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.114
Stream size : 5.09 GiB (88%)
Writing library : x264 core 140 r2377 1ca7bb9
Encoding settings : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=6 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=30 / rc=crf / mbtree=1 / crf=21.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Default : Yes
Forced : No
Audio #1
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : A_AC3
Duration : 2h 19mn
Bit rate mode : Constant
Bit rate : 192 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Delay relative to video : -64ms
Stream size : 191 MiB (3%)
Default : Yes
Forced : No
Audio #2
ID : 3
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : A_AC3
Duration : 2h 19mn
Bit rate mode : Constant
Bit rate : 192 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Delay relative to video : -64ms
Stream size : 191 MiB (3%)
Default : Yes
Forced : No
Audio #3
ID : 4
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : A_AC3
Duration : 2h 19mn
Bit rate mode : Constant
Bit rate : 192 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Delay relative to video : -64ms
Stream size : 191 MiB (3%)
Default : Yes
Forced : No
General
Complete name : F:\Downloads\[SHANA]Game 3 - Group stage (Group B) - Spain vs Netherlands - HD Feed 720p - Papai.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 5.97 GiB
Duration : 2h 19mn
Overall bit rate mode : Variable
Overall bit rate : 6 132 Kbps
Writing application : ShanaEncoder 2.1
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 2h 19mn
Bit rate : 6 000 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.260
Stream size : 5.80 GiB (97%)
Writing library : x264 core 140
Encoding settings : cabac=1 / ref=1 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=2 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=6 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=10 / rc=abr / mbtree=1 / bitrate=6000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 2h 19mn
Duration_LastFrame : -16ms
Bit rate mode : Variable
Bit rate : 165 Kbps
Maximum bit rate : 192 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 165 MiB (3%)
원본 서브샘플링이 4:2:2인데 4:2:0으로 바뀌는 점이 색감 변화에 약간 관계있지 않을까 싶기도
하지만 그것보다도 가장 중요한 X264기본 설정이 너무 낮습니다..
Very Fast는 450p정도 되는 화질을 빨리 인코딩 하려는 목적외에는 사용하지 말아야 하고
기본적으로 Medium이상을 사용하셔야 괜찮은 화질이 나옵니다..
지금 사용하신 설정은 지나치게 낮아요..