동일 영상을 mp4와 wmv로 서로 다르게 인코딩한 파일을 특정사이트에서 배포하는데

 

비트레이트가 mp4는 2000, wmv는 2600

용량은 wmv가 100메가정도 더 많습니다.

 

wmv가 더 화질이 좋을줄 알았는데 원본크기일때는 별차이를 못느끼고, 전체화면으로 확대하니 오히려 mp4는 비교적 깨끗한데, wmv는 계단현상이 생기네요.

 

wmv는 Video
ID                               : 1
Format                           : WMV2
Codec ID                         : WMV2
Codec ID/Info                    : Windows Media Video 8
Description of the codec         : wmv2
Duration                         : 37mn 37s
Bit rate                         : 2 523 Kbps
Width                            : 854 pixels
Height                           : 480 pixels
Display aspect ratio             : 16:9
Frame rate                       : 29.970 fps
Bit depth                        : 8 bits
Bits/(Pixel*Frame)               : 0.205
Stream size                      : 679 MiB (91%)

 

mp4는 Video
ID                               : 1
Format                           : AVC
Format/Info                      : Advanced Video Codec
Format profile                   : High@L3.1
Format settings, CABAC           : Yes
Format settings, ReFrames        : 5 frames
Format settings, GOP             : M=1, N=60
Codec ID                         : avc1
Codec ID/Info                    : Advanced Video Coding
Duration                         : 37mn 37s
Duration_LastFrame               : -9ms
Bit rate mode                    : Variable
Bit rate                         : 2 000 Kbps
Width                            : 854 pixels
Height                           : 480 pixels
Display aspect ratio             : 16:9
Frame rate mode                  : Constant
Frame rate                       : 29.970 fps
Color space                      : YUV
Chroma subsampling               : 4:2:0
Bit depth                        : 8 bits
Scan type                        : Progressive
Bits/(Pixel*Frame)               : 0.163
Stream size                      : 536 MiB (90%)
Writing library                  : x264 core 125 r2208 d9d2288
Encoding settings                : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=8 / 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=36 / lookahead_threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=60 / keyint_min=6 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=abr / mbtree=1 / bitrate=2000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Tagged date                      : UTC 2012-08-24 07:05:04

 

이런 인코딩 정보가 이렇습니다.

용량도 더크고 및 비트레이트도 더 높은 wmv가 오히려 mp4보다 더 안좋은건가요?