youtube和xuite的畫質比較 - Google

By Selena
at 2011-03-09T20:19
at 2011-03-09T20:19
Table of Contents
→ silky7:你有沒有試過把xuite的影片抓下來 和你原始上傳的影片比對03/09 18:16
→ silky7:確認一下xuite是否真的不會重新壓縮影片 因為不壓縮影片蠻 03/09 18:16
→ silky7:大的 流量很驚人 還有擷取螢幕軟體推薦amarecco03/09 18:18
請放心,xuite有說過不轉檔的條件。
可以參考:
http://blog.xuite.net/xuite.net/xuite/30742498
《教學》影音 - MP4 (H.264+AAC) 免轉檔機制 全面開放
http://vlog.xuite.net/play/a1ZjQnZULTM0NDI1NjUubXA0
關於這個影片,我用firefox抓下來的結果是:
General
Complete name : D:\movie\kVcBvT-3442565.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 105 MiB
Duration : 3mn 41s
Overall bit rate : 3 972 Kbps
Encoded date : UTC 2011-03-06 11:14:15
Tagged date : UTC 2011-03-06 11:14:15
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Format settings, GOP : M=4, N=38
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 3mn 40s
Bit rate mode : Variable
Bit rate : 3 800 Kbps
Maximum bit rate : 12.6 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 30.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.061
Stream size : 99.6 MiB (95%)
Writing library : x264 core 112 r1867 22bfd31
Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 /
me=hex / subme=7 / 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 / sliced_threads=0 / nr=0 / decimate=1 /
interlaced=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 /
b_bias=0 / direct=1 / weightb=1 / open_gop=1 / weightp=2 / keyint=250 /
keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass /
mbtree=1 / bitrate=3800 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=51 /
qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00
Encoded date : UTC 2011-03-06 10:58:22
Tagged date : UTC 2011-03-05 11:38:54
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Format settings, SBR : No
Codec ID : 40
Duration : 3mn 41s
Bit rate mode : Variable
Bit rate : 192 Kbps
Maximum bit rate : 225 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz
Stream size : 5.00 MiB (5%)
Encoded date : UTC 2011-03-06 11:14:15
Tagged date : UTC 2011-03-05 11:38:54
xuite如果會再次轉檔的話,
mediainfo顯示的資訊不會和我用一樣的編碼器(x264)吧?
而且連x264的版本都一樣吧?
而且連所下的轉檔參數都一樣吧?
所以不用懷疑xuite的好心,
它真的沒有再次轉檔 XD
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