[請問] 比較兩影像檔的優劣

[newline (漫長的等待與相遇)]

手邊剛好有一樣的影片 但兩種檔案大小卻差一倍

想比較兩者的優劣

因為大部分我看不懂 所以來這裡請教高手

我好奇的是

B檔案雖然大一倍 但解析度卻是6.75倍 FSP卻少一些
Bits/(Pixel*Frame)竟只有A的1/3 音訊也只有128K

到底該蒐藏哪個呢?

明明B比較清楚 可是A又好像必較好?

感謝


A   General
      Complete name :
      Format : Windows Media
      File size : 116 MiB
      Duration : 3mn 57s
      Overall bit rate mode : Constant
      Overall bit rate : 4097 Kbps
      Maximum Overall bit rate : 4163 Kbps
      Encoded date : UTC 2009-05-06 00:36:32.750

B   General
      Complete name :
      Format : AVI
      Format/Info : Audio Video Interleave
      File size : 236 MiB
      Duration : 4mn 1s
      Overall bit rate : 8203 Kbps
      Writing application : GOM Encoder (GAviWriter 1.0)

A   Video #2
      ID : 2
      Format : VC-1
      Format profile : MP@ML
      Codec ID : WMV3
      Codec ID/Info : Windows Media Video 9
      Codec ID/Hint : WMV3
      Description of the codec : Windows Media Video 9 - Professional
      Duration : 3mn 57s
      Bit rate mode : Constant
      Bit rate : 4 000 Kbps
      Width : 640 pixels
      Height : 480 pixels
      Display aspect ratio : 4:3
      Frame rate : 29.970 fps
      Resolution : 24 bits
      Scan type : Progressive
      Bits/(Pixel*Frame) : 0.434
      Stream size : 113 MiB (98%)
      Language : Korean

B   Video #0
      ID : 0
      Format : MPEG-4 Visual
      Format profile : Simple@L1
      Format settings, BVOP : No
      Format settings, QPel : No
      Format settings, GMC : No warppoints
      Format settings, Matrix : Default (H.263)
      Codec ID : XVID
      Codec ID/Hint : XviD
      Duration : 4mn 1s
      Bit rate : 7 998 Kbps
      Width : 1 920 pixels
      Height : 1 080 pixels
      Display aspect ratio : 16:9
      Frame rate : 23.976 fps
      Resolution : 24 bits
      Colorimetry : 4:2:0
      Scan type : Progressive
      Bits/(Pixel*Frame) : 0.161
      Stream size : 230 MiB (98%)
      Writing library : Lavc51.40.4

A   Audio #1
      ID : 1
      Format : WMA2
      Format profile : L2
      Codec ID : 161
      Codec ID/Info : Windows Media Audio 2
      Description of the codec : Windows Media Audio 9.1 - 128 kbps, 48 kHz,
stereo (A/V) 1-pass CBR
      Duration : 3mn 57s
      Bit rate mode : Constant
      Bit rate : 128 Kbps
      Channel(s) : 2 channels
      Sampling rate : 48.0 KHz
      Resolution : 16 bits
      Stream size : 3.62 MiB (3%)
      Language : Korean

B   Audio #1
      ID : 1
      Format : MPEG Audio
      Format version : Version 1
      Format profile : Layer 3
      Codec ID : 55
      Codec ID/Hint : MP3
      Duration : 4mn 1s
      Bit rate mode : Constant
      Bit rate : 192 Kbps
      Channel(s) : 2 channels
      Sampling rate : 48.0 KHz
      Resolution : 16 bits
      Stream size : 5.52 MiB (2%)
      Alignment : Aligned on interleaves
      Interleave, duration : 24 ms (0.58 video frame)
      Interleave, preload duration : 24 ms
      Writing library : LAME3.97 (beta)




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推 kcl0801:你是不是看錯了 A才是128K 再說檔案大小跟解析度大小又不
→ kcl0801:一定會相等 用這個來判斷實在很奇怪   我選B
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