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Sampling video with FFmpeg H.264/AVC JM Reference Software

Sampling video with FFmpeg H.264/AVC JM Reference Software. FFmpeg. 將拍好的影片和 ffmpeg 放在同檔案目錄下 打開 命令提示 字元 ( cmd.ere ) Change directory 到該目錄 ffmpeg - i ( 原始檔案名稱 ). 副檔名 - s qcif - pix_fmt yuv420(four-two zero)p ( 轉檔名稱 ). yuv. FFmpeg. yuv viewer.

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Sampling video with FFmpeg H.264/AVC JM Reference Software

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  1. Sampling videowith FFmpegH.264/AVC JM Reference Software

  2. FFmpeg

  3. 將拍好的影片和ffmpeg放在同檔案目錄下 打開命令提示字元 (cmd.ere) Change directory 到該目錄 ffmpeg -i(原始檔案名稱).副檔名 -s qcif-pix_fmt yuv420(four-two zero)p (轉檔名稱).yuv

  4. FFmpeg

  5. yuv viewer http://wftp3.itu.int/av-arch/jvt-site/software_tools/ 下載YUV_viewer.exe

  6. Download H.264/AVC reference software • http://iphome.hhi.de/suehring/tml/download/ • 下載JM18.5.zip

  7. 必須設定cfg來進行H.264的 Encode和decode

  8. Cfg file • 參數設定相關: doc/ JM Reference Software Manual.pdf 需更動cfg檔案: encoder.cfg, decoder.cfg

  9. H.264/ AVCencode 方法 • 在visual studio中compile lencod及ldecod得到 lencod.exe及ldecod.exe • Default cfg檔案: encoder.cfg, decoder.cfg • 利用cmd.exe, 鍵入: • lencod/ldecod –h: encoder/decoder使用說明 • Lencod/ldecod–d [default].cfg: 設定default cfg檔案並進行編碼 • Lencod/ldecod –f [cfgfile].cfg: 利用指定cfg檔案進行編碼

  10. MATLAB Graphic functions

  11. Rate Distortion Data

  12. >> r=[14.18,103.41, 134.91,153.15, 242.79]; % sort bitrate >> d=[0.9692, 0.9963, 0.9968, 0.9932, 0.9987]; >> plot(r,d,'Marker','o'); %畫出曲線 再點上標出o記號 >> title('Plot: Rate Distortion'); %設定圖形表頭, 以單引號引起 >> xlabel('Bitrate'); %設定x軸標籤為Rate >> ylabel('Y SSIM'); %設定y軸標籤為Y SSIM

  13. Plot: Name-Value Pair Arguments • 'Color' : RGB Vector/ Short Name/ Long Name • 'LineStyle' : '-' (default) | '--' | ':' | '-.' | 'none' • 'LineWidth' : 0.5 (default) | scalar • 'Marker' : 'none' (default) | string • 'MarkerSize' :6 (default) | scalar • http://www.mathworks.com/help/matlab/ref/plot.html

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