title: FFMPEG - convert video without losing resolution
body: <p>I am using ffmpeg to convert mp4 video from youtube. The video is HD 1080. When I convert it to mpeg2video, the video loses its sharpness, regardless of the <code>-s 1920x1080</code> parameter. How can I convert the video without losing picture sharpness? The command I use is:</p>
  
  <blockquote>
    <p>ffmpeg -i BBB.mp4 -vcodec mpeg2video -s1920x1080 -acodec copy -f mpegts BBB.ts</p>
  </blockquote>