Suitable parameters for hours of screen capture

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1















I need suitable parameters for very, very long screen captures using ffmpeg.



  • Quality: Only occasionally needed. If text is readable, that's enough usually. I can use -qscale:v *[0-32]*, of which higher actually means lower quality.

  • Efficiency: I expect the output video file size to increase nearly by nothing when nothing on the screen is moving.

  • In webm, I noticed a weakness that skipping to places not near the beginning of the video can be slow. Am I doing anything wrong? This only happens to webm.

My current setup:



ffmpeg -f x11grab -r 15 -i -qscale:v 32 -vcodec vp9 Screencast.webm


(15fps is enough for now)



Do you know an alternative?










share|improve this question




























    1















    I need suitable parameters for very, very long screen captures using ffmpeg.



    • Quality: Only occasionally needed. If text is readable, that's enough usually. I can use -qscale:v *[0-32]*, of which higher actually means lower quality.

    • Efficiency: I expect the output video file size to increase nearly by nothing when nothing on the screen is moving.

    • In webm, I noticed a weakness that skipping to places not near the beginning of the video can be slow. Am I doing anything wrong? This only happens to webm.

    My current setup:



    ffmpeg -f x11grab -r 15 -i -qscale:v 32 -vcodec vp9 Screencast.webm


    (15fps is enough for now)



    Do you know an alternative?










    share|improve this question


























      1












      1








      1








      I need suitable parameters for very, very long screen captures using ffmpeg.



      • Quality: Only occasionally needed. If text is readable, that's enough usually. I can use -qscale:v *[0-32]*, of which higher actually means lower quality.

      • Efficiency: I expect the output video file size to increase nearly by nothing when nothing on the screen is moving.

      • In webm, I noticed a weakness that skipping to places not near the beginning of the video can be slow. Am I doing anything wrong? This only happens to webm.

      My current setup:



      ffmpeg -f x11grab -r 15 -i -qscale:v 32 -vcodec vp9 Screencast.webm


      (15fps is enough for now)



      Do you know an alternative?










      share|improve this question
















      I need suitable parameters for very, very long screen captures using ffmpeg.



      • Quality: Only occasionally needed. If text is readable, that's enough usually. I can use -qscale:v *[0-32]*, of which higher actually means lower quality.

      • Efficiency: I expect the output video file size to increase nearly by nothing when nothing on the screen is moving.

      • In webm, I noticed a weakness that skipping to places not near the beginning of the video can be slow. Am I doing anything wrong? This only happens to webm.

      My current setup:



      ffmpeg -f x11grab -r 15 -i -qscale:v 32 -vcodec vp9 Screencast.webm


      (15fps is enough for now)



      Do you know an alternative?







      video ffmpeg screencasting screencast






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Jan 19 at 8:52









      Rui F Ribeiro

      39.9k1479134




      39.9k1479134










      asked Jan 18 at 23:37









      neverMind9neverMind9

      631317




      631317




















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