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Last active February 24, 2023 03:43
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Tips on screen recording
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video.md

Recording screens and creating small video files

Record less frames per second

Normal speed is 60 frames per second but you can perceive motion using less frames: 24 on movies, 12 on animations.

So using 12 frames youre recording a fifth (20%) and if you're recording a slide you can go even further using 5fps and keeping only 5% of video data.

Reduce the output resolution

Sometimes the text is not important or is big enought that you can reduce the output resolution to gain more space

  • 1080p = 100%
  • 720p = 44%
  • 540p = 25% (after this point things become hard to read)

Use the best realtime compressor possible to record

The recording process can make your computer cry, give preference to hardware accelerated video codecs for the recording moment. Intel has Quicksync inside its processors (https://en.wikipedia.org/wiki/Intel_Quick_Sync_Video)

Use a good quality to record

You can always compress more later, but only compress again if you have time to run a better compressor.

Ex.:

  • Original take: 1080p 8fps x264 Quicksync Balanced - 145mb
  • Compression 1: 720p 5fps x265 Qualit level 27 - 43Mb
  • Compression 2: 540p 5fps x265 Qualit level 27 - 35Mb

x264 Q20 - SD - 30fps

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