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Export Data Rate Question

I can see that changing the Data Rate in the Export settings changes the file size but will this change the quality if the recording is only a screen recording and not video footage.

Also...

Are there any suggested Data Rate values  for say...

3840 x 2160 Screen recording and 1920 x 1080 screen recording.

Thanks.

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 4 mths ago
    • Reported - view

    Data rate can impact quality as well as file size. One has to make a judgment on whether the quality change is noticeable relative to the screen it will be played back on. The content is also a factor as faster motion will usually require a higher data rate to maintain quality. As a result, there's no easy formula. Sometimes you have to do test encodes.

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      • Ian Barber
      • Ian_Barber
      • 4 mths ago
      • Reported - view

      CraigS  Thanks for the reply, I will do some testing. Out of interest does it harm quality a lot if you then put the rendered video through something like HandBrake to try and get the file size down a bit.

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 4 mths ago
    • Reported - view
    Ian Barber said:
    does it harm quality a lot if you then put the rendered video through something like HandBrake to try and get the file size down a bit.

     Yes it can. If you're going that route I'd export Apple ProRes and use that as the master in Handbrake. It's never good to compress a compressed file. 

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      • Ian Barber
      • Ian_Barber
      • 4 mths ago
      • Reported - view

      CraigS This is my standard workflow.

      • Record computer screen on iMac 27 inch 5K monitor at 2560 x 1440 resolution
      • Resize to 1920 x 1080 in Screen Flow and use Zoom and pan when needed to focus on important areas. ( I am guessing I am still using the original pixels even though I have resized it )
      • Upload final video to YouTube at 1920 x 1080p

      Question:
      Do you have any Export screenshots which would show me some optimal settings to use please.

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      • CraigSModerator
      • Telestream Desktop Forum Moderator
      • CraigS
      • 4 mths ago
      • Reported - view

      Ian Barber We have a Publish to YouTube setting you can use.

      YouTube has these recommendations.
      Most important is datarate relative to frame size and frame rate. You can use that in a custom setting in ScreenFlow. Keep in mind content action is important.

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