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willofmaine

Quicktime Screen Recordings

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Sometimes I'll make screen recordings using Quicktime, and the files generated are huge.  Things like 300 MB for a minute or two of screen time.  Let's call it 150 MB per minute.  I have found that I can then export them at a smaller size and reduce their file sizes, but, the quality seems to drop off quit fast, especially with respect to the new file size.

 

Meanwhile, a 90 minute movie on a DVD, while not HD or Blu-Ray or whatever, is typically at a very decent resolution.  But I think a DVD is something like 4.7 GB, which translates to something like 50 MB per minute of screen time.

 

So, I was just wondering if anyone might be able to explain this difference and, especially, is there anything I can do to significantly compress Quicktime screen recordings without losing so much image quality?...

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I work with compression related tasks like this all the time! Say hello to my little friend:

https://handbrake.fr/downloads.php

Handbrake is a compression application that can, even if you have very little idea what all the settings it offers are talking about, significantly reduce filesize of recordings without compromising on quality. It's totally free and updated regularly. You can usually just pick one of the presets on the right (Like Fast1080p30 for 1920x1080 resolution at 30 frames per second) and slap Start and it'll shave your files down from any recording source significantly. Once you pick a format you like you can save it as the default, or tweak it slightly for things like keeping a 4K recording at that resolution.

 

I use it even on the tech tip videos I export from Screenflow which are already somewhat compressed, and it can usually save me an average of 30-50% on file size with no noticeable quality issues.

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Excellent, I will look into that!  (When Quicktime isn't producing entirely black video, as it seems to be doing today...).  Thanks Jim!

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Hi, I use Powerpoint (Which usually comes with Office package) for all my videos. Just go insert video and screen recording.

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Also for a fairly static/slow moving presentation like a screen movie, consider setting your frame rate way down.  8 FPS or even 5 FPS might be enough to get you the information you want to convey without the overhead of a full 30 or 60 FPS capture. Also, if you don't really need full 1080p, consider capturing at 720P. This will cut the number of pixels by over 50%. Or even going to a tool like ScreenFlow ($$) and only capturing the part of the screen you need rather than you whole 4K monitor.

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@Pat Stanford That makes sense, except that in Quicktime I can't seem to find any way to control the frame rate.  I can however use a marquee to reduce how much of the screen I'm recording, but usually I want to record most of it anyway so that all of the Vectorworks palettes & tolls that I'm using are visible....

 

@Alan Woodwell In Powerpoint, I could only find an option to insert a movie; nothing about screen recordings.  And I'm not sure how getting a video file into Powerpoint helps reduce its file size?...

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Ah!  I'm still using Office 2011 (I hadn't read good things about more recent versions...).  So, given all the "update this" and "update that" warnings in those instructions, I'm guessing I probably can't do it...

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15 hours ago, willofmaine said:

@Pat Stanford That makes sense, except that in Quicktime I can't seem to find any way to control the frame rate.  I can however use a marquee to reduce how much of the screen I'm recording, but usually I want to record most of it anyway so that all of the Vectorworks palettes & tolls that I'm using are visible....

 

@Alan Woodwell In Powerpoint, I could only find an option to insert a movie; nothing about screen recordings.  And I'm not sure how getting a video file into Powerpoint helps reduce its file size?...

Unfortunately Quicktime Player (10) does not have most of the options that the old Quicktime 7 did. Jim's recommendation of Handbrake I think will change the frame rate as an option also.

 

If you are going to do this very often, I highly recommend ScreenFlow. $130, but it offers a lot of benefits in what it captures and how.

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On 4/4/2018 at 1:46 PM, JimW said:

I work with compression related tasks like this all the time! Say hello to my little friend:

https://handbrake.fr/downloads.php
 

 

An easy-to-use fantastic tool. I don't use it every day, but it works easily quickly flawlessly every time I do.

 

And—it's free

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