Changes for page Video Capture of Computer Screens
Last modified by Drunk Monkey on 2024-10-09 05:32
From version
22.1


edited by Drunk Monkey
on 2022-01-27 15:27
on 2022-01-27 15:27
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To version
27.1


edited by Drunk Monkey
on 2022-01-27 16:24
on 2022-01-27 16:24
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... ... @@ -22,16 +22,16 @@ 22 22 === Windows === 23 23 24 24 1. Run the VLC installer 25 + 25 25 1. Install 7-zip 27 + 26 26 1. Extract the contents of the FFmpeg zip file into a suitable directory. I going to use C:\Local\ffmpeg\ as my FFmpeg installation location for this example. You should see something similar to this: 27 -[[image:image-20220127221835-1.png]]((( 28 - 29 -The contents of the ffmpeg filder should look like this: 29 +[[image:image-20220127221835-1.png]] 30 +\\The contents of the ffmpeg filder should look like this: 30 30 [[image:image-20220127225738-2.png]] 31 31 \\Select all the files and move them into the installation directory. That is C:\Local\ffmpeg\ in this example. 32 32 [[image:image-20220127225847-3.png]] 33 33 34 -))) 35 35 1. Next, add the location of the ffmpeg\bin directory to the system path. This is necessary so you can run the command from the command line from a command shell. 36 36 \\Go to the file explorer, and look in the left hand folder list for "This PC" or "My PC" or whatever it is called on your system. 37 37 [[image:image-20220127230601-5.png]] ... ... @@ -60,10 +60,7 @@ 60 60 [[image:image-20220127232635-16.png]] 61 61 \\If you get an error like this, either you typed in the command incorrectly (as I did in the following example) or you did not configured your user path correctly and you have to go back and correct it 62 62 [[image:image-20220127232731-17.png]] 63 - 64 -1. 65 - 66 -In newer 63 +\\You are now ready to capture video 67 67 ))) 68 68 69 69 (% class="col-xs-12 col-xs-6" %) ... ... @@ -75,7 +75,49 @@ 75 75 ))) 76 76 ))) 77 77 75 +---- 78 78 79 79 == Video Capture == 80 80 81 81 ---- 80 + 81 +(% class="row" %) 82 +((( 83 +(% class="col-xs-12 col-xs-6" style="border-right:black solid 1px;" %) 84 +((( 85 +=== Windows Video Capture === 86 + 87 +Open a command window, and run the following commands: 88 + 89 +>(% style="font-size:14px" %)cd Desktop 90 +>(% style="font-size:14px" %)ffmpeg -f gdigrab -t 6 -draw_mouse 1 -framerate 60 -i desktop -c:v libx264rgb -crf 0 -preset ultrafast screenCapture.mkv 91 + 92 +(% style="font-size:14px" %)This will create a video file called "screenCapture.mkv" on your desktop that you can replay using VLC Media Player. 93 + 94 +(% style="font-size:14px" %)The parameters to the ffmpeg command have the following meaning 95 + 96 +(% class="min" %) 97 +|-f gdigrab|gdigrab is the windows framebuffer, where the screen is stored 98 +|-t 6|capture 6 seconds of video and exit. 3600 = 1 hour, 14400 = 4 hours 99 +|-draw_mouse 1|capture the mouse pointer 100 +|-i desktop|capture the entire desktop - remember to maximize your window 101 +|-c:v libx264rgb|this video encoder will preserve the rgb color values losslessly 102 +|-crf 0|lossless compression 103 +|-preset ultrafast|save the data as quickly as possible, don't waste too much time compressing the data 104 + 105 +If you want to save the for long term storage, you can losslessly compress the file even further with the following command 106 + 107 +>(% style="font-size:14px" %)fmpeg -i screenCapture.mkv -c:v libx264rgb -crf 0 -preset veryslow screenCaptureS.mkv 108 + 109 +It'll take a while, but it will create a video file that should be less than half the size of the original. 110 +))) 111 + 112 +(% class="col-xs-12 col-xs-6" %) 113 +((( 114 +=== Mac Video Capture === 115 + 116 +sfasd 117 + 118 +asdfasdf 119 +))) 120 +)))