Changes for page Video Capture of Computer Screens
Last modified by Drunk Monkey on 2024-10-09 05:32
From version
20.1


edited by Drunk Monkey
on 2022-01-27 15:26
on 2022-01-27 15:26
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Uploaded new attachment "image-20220127232635-16.png", version {1}
To version
26.1


edited by Drunk Monkey
on 2022-01-27 16:23
on 2022-01-27 16:23
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... ... @@ -52,10 +52,15 @@ 52 52 \\Click on OK, and ffmpeg will be available for use on the command line. 53 53 [[image:image-20220127232109-14.png]] 54 54 \\Click on OK to close the Environment Variables settings, and then click on OK to close the System Properties. 55 -1. 56 -1. 57 - 58 -In newer 55 + 56 +1. Start a command line window by typing cmd.exe into the search bar and open the Command Prompt 57 +[[image:image-20220127232411-15.png]] 58 + 59 +1. in that command prompt, type in "ffmpeg" and you should see this: 60 +[[image:image-20220127232635-16.png]] 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 +[[image:image-20220127232731-17.png]] 63 +\\You are now ready to capture video 59 59 ))) 60 60 61 61 (% class="col-xs-12 col-xs-6" %) ... ... @@ -67,7 +67,49 @@ 67 67 ))) 68 68 ))) 69 69 75 +---- 70 70 71 71 == Video Capture == 72 72 73 73 ---- 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 +)))
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