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I use ffmpeg to record a window using this code:
ffmpeg.exe
-f dshow
-y
-i video="screen-capture-recorder":audio="virtual-audio-capturer":audio="Microphone (USB Audio Device)"
-framerate 15
-vcodec libx264
-crf 0
-preset ultrafast
-acodec pcm_s16le
-vf crop=Width:Height:Left:Top
output.flv
But the problem is i might move the window, this leads to recording an area without the window i want.
How can i capture a specific window that I am able to move it?
Edit: I also used gdigrab to capture my window (Skype for instance) instead of dshow:
ffmpeg.exe
-y
-f dshow
-i audio="virtual-audio-capturer":audio="Microphone (USB Audio Device)"
-f gdigrab
-draw_mouse 0
-i title="Skype"
-framerate 30
-vcodec libx264
-crf 0
-preset ultrafast
-acodec pcm_s16le
output.flv
But the conference is black...
393
-f x11grab is what actually tells FFmpeg to record your screen. You shouldn't change that. -i :0.0+0,0 is where you specify the x and y offset of the top left corner of the area that you want to record. For example, use :0.0+100,200 to have an x offset of 100 and an y offset of 200.
Screen recorder, screen recording software, screencasting software, and screen capture software are different names for the same tool that lets you to record a computer screen's output. While screen capture tools differ in price and functionality, most share several features, such as: adjustable video frame.
This example works for me:
ffmpeg -f gdigrab -framerate 30 -i title="german.avi - VLC media player" -b:v 3M germ.flv
where "title" means actual title of a target window.
Hope this will help.
95
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