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POffmpeg capture output from child window
 

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  1. POffmpeg capture output from child window
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    <p>using <code>xwininfo -all</code> I'm able to see the stats of any window, along with its child windows</p> <pre><code>xwininfo: Window id: 0x3c000ba "Electro - The Slag &amp; Prototype Raptor - Crescendo - YouTube - Mozilla Firefox" Root window id: 0xa8 (the root window) (has no name) Parent window id: 0xc001b8 (has no name) 2 children: 0x3c00175 (has no name): () 1388x876+0+0 +52+24 5 children: 0x3d210ab (has no name): () 854x510+225+197 +277+221 1 child: 0x3d210ac (has no name): () 854x510+0+0 +277+221 1 child: 0x40404de "plugin-container": ("plugin-container" "Plugin-container") 854x510+0+0 +277+221 2 children: 0x40404e1 (has no name): () 854x510+0+0 +277+221 0x40404df (has no name): () 1x1+-1+-1 +276+220 0x3ddbcf2 (has no name): () 640x390+225+162 +277+186 1 child: 0x3ddbcf3 (has no name): () 640x390+0+0 +277+186 1 child: 0x403d545 "plugin-container": ("plugin-container" "Plugin-container") 640x390+0+0 +277+186 2 children: 0x403d548 (has no name): () 640x390+0+0 +277+186 0x403d546 (has no name): () 1x1+-1+-1 +276+185 0x3dac7f9 (has no name): () 640x390+225+162 +277+186 1 child: 0x3dac7fa (has no name): () 640x390+0+0 +277+186 1 child: 0x4039d8b "plugin-container": ("plugin-container" "Plugin-container") 640x390+0+0 +277+186 2 children: 0x4039d8e (has no name): () 640x390+0+0 +277+186 0x4039d8c (has no name): () 1x1+-1+-1 +276+185 0x3c3f939 (has no name): () 640x390+225+197 +277+221 1 child: 0x3c3f93a (has no name): () 640x390+0+0 +277+221 1 child: 0x4011918 "plugin-container": ("plugin-container" "Plugin-container") 640x390+0+0 +277+221 2 children: 0x401191b (has no name): () 640x390+0+0 +277+221 0x4011919 (has no name): () 1x1+-1+-1 +276+220 0x3c0d1dc (has no name): () 1x1+0+97 +52+121 1 child: 0x3c0d1dd (has no name): () 1x1+0+0 +52+121 1 child: 0x4002c1e "plugin-container": ("plugin-container" "Plugin-container") 1x1+0+0 +52+121 2 children: 0x4002c40 (has no name): () 1x1+0+0 +52+121 0x4002c1f (has no name): () 1x1+-1+-1 +51+120 0x3c000bb (has no name): () 1x1+-1+-1 +51+23 Absolute upper-left X: 52 Absolute upper-left Y: 24 Relative upper-left X: 0 Relative upper-left Y: 0 Width: 1388 Height: 876 Depth: 24 Visual: 0x23 Visual Class: TrueColor Border width: 0 Class: InputOutput Colormap: 0x20 (installed) Bit Gravity State: NorthWestGravity Window Gravity State: NorthWestGravity Backing Store State: NotUseful Save Under State: no Map State: IsViewable Override Redirect State: no Corners: +52+24 -0+24 -0-0 +52-0 -geometry 1388x876-0-0 Bit gravity: NorthWestGravity Window gravity: NorthWestGravity Backing-store hint: NotUseful Backing-planes to be preserved: 0xffffffff Backing pixel: 0 Save-unders: No Someone wants these events: KeyPress KeyRelease ButtonPress ButtonRelease EnterWindow LeaveWindow PointerMotion Exposure VisibilityChange StructureNotify FocusChange PropertyChange Do not propagate these events: Override redirection?: No Window manager hints: Client accepts input or input focus: Yes Initial state is Normal State Displayed on desktop 0 Window type: Normal Window state: Maximized Vert Maximized Horz Process id: 4087 on host jb Frame extents: 0, 0, 0, 0 Normal window size hints: Program supplied minimum size: 18 by 97 Program supplied maximum size: 1073741824 by 1073741824 Program supplied window gravity: NorthWestGravity No zoom window size hints defined No window shape defined No border shape defined </code></pre> <p>However, if I try capturing from the screen given the size and offset of the child window, then I risk losing data when another window floats ontop of it, I switch to another tab while recording, I resize the child window, or move the child window. Instead, I'd like to use ffmpeg to capture from specifically that child window. </p> <p>Ideas? Tips? Maybe some other hacks to accomplish this? Thanks :)</p>
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