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transitive-bullshit / ffmpeg-gl-transition

FFmpeg filter for applying GLSL transitions between video streams.
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ques for transition #6

Closed willyangyang closed 6 years ago

willyangyang commented 6 years ago

I make the ffmpeg successfully,but I meet the problems "Error initializing filter 'gltransition' Error initializing complex filters. Operation not permitted" when I call the command“./ffmpeg -i media/0.mp4 -i media/1.mp4 -filter_complex gltransition -y out.mp4”. Then I install the xvfb,export DISPLAY=localhost:1.0,another error occurs when the code call glCreateShader:"X Error of failed request: BadRequest (invalid request code or no such operation)". I have little experience with OpenGL issues over remote connections.My glxinfo is: display: localhost:1 screen: 0 direct rendering: No (If you want to find out why, try setting LIBGL_DEBUG=verbose) server glx vendor string: SGI server glx version string: 1.4 OpenGL vendor string: Mesa Project OpenGL renderer string: Software Rasterizer OpenGL version string: 1.4 (2.1 Mesa 7.11) Can you give me some help?Thank you!

transitive-bullshit commented 6 years ago

It definitely seems that OpenGL is not initializing properly.

How are you running xvfb? Try the following (from this tutorial):

Xvfb :99 &
export DISPLAY=:99

This thread may also be useful: https://github.com/transitive-bullshit/ffmpeg-gl-transition/issues/5

willyangyang commented 6 years ago

when I print "Xvfb :99 &",I got "expected keysym, got XF86TouchpadOn: line 120 of inet expected keysym, got XF86TouchpadOff: line 121 of inet".Next "export DISPLAY=:99",everything seems fine.However,I got the same error:"X Error of failed request: BadRequest (invalid request code or no such operation)".I debug the code and find the glCreateShader crashing. I suspect the reason is because I remotely login server.My glxinfo is: name of display: :99.0 display: :99 screen: 0 direct rendering: No (If you want to find out why, try setting LIBGL_DEBUG=verbose) server glx vendor string: SGI server glx version string: 1.4 server glx extensions: client glx vendor string: NVIDIA Corporation client glx version string: 1.4 client glx extensions: GLX version: 1.4 GLX extensions: OpenGL vendor string: Mesa Project OpenGL renderer string: Software Rasterizer OpenGL version string: 1.4 (2.1 Mesa 7.11) OpenGL extensions:

Is the version mismatch caused by the error?

transitive-bullshit commented 6 years ago

I'm really not sure the details of your setup, but if xvfb is throwing an error, then any opengl code won't work. I would suggest asking your question on Stackoverflow or Superuser, as it is likely unrelated to this library itself.