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eGamer

OpenGL Video file

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eGamer    101
Hi there, i want to take series of openGL frame buffers and compress them to video file like (avi, ogg, etc...). any help please ?

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Prune    224
Copy the frames to a PBO and then glReadPixels() (don't read from the main framebuffer as that will block rendering to it; using a PBO makes this process asynchronous). Use ffmpeg to encode the frames.

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Prune    224
Well, you could bind it to a texture (as opposed to a renderbuffer) FBO and then glGetTexImage(), but I would try both methods to see which is actually faster.

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eGamer    101
i know how to get the frames and store them in array.
my main problem is How can i compress a group of frames to a video file format ?

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zaneski13    104
You could try this http://nehe.gamedev.net/data/lessons/lesson.asp?lesson=35 but I've heard people complaining about some of NEHE tutorials. Some might have memory leaks, not sure about this one though. This also might do http://libmpeg2.sourceforge.net/ I haven't looked at it though so I can't say for sure

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Prune    224
Quote:
Original post by eGamer
my main problem is How can i compress a group of frames to a video file format

Dude, I told you, use ffmpeg. It probably covers at least 90% of existing video formats and its component libavcodec is the most widely used encoder/decoder library out there.

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eGamer    101
Quote:
Original post by Prune
Quote:
Original post by eGamer
my main problem is How can i compress a group of frames to a video file format

Dude, I told you, use ffmpeg. It probably covers at least 90% of existing video formats and its component libavcodec is the most widely used encoder/decoder library out there.


Can you please give me the link to download(ffmpeg) their source files or lib files ?

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