Recommend way to write module to do expensive job

[hungnv at opensource.com.vn]

Hello, 

We are about to write a module that’s similar to image filter module, the difference is image filter module processes JPEG, PNG… format, we work on video file, so it’s much bigger and video processing is too much longer. 

As in nginx mp4 module ( we use h264) too, client just need to receive moov atom data to start playback, my module should be able to produce moov atom and send those bytes to client while processing other part of video file. Maybe I ask is there any recommend way to do this? 

Thanks.

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Hưng
Email: hungnv at opensource.com.vn