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Update renderer #63

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Update renderer #63

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ILW8
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@ILW8 ILW8 commented Oct 13, 2021

This pull request aims to optimize the rendering process by eliminating the
part that buffers frames generated by the workers on disk while the final video
encoder assembles them together into a video file. Instead, frame data is
passed between the workers and the renderer through IPC in-memory.


This PR is currently a work-in-progress

Although this code has been working fine for many months on a private server,
there are a couple of potential failure points to be addressed as well as an
update to the rendering progress message

…r than temporary files for communication (WIP)

(cherry picked from commit a29b296)
in case the video encoder doesn't keep up with the speed at which frame render workers render frames, it would lead to overrunning memory. this throttling ensures that there are only a couple frames kept in memory as buffer

(cherry picked from commit 6e1e47d)
temporarily re-adds `process.on` to handle single-frame renders, render_frame.js hasn't implemented using node-ipc for worker communication when rendering a single frame
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