Creating a COG in place rather than generating a new file?

[rowanwins]

Thanks for making and sharing rio-cogeo - it is so good!

How feasible would it be possible to convert an existing file into a COG in place, rather than generating a new output file? Would it be possible if an existing GeoTIFF met a minimum set of requirements?

Cheers
Rowan

[vincentsarago]

@rowanwins 🙏 👋

My understanding is that is not possible because each time we have to perform a full read/write of the file.

Because we put the new COG in memory or in a tmp file before writing you should still be able to use the output file to be your input file, but I don't think that's what you were looking for