libcimbar Fail to encode file in web app

It's ok to encode a 2MB file, but when uploading a 30MB file -->

Jan 27 '25 09:01 freejool

Unfortunately we need a block of contiguous memory, and sometimes the OS/browser doesn't want to do that (sometimes?) when the size is large enough.

Not sure what a good solution is (it'll become more important if/when I'm able to increase the transfer speed)

Jan 28 '25 04:01 sz3

Figuring out how much is the usual max size and how to increase that restriction may be helpful.

Jan 28 '25 04:01 freejool

#96, #132 also describe this same problem.

I do think we can do better with memory usage during encoding. I'm not sure how many of these errors it'll solve, but I'm looking into it. (basically: the encoder C api needs to accept the input file in multiple chunks -- we'll still store the compressed file in contiguous memory, but that might be enough to get things under control)

Aug 15 '25 00:08 sz3

So with https://github.com/sz3/libcimbar/releases/tag/v0.6.3, this might actually work now. 🤔

Oct 17 '25 05:10 sz3

sorry for the delay ;)

In my case(Safari 26.0.1), the file size limit is still approximately 20MB. Tested with https://github.com/sz3/libcimbar/releases/download/v0.6.3/cimbar_js.html and https://cimbar.org/

Nov 04 '25 01:11 freejool

Thanks for testing this!

We might be looking at a browser-dependent soft upper limit. 🤔

(basically: we should add some better error handling to at least explain the error, but I'm not sure what else we can do about this for now)

Nov 04 '25 18:11 sz3