The VideoLAN Forums

Hi,

I noticed that vlc use the zlib library. Is that a method to gzip compress data with zlib through vlc_object in LUA scripis?
If not what would be the most portable way to achieve that in a script?

I intend to use this function for the extension VLsub.

Many thanks,

Why do you need that?

I'd like to offer the possibility to upload data to a website. The website require the data to be gzipped + base64 encoded. Base64 encode is easy with LUA. For the deflate algorithm, I could use a library like "lua-zlib" but I'd rather not because that means compile it under each OS (it seems LUA doesn't provide a way to directly use C-based .so/.dll).
So if by chance there's a way to do this with vlc out of the box that would be really great.

Thanks,

Weird website.

Well, it use XML-RPC protocol so binary/zipped data needs to be base64-encoded. And gzip encoding is used to speed up data transfer. It seems this format is pretty common with this protocol.

And beyond the weirdness, any idea to gzip data in LUA, pretty please, anybody?

we need to export the function.

That's would be nice!

I took a quick look at the code, the function does exist here:
https://www.videolan.org/developers/vlc ... ip/ioapi.c

Somethind else; I suppose it would not be possible to do something like this:
os.execute("cvlc -vvv file:////home/vlc/dummy_file.txt --sout #std{access=file,mux=zip,dts=OUTPUT}'")

I know this doesn't work, but I mean use Vlc from command line through LUA with the dummy interface to zip the stream. It might do the trick until a later release with a proper stream function.