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rochars / wavefile

Create, read and write wav files according to the specs. :star: :notes: :heart:
MIT License
229 stars 48 forks source link

mpeg and cart support? #20

Open kookster opened 4 years ago

kookster commented 4 years ago

Hello, I work in public radio here in the US, and we use 2 additional standards on top of BWF, with wav files containing MPEG data chunks, and also a cart chunk which gives additional information for broadcast scheduling and automation systems.

MPEG support (compression code 80, mext chunk, and extensions to fmt) https://tech.ebu.ch/docs/tech/tech3285s1.pdf

Cart Chunk http://www.aes.org/publications/standards/search.cfm?docID=41 (I have purchased the spec, but b/c of rights and licensing I will not post it) http://www.cartchunk.org/cc_spec.htm (most of the spec is here)

I'm interested in adding support for these, would you be open to such additions to your project? Happy to work on some PRs for these.

FWIW - I have experience implementing support for these in Ruby, https://github.com/kookster/nu_wav, and I've used that gem to parse and create such wav files in production systems, but rather than port that to js, I'd rather enhance and support your high quality work on wav files.

kookster commented 4 years ago

I have this working, but I need to add better tests and get it ready to PR, hopefully you find it interesting @rochars - hope you are safe and to hear from you soon

kookster commented 4 years ago

Ok - got things cleaned up pretty well https://github.com/rochars/wavefile/pull/22 hopefully that builds! 🤞 @rochars please let me know what you think when you have time?

rochars commented 4 years ago

Thank you very much for your work and also for sharing the solution.

Unfortunately, I am not able to work on this software at the moment - the code will remain public for anyone interested in continuing to work with this library, as well as anyone interested in developing and releasing new versions of it.

Again, thanks a lot :)