[cma-l] Chronicle ROT Logger Beta

Fri Mar 3 19:58:30 GMT 2017

Hi James,

Thank you! That's really kind of you :D

With regard to #1:

Being able to show a projected file size for a file of a given length, channel count, bitrate, etc is fairly straightforward for uncompressed files (such as WAV). The default settings (16-bit, 44.1kHz, stereo) recording for an hour will always produce a file of ~605MB. Compressed formats, however, are harder to predict given that the compression ratio overall depends on the content of the audio. Still, it shouldn't vary too much and a rough average figure should be sufficient - just not *perfectly* accurate.

See https://github.com/calmcl1/chronicle/issues/22.

#2

Not deleting archives automatically is fine (see https://github.com/calmcl1/chronicle/issues/21) if you want to manage your archives directly, but a direct upload to S3 will take a little work, as one can't *stream* directly to S3 and must instead upload short chunks. Not impossible, though :)

Unfortunately, a direct Glacier upload isn't possible as one must know the *exact* file size before starting - you'd have to wait for it to complete and then upload.

Cold-storage/nearline archiving like this would be better implemented by logging to a given directory and then running an automated hourly/overnight backup operation to Glacier. I've actually got some software for that, too, called Cupo (github.com/calmcl1/cupo-backup), but that's still quite beta (though we do use it for our Myriad database backups at HCR).

Does this help, or have I missed the point entirely?

Cal

m: 07426 437449 e: mail at callum-mclean.co.uk w: callum-mclean.co.uk

---- On Fri, 03 Mar 2017 08:08:00 +0000 James Cridland &lt;james at cridland.net&gt; wrote ----

This is nice - have tweeted it and it'll be in my newsletter.

Suggestion #1 is to make it clear how much space this will take on a local drive.

Suggestion #2 is to archive to Amazon S3 or similar (or point to a cron job that will do this for you). Please don't delete archives - instead, Amazon Glacier will be a really cheap place to store every single second of your radio station that was ever broadcast. Imagine how awesome that would be.

J

On Thu., 2 Mar. 2017, 19:19 Canalside's The Thread, &lt;office at thethread.org.uk&gt; wrote:

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I’ll get our tekky guys Simon and Blackers onto this Cal …… might be worth a dabble and a play. I think they’ve got bored of our Train set now and need a new Toy to tinker with        J        LOL

Nick H Dumpty / Head Bottle Washer

Canalside Calamity Radio

From: cma-l-bounces at mailman.commedia.org.uk [mailto:cma-l-bounces at mailman.commedia.org.uk] On Behalf Of Cal McLean
Sent: 01 March 2017 22:55

To: The Community Media Association Discussion List &lt;cma-l at mailman.commedia.org.uk&gt;
Subject: [cma-l] Chronicle ROT Logger Beta

Hi all,

Forgive the shameless-self-promotion post - I was wondering if anyone in the CMA might be willing to try out a bit of software that's currently in beta (though stable enough for production use)?

As part of Halton Community Radio's upgrade, I ended up writing an ROT logger, since none of the options available to use particularly seemed to be good value for what we needed. It's now running on a hand-built computer in our production environment!

However, I always feel with the bits of software that I write that if they can be useful to me, perhaps they can be useful to other people. If anybody might want to play-test a bit of logging software, it's available at:

https://calmcl1.github.io/projects/chronicle

The link above has much more information about the state of the software, how it came about and what I'm intending to do with it. It's all open source on GitHub, so developer types are free to modify and play as they wish :)

Cal McLean
Head Technician
Halton Community Radio

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